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Full text of "Climate of Illinois : summary and analysis of long-time weather records"

II B RAR.Y 

OF THL 

U N I VERSITY 
OF ILLINOIS 



A6RICULTUK 



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UNIVERSITY OF ILLINOIS LIBRARY AT URBANA-CHAMPAIGN 



OCT l|41994 




L161 0-1096 



12,0502-4940343 
3,7002-4940688 



CLIMATE OF ILLINOIS 

Summary and analysis of long-time 
weather records 



By JOHN L. PAGE 

Associate Professor of Geography 

College of Liberal Arts and Sciences 

University of Illinois 



Bulletin 532 UNIVERSITY OF ILLINOIS 

Agricultural Experiment Station Urbana, April, 1949 



FOREWORD 

THE NEED for revising or rewriting Experiment Station 
Bulletin 208, CLIMATE OF ILLINOIS, published in 1918, 
has been felt keenly for a number of years. It was during a 
conference in 1942 with Professor W. L. Burlison, Head of the 
Department of Agronomy, and other members of his staff, that 
the author agreed to undertake the work. Compilation of 
Appendix C (Precipitation During Growing Season) was begun 
almost immediately, but the work was soon interrupted by the 
pressure of the war years and had to be put aside until the 
fall of 1944. 

In preparing a bulletin such as this, one must of necessity 
obtain data from sources other than his own. Most of the data 
in this bulletin were obtained from the U. S. Weather Bureau. 
Acknowledgment is made to E. W. Holcomb, Chief Meteorologist 
at Springfield, for resolving certain discrepancies which ap- 
peared in the published data of the Weather Bureau; to Corporal 
(now civilian) Leon T. Stewart of Chanute Field for the data 
on which Figs. 2, 3, 4, and 5 are based; to Miss Marjorie Pryor 
for her painstaking care in compiling some of the data in 
Appendix C; and to my wife, Jesza Page, for valued assistance 
in checking data. 

THE AUTHOR 



CONTENTS 

Page 

INTRODUCTION 97 

CONTROLS OF CLIMATE 99 

Latitude 99 

Continental Location 1 00 

Winds 1 00 

Storms and Air Masses 1 00 

Collective Effect of Controls 1 09 

TEMPERATURE 1 09 

Average Monthly Temperatures 113 

Geographical variations 114 

Yearly variations 1 20 

Absolute Highest and Absolute Lowest Temperatures 122 

Differences in Averages Compared With Differences in Extremes. .123 

Temperature Has Fluctuated But Hasn't Changed 123 

Frost and Growing Season 126 

PRECIPITATION 1 29 

Amount of Precipitation 130 

Distribution Thruout the Year 131 

Wettest months 139 

Driest months of growing season 139 

Dependability of Precipitation 1 39 

Driest and wettest years 1 40 

Wet and dry growing seasons 141 

No long-time change in amount of precipitation 142 

Snowfall 145 

APPENDIX A: Detailed Temperature Data 149 

APPENDIX B: Monthly and Annual Precipitation 199 

APPENDIX C: Precipitation During Growing Season 295 

LIST OF TABLES, MAPS, AND GRAPHS 364 



96 



CLIMATE OF ILLINOIS 

TEMPERATURE, pressure, winds, and moisture of the 
atmosphere all go together to make up climate. Of these 
four elements, temperature and moisture, or precipitation, 
are the most important. For this reason, and for the further 
reason that there is more information about them, they receive 
practically all the attention in this bulletin. 

An effort has been made to bring together in table form more 
data on the temperature and precipitation of Illinois than has 
previously appeared in one publication. Supplementing the 
tables are maps and graphs showing both seasonal and geograph- 
ical distribution of these two elements. 

Since temperature and moisture, as well as winds and pres- 
sure, can vary widely from time to time, records extending over 
a number of years are necessary for an accurate description of 
the climate at any given place. A period somewhat better than 
thirty years is desirable in a middle-latitude, continental area like 
Illinois. Within that length of time, most extremes of weather 
are likely to occur, if not repeat themselves. Many stations in 
Illinois have kept records of temperature and precipitation for 
more than thirty years; some records go back nearly a hundred 
years. Data from all these long-record stations have been used 
in preparing this bulletin. 

In addition to the long records, data from a number of short- 
record stations and from a few stations just outside the state 
have been used to fill out the description of Illinois climate. 
Each record, while portraying conditions at only one place, may, 
of course, be considered roughly representative of the surround- 
ing area. Used together, the records show seasonal and yearly 
variations in all parts of the state, and point up the diversity in 
climate which would naturally be expected in Illinois, with its 
area of 56,663 square miles, its north-south length of about 385 
miles, and its maximum width of about 215 miles. 

Much more can be said about the climate of Illinois than is 
said in this bulletin. To treat all phases of the subject or to 

97 



98 



BULLETIN NO. 532 



[April, 






IDENTIFICATION 
MAP 




Stations from which data were obtained. In addition to all long-record sta- 
tions still operating in Illinois, some short-record stations were included because 
of topography or distance from other stations. Data from some stations outside 
Illinois were used if location of the station or length of observation made the 
records helpful. U. S. Weather Bureau climatological divisions of the state are 
also shown. (Fig. 1) 



1949] CLIMATE OF ILLINOIS 99 

touch upon all possible effects of climate on man and his activi- 
ties would require a publication much beyond the scope of this 
one. It is hoped, however, that in the future more detailed 
studies will grow out of the data presented here. 

CONTROLS OF CLIMATE 

In Illinois four principal controls are responsible for varia- 
tions in weather. They are (1) latitude or sun, (2) continental 
location, (3) winds, and (4) storms and their associated air 
masses. Altho winds are considered a part, or element, of climate, 
they also have an important effect on temperature and moisture 
and thus are often more important as a control than as an 
element. 

Latitude 

The difference in latitude between northern and southern 
Illinois is reflected in differences in length of day and in the 
sun's position. At East Dubuque or South Beloit, in the extreme 
northern part of the state, the longest day is about 15 hours and 
15 minutes. At Cairo, at the southern tip of the state, the 
longest day is about 14 hours and 40 minutes. The shortest day 
is about 9 hours and 1 minute in the extreme north and 9 hours 
and 38 minutes in the extreme south. 

At noon suntime on June 21, normally the longest day in the 
year, the sun lacks 19 degrees of shining vertically at East 
Dubuque or South Beloit and 13% degrees at Cairo. On De- 
cember 22, generally the shortest day in the year, the noon sun 
at these places lacks 66 and 60% degrees respectively, of being 
directly overhead. 

On March 21 and September 22 the days and nights are of 
equal length thruout the state, but the noon sun is 5% degrees 
more direct at Cairo than at East Dubuque or South Beloit. It 
lacks 42% degrees of being vertical in the extreme north, and 
37 degrees in the extreme south. 

The variations in length of day and directness of the sun's 
rays play a rather prominent role in temperature differences 
between summer and winter, and to some extent between 
northern and southern Illinois during both seasons. The lati- 



100 BULLETIN NO. 532 [April, 

tudinal location and extent of the state has a further important, 
tho indirect, effect on climate by determining the relation of the 
state to the paths of cyclonic storms. The effects of these storms, 
which cause masses of strikingly different air to invade the state 
from all directions, are discussed below. 

Continental Location 

The continental location of Illinois, together with the lati- 
tude, makes for hot summers and cool to cold winters. The 
severity of the winters is more peculiar to the area than is the 
summer heat. Hot summers occur both north and south of Illi- 
nois, but the winters are far less severe to the south than in this 
state. Continental location also assures that January will nor- 
mally be the coldest month and July the hottest, altho this is 
not true every year. 

Lake Michigan tempers the climate slightly, but its influence 
is often overemphasized. A body of water no larger than Lake 
Michigan can influence the temperature, at most, only a few 
miles away. However, the temperature of the water, which is 
warmer than the surrounding land in autumn and cooler in 
spring, does affect the paths taken by cyclonic storms when 
crossing the area of the Great Lakes. 

Winds 

Winds of Illinois come mostly from the southwest, west, and 
northwest, with southwest winds somewhat more common in 
the summer, and northwest in winter. A change in the direction 
of the wind will almost immediately affect the temperature as 
well as the moisture condition of the air. These effects of the 
wind are due to characteristics acquired at its place of origin, or 
to modifications resulting when the wind passes over different 
areas. 

Storms and Air Masses 

During much of the year cyclonic storms exercise the dom- 
inant control over the climate of Illinois. It is the inter- 
change of air masses, associated with fronts of cyclonic storms, 
that gives the weather of Illinois its great variety. 



1949] CLIMATE OF ILLINOIS 101 

A study of almost any daily weather map will show the rela- 
tion of weather to cyclonic storms, with their associated fronts 
and air masses. Figs. 2, 3, 4, and 5 (pages 102 to 106) are similar 
to the daily maps put out by the United States Weather Bureau, 
but because of their scale are necessarily somewhat more simpli- 
fied. These particular maps were selected because they show cer- 
tain types of weather for the Middle West in general and for 
Illinois in particular. 

Fig. 2 shows the contrasts in weather which a cyclonic storm, 
with its associated fronts and air masses, may produce within 
the state. At this time (May 8, 1943) southern Illinois was hav- 
ing southerly winds, generally clear skies, and temperatures in 
the high sixties, while the central and northern parts of the state 
were having northeasterly winds, cloudy skies, steady rain, and 
temperatures in the forties and fifties. The precipitation was 
caused by the fact that the warm maritime (mTw) air was 
meeting the cooler (mPk) air at the warm front and was being 
forced to rise over it. This happened much as tho central and 
northern Illinois were a mountain with a very gentle slope to- 
ward the south and with the wind blowing up over it. 

This and somewhat similar situations (long, low pressure 
troughs extending from northeast to southwest, with cooler air 
to the north and warmer air to the south) are common during 
most of the cool periods of the year. They give Illinois its long- 
drawn-out cloudy and rainy spells, perhaps more characteristic 
of spring than of any other season. Sometimes the warm fronts 
may become stationary for two or three days, causing almost 
steady precipitation. This happened in central Illinois in May, 
1943. 

Had the low pressure trough been along the Ohio river, 
southern and central Illinois, instead of central and northern 
Illinois, would have been getting the rain, and northern Illinois 
would have been having weather somewhat similar to that pre- 
vailing in central Wisconsin. 

Fig. 3 shows pressure, wind direction, and air-mass condi- 
tions producing hot, muggy weather in the eastern, central, and 
southern parts of the United States. Temperatures at this time 
(August 13, 1944) were in the nineties thruout much of these 



102 



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1949] CLIMATE OF ILLINOIS 107 

sections of the country. In Illinois, such temperatures had pre- 
vailed in the afternoons since August 9. While variations from 
this general weather setup may produce hot spells in Illinois, 
the variations are, for the most part, in degree rather than 
in kind. 

As can be seen from this map, there was cooler weather, gen- 
erally in the seventies and eighties, in Minnesota and the 
Dakotas. The air mass (mPk) producing these lower tempera- 
tures, had its origin over the north Pacific ocean and was moving 
from northwest to southeast. It reached northern Illinois on 
August 16 and southern Illinois on August 17, giving the state a 
few days of respite from the heat. The decrease in temperature 
was associated with general rains thruout Illinois on those two 
days, varying in amount from .05 inch at Fairfield and Salem to 
4.35 inches at La Harpe. 

Fig. 4 shows conditions typical of "Indian summer." Note 
that there was very little cloudiness and no precipitation within 
the United States and that there were several degrees' difference 
between temperature and dew point of the air. Days were warm 
and nights were cool. The "Indian summer" weather shown on 
this map had begun on October 16 and lasted thru October 20. 
This kind of weather occurs frequently enough in the autumn 
to be characteristic of Illinois climate. 

The cool air mass (cP) which produced this weather prob- 
ably had its origin in Alaska or northern Canada. It moved 
south over the Great Plains of Canada and the United States, 
circulating around a high pressure center or cell, and then, be- 
fore moving out over the Gulf of Mexico, swung back toward 
the northeast after having been warmed somewhat over the 
southern part of the country. 

Fig. 5 shows how suddenly the wind direction may change 
and how markedly different the temperatures may be within 
short horizontal distances when different air masses are sepa- 
rated by a cold front. 

For example, Chanute Field, with its maritime tropical air 
mass (mTk) from the Gulf of Mexico, had a temperature of 69 
and a dew point of 58 on this day (November 8, 1945) ; Peoria 
with its continental polar air mass (cPk) had a temperature of 



108 BULLETIN NO. 532 [April, 

41 and a dew point of 36. Temperature differences of about 
equal proportion occurred on the two sides of the cold front thru- 
out most of its extent. While this map sho'ws the conditions at 
6:30 p. m., temperatures thruout the state decreased as the cold 
front moved eastward into Indiana. On the night of November 
10 the temperature had dropped to the twenties in northern 
Illinois, to the thirties in central Illinois, and to the high thirties 
and low forties in southern Illinois. 

The storm center was too far north to cause much precipi- 
tation, except in the extreme north-central part of the United 
States and the south-central part of Canada. However, a few 
showers and thundershowers did occur along the cold front. These 
were caused by the cold air pushing in under the warm air and 
forcing it to rise rapidly. Such invasions of cold polar air, pro- 
ducing sharp drops in temperature, occasional thunderstorms, 
and, less often, tornadoes, are by no means rare in the central 
part of the United States, especially from late October thru 
April and sometimes May. Often the contrasts in weather are 
more striking than those shown on this map. In January a setup 
of this kind might easily cause the temperature to drop more 
than 40 degrees within a 24-hour period. This happened in much 
of Illinois from January 21 to 22, 1936. However, the lowest 
temperature does not occur immediately when the cold air comes 
in, but many hours later, after heat has been radiated upward 
thru the air. 

The types of weather shown on these four maps are char- 
acteristic of but not peculiar to Illinois. Many variations from 
these maps might be shown, but these indicate the important 
day-to-day effects of cyclonic storms and their associated air 
masses and fronts on Illinois weather. These effects are more 
pronounced during the cooler half of the year than during the 
warm months, because of the greater differences existing be- 
tween Canada and the southern United States in temperature 
and moisture conditions. 

Weather and in time, therefore, climate are affected by 
thunderstorms which may or may not be associated with fronts. 
Tropical hurricanes also at times affect Illinois weather, but 
indirectly rather than directly. 



1949] CLIMATE OF ILLINOIS 109 

Collective Effect of Controls 

When all these controls latitude, continental location, 
wind, and storms and their associated air masses are consid- 
ered collectively, Illinois has, on the average, hot summers, cool 
to cold winters, and rather abundant precipitation thruout the 
year with a rather high degree of reliability from year to year. 
The average, however, is made up of pronounced day-to-day 
differences in degree of temperature, wind direction and velocity, 
moisture conditions of the atmosphere, and precipitation. 

TEMPERATURE 

Any standard temperature reading represents the condition 
in an instrument shelter at a level of about 5% feet above the 
ground or above the roof of a building. The thermometer is so 
situated that it receives freely circulating wind regardless of the 
direction from which it comes. The position of the thermometer 
in the shelter, however, largely eliminates the effects of direct and 
reflected sunshine. This is why the official temperature is gen- 
erally different from the readings seen on some thermometers 
on the fronts of stores or incorrectly exposed at homes. 

Temperature averages are used more often than extremes in 
this bulletin. (Sometimes the term mean or normal is used inter- 
changeably with average.) Average temperatures are, for the 
most part, arrived at in the following way : The average temper- 
ature for January 1, 1940, for example, is the highest plus the 
lowest for that day divided by two. The average for the month 
of January, 1940, is the sum of the daily averages divided by 31, 
the number of days in the month. An average temperature for 
January over a period of years is obtained by averaging the 
averages of the Januarys in those years. The average for any 
other month is obtained in the same way. Naturally, the longer 
the period of observation, the nearer the true average will be 
approached. 

To obtain the average maximum temperature for January, 
1940, the highest temperatures for all the days in the month are 
added and then divided by 31. The average January maximum for 
a number of years is the average of the average maximum tern- 



110 



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112 



BULLETIN NO. 532 



[April, 




Average temperatures, average extremes, and extremes for each month at 
seven long-record stations ( F.). Highest and lowest temperatures each month 
are the extremes regardless of year; average of highest and average of lowest are 
averages of monthly extremes for all years; average maximum and average min- 
imum for each month are the averages of daily extremes for all years. (Fig. 6) 



1949] CLIMATE OF ILLINOIS 113 

peratures for the Januarys of those years. Average minimum 
temperature is arrived at in the same way. 

The average of the highest is used in a different sense than 
the average maximum. To get the average of the highest tem- 
perature for January over a number of years, only the one high- 
est temperature recorded in each January is used, and these 
temperatures are averaged. The average of the lowest is obtained 
in the same manner. 

Table 1 gives the long-time average temperature for each 
month, and also the annual average, at sixty-four stations in 
Illinois and adjoining states. Data from Beloit, Wisconsin; 
Davenport, Dubuque, and Keokuk, Iowa; Louisiana and St. 
Louis, Missouri; and Paducah, Kentucky, are included since 
no satisfactory records are available for nearby points in Illinois. 

In Appendix A (Tables 4 thru 8) more detailed data are 
given for seven long-record stations, including Dubuque and 
St. Louis. In Table 4 average temperatures are given for each 
month of each year and also for each year that records have been 
kept at the station. Table 5 gives the average maximum temper- 
atures month by month for each year and also year by year; 
Table 6, average minimum temperatures; Table 7, absolute 
highest temperatures; and Table 8, absolute lowest tempera- 
tures. Long-time averages of these data are also given for each 
month. (These tables will be found on pages 150 to 197.) 

Fig. 6 presents graphically the highlights of the material 
given in Appendix A. Month-to-month differences in average 
temperature may be seen at a glance, as well as the changes, 
from month to month, in average maximum and average mini- 
mum temperatures; in absolute highest and absolute lowest 
temperatures ; and in the averages of the absolute highest and of 
the absolute lowest. 

Average Monthly Temperatures 

The month-to-month march of average temperatures is simi- 
lar thruout Illinois (Fig. 6). January and February are not 
markedly different from each other, but from February to March 
there is a marked increase. Until June, temperatures then con- 
tinue to rise rapidly from one month to the next. During the 



114 BULLETIN NO. 532 [April, 

summer months the changes are slight, altho July, on the aver- 
age, is the warmest month. Temperatures take a sudden dip 
from August to September; and decided month-to-month de- 
creases continue until December, the average for December be- 
ing slightly higher than that for January. 

Altho seasonal changes follow approximately the same pat- 
tern thruout the state, the rate of change varies with geograph- 
ical location. In any one year, also, month-to-month changes in 
temperature may vary considerably from the long-time pattern. 

Geographical variations. Every month average tempera- 
tures decrease, in general, from south to north, but the rate of 
decrease varies markedly from month to month. This is shown 
in Figs. 7 to 18. The general east-to-west trend of the isotherms 
(lines of equal temperature) on these maps indicates that lati- 
tudinal extent is the most important cause of the geographical 
variations. That many of the isotherms run from northwest to 
southeast, rather than due east and west, reflects the operation 
of Hopkins' Bio-Climatic Law (page 127). At times, however, 
winds, storms, and air masses skew some of the isotherms so that 
they follow a northeast-southwest direction. The almost north- 
to-south direction of the isotherms around Lake Michigan in 
some months reflects the influence of the lake. This influence is, 
however, less direct than indirect. The lake has an effect on the 
paths of cyclonic storms but does not in itself affect land tem- 
peratures more than a few miles away. 

In central and northern Illinois the isotherms are slightly 
northeast to southwest in December, January, and February 
(Figs. 7, 8, and 9), but are more directly east to west in March 
(Fig. 10). From April thru August (Figs. 11 to 15) the iso- 
therms are somewhat northwest to southeast in almost all parts 
of the state. In September (Fig. 16) they are again more east to 
west except along Lake Michigan, where the direction is almost 
north and south. By October (Fig. 17) in the northeastern part 
of the state, the isotherms again have a northeast-southwest 
trend, which is even more pronounced in November (Fig. 18). 

The difference in average temperature between northern and 
southern Illinois is greater in winter than in summer. During 
January (normally the coldest month) Cairo averages 36.2, 



1949] 



CLIMATE OF ILLINOIS 



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BULLETIN NO. 532 



[April, 








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CLIMATE OF ILLINOIS 



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BULLETIN NO. 532 



[April, 






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1949] CLIMATE OF ILLINOIS 119 

and Paducah, Kentucky, 37. Dubuque, Iowa, and Freeport 
report average January temperatures of 19.6 and 19.7, re- 
spectively. Most of this difference results directly from the 
latitudinal extent of the state. Latitude has an indirect effect 
also; for northern Illinois gets more cold air masses from Can- 
ada than does the southern part of the state, while the region 
around Cairo gets more air masses from the Gulf of Mexico. 

The range between the north and the south is pretty much 
the same during the other two winter months as in January. At 
all four stations (Freeport, Dubuque, Cairo, and Paducah) Feb- 
ruary is about 2 l /2 degrees warmer than January. December 
is about 1 degree warmer than February at Dubuque and Free- 
port, and is about the same as February in Cairo and Paducah. 

The greatest temperature difference in July (usually the 
hottest month) is not between the extreme south and the north, 
but between Quincy, with an average temperature of 80.2, and 
Waukegan, with an average temperature of 72.3. As has already 
been noted, the isotherms at this time have a general north west- 
to-southeast trend, and Quincy gets some of the highest temper- 
atures in the state. The difference between Waukegan and 
Quincy is due primarily to the fact that the conditions at Wau- 
kegan are partially lake-controlled, whereas the conditions at 
Quincy are entirely land-controlled. 

Since the difference in temperature between the north and 
the south is smaller in summer than in winter, it follows that 
spring temperatures rise faster in the north. The rate of change 
in the different parts of the state may be seen by comparing 
Figs. 9 thru 12. In March the temperatures begin to rise rapidly 
all thru the state, but more rapidly in the north than in the 
south. Temperatures in southern Illinois are almost 10 degrees 
higher in March than in February, while in northern Illinois 
March is approximately 12 degrees warmer than February. From 
March to April a 10-degree increase occurs in southern Illinois 
and a 10- to 14-degree increase in northern Illinois. From April 
to May the average increase is 8 to 10 degrees in the south and 
10 to 12 degrees in the north. The more rapid increase from 
month to month in northern Illinois than in southern Illinois 
results mostly from the difference in latitude. The farther away 



120 BULLETIN NO. 532 [April, 

an area is from the equator, the more rapidly the days lengthen. 
Also the air is somewhat drier in the northern part, making for 
faster heating of the ground and of the air. 

From May to June there is an increase of about 10 degrees 
in the north and 8 to 10 degrees in the south, while from June 
to July the increase is about 4 to 6 degrees in the north and 
2 to 4 degrees in the south. From July to August there is about a 
2-degree decrease thruout the state, the decrease being least in 
the southeastern part. 

With the coming of autumn, temperatures drop sharply in all 
parts of the state, but somewhat more sharply in the north than 
in the south. From August to September the decrease is from 
6 to 8 degrees, with a slightly smaller decrease near Lake Mich- 
igan. From September to October the temperature drops 10 to 
12 degrees thru most of the state and about 10 degrees in the 
extreme south, while from October to November all parts of the 
state experience a 10- to 14-degree drop. From November to 
December the decrease is about 12 degrees in the north and 8 to 
10 degrees in the south. The decrease thruout the state con- 
tinues on to January. 

Northern Illinois, with monthly average temperatures in the 
summer almost as high as those in the south, but with winter 
temperatures considerably lower, has a greater annual range in 
temperature than does southern Illinois. Also, temperature 
ranges are slightly greater in the western part of the state than 
in the eastern part. 

For a more detailed picture of actual temperatures of the 
state see Table 1 (page 110) and Appendix A (pages 149 to 197). 

Yearly variations. Since Illinois climate is characteristically 
continental, July, on the average, is the warmest month, and 
January is the coldest (Table 1). During some years, however, 
June or August, or both, may be warmer than July. Likewise, 
December or February may sometimes be colder than January 
(Table 4, Appendix A, pages 150 to 159). 

Of a total of 535 Julys recorded at seven different stations 
(Table 4, Appendix A), only ten Julys had average temperatures 
the same as the long-time average. Of 530 Januarys, only three 



1949] CLIMATE OF ILLINOIS 121 

were at the long-time average. This shows how seldom the 
monthly average in any year coincides with the average taken 
over a period of years. 

According to the data for the seven stations, a few more 
Julys have been cooler than average than have been warmer 
than average. The coldest July for the state as a whole was 1891, 
when the temperature at the seven stations averaged 70.9 V 
August was also cool that year, July and August combined being 
the coolest on record at most stations having records dating back 
that far. In the northern part of the state, July, 1915, was also 
cool. 

At almost all stations in Illinois, July, 1936, was the warmest 
month on record. With average temperatures in the middle 
eighties, the state as a whole was 7.1 degrees above normal. 
Quincy, with an average temperature of 88.0, was the warmest 
spot in the state. In commenting upon July, 1936, the U. S. 
Weather Bureau had this to say : 

This month was warmer than any month in the climatological history of 
Illinois, averaging 1.3 higher than July, 1901, and 2.0 above July, 1934. 
Temperature in the northern division averaged 0.4 higher than any previous 
month of record, the central 2.1 higher, and the southern 0.4 higher. 
Nearly all stations set new absolute maximum temperature records, excepting 
the extreme south, the extreme west-central, and along Lake Michigan, 
and the highest temperature ever recorded in the State, 115, was equalled. 
The heat wave began on the 4th and did not definitely end until the 29th, 
maxima daily equalling or exceeding 100 at most of the stations from the 
4th to the 17th, and a number of stations had readings of 110 or slightly 
above on two to four successive days; this consituted by far the most per- 
sistent and severe heat wave ever officially recorded for the State as a whole. 2 

The coldest months on record for representative sections of 
the state have been January, 1912, with an average temperature 
of 10.5, and January, 1918, with 11.5 for Chicago; January, 
1912, with 3.8 and February, 1875, with 5.5 for Dubuque; 
January, 1918, with 10.4 and January, 1912, with 11.0 for 
Peoria; January, 1918, with 13.6 and January, 1940, with 14.5 

1 That the temperatures at these seven stations are representative of the 
state as a whole is indicated by the fact that the July average for all sixty-four 
stations for all years of records (thru 1944) was 76.6, while the average for all 
the Julys on record at the seven stations was 76.5. 

2 U. S. Department of Agriculture, Weather Bureau. Climatological Data, 
Illinois Section. July, 1936. p. 25. 



122 BULLETIN NO. 532 [April, 

for Springfield; January, 1918, with 11.6 and January, 1912, 
with 13.8 for Urbana; January, 1918, with 21.0, and January, 
1940, with 22.0, for Cairo; January, 1940, with 17.2, and Jan- 
uary, 1918, with 18.8, for St. Louis. In general, the Januarys of 
1912, 1918, and 1940 have been the state's coldest months (see 
Appendix A, Table 4). Noticeably warmer-than-average Janu- 
arys occurred in 1880 and 1933. 

Absolute Highest and Absolute Lowest 
Temperatures 

The absolute highest temperatures in July, 1936 (the warmest 
month on record) ranged from 105 at Cairo and Chicago to 
115 at Greenville, with Bloomington, Quincy, Mt. Vernon, and 
Sparta each reporting 114 as the maximum. 

The lowest temperature ever recorded in Illinois was 35 
on January 22, 1930, at Mt. Carroll. At other stations the abso- 
lute lowest temperatures have been recorded during December, 
January, and February, and during several different years. Some 
of the most severe December cold spells occurred in the following 
years: 1872, 1876, 1880, 1901, 1914, 1917, and 1924. Januarys 
that have had rather severe cold spells were in 1875, 1879, 1884, 
1888, 1894, 1912, 1918, 1924, 1930, 1936, and 1940. Februarys 
having had severe weather were: 1856, 1862, 1866, 1875, 1885, 
1886, 1888 (except in the southern part), 1893, 1895, 1899, 1903, 
1905, 1917, 1918, 1923, 1929, 1933, and 1936. 

In winter, the lowest temperatures are farther below the 
average than the highest temperatures are above the average; 
but in summer the opposite is true. Also the greatest differ- 
ences in temperature within one month have occurred in winter. 
For example, at Chicago the February difference between the 
highest and lowest temperatures has been as great as 89 degrees, 
while in July the greatest difference has been 55 degrees; at 
Peoria, the differences have been 100 degrees and 67 degrees; 
at Springfield, 102 degrees and 61 degrees; at Urbana, 95 degrees 
and 74 degrees; at Cairo, 92 degrees and 50 degrees; and at 
St. Louis, 102 degrees and 55 degrees. 



1949] CLIMATE OF ILLINOIS 123 

Differences in Averages Compared With 
Differences in Extremes 

While the difference between the absolute highest and the 
absolute lowest is greater in winter than in summer, the differ- 
ence between the average maximum and the average minimum 
is greater in summer than in winter. 

The wide variations in winter are caused primarily by cy- 
clonic storms and the invasions of warm and cold air masses for 
relatively short periods of time. Unusually warm masses of air 
from southern and southwestern United States produce the 
highest temperatures; and the cold Canadian air masses from 
the north and northwest produce the lowest temperatures. In 
summer the climate is controlled more by the sun, which ac- 
counts for the steady day-to-day differences between the highest 
and lowest temperatures. There are no marked invasions of 
cold air and relatively few warm ones to cause extremely wide 
variations. 

Temperature Has Fluctuated But Hasn't Changed 

Many people, in Illinois as elsewhere, are convinced that 
climate has changed within the 'last thirty to fifty years. The 
"old-fashioned winter," they say, is a thing of the past. Their 
assertions, however, are based on memory and not on instru- 
mental records which have been kept very faithfully for almost 
a century in this state. 

Peoria has the longest uninterrupted weather record in Illi- 
nois, from 1856 to the present. This long record has been used 
in Fig. 19 (page 124) to show five-year sliding averages of tem- 
perature for the midmonth of each of the four seasons. The five- 
year sliding (or moving) average means simply the average of 
1856 thru 1860 for the first point on the graph (1858), 1857 thru 
1861 for the second point, etc. 

Use of the sliding average makes it possible to discount the 
effects of extreme year-to-year variations without eliminating 
periodic variations. One really cold January, for example, when 
averaged in with four others of about normal temperature, will 



124 



BULLETIN NO. 532 



[April, 



. 

00 OS 
ni <-H 




h o> 



1949] CLIMATE OF ILLINOIS 125 

cause no one period to stand out as conspicuously cold, but will 
cause a period of five years to appear graphically as a bit cool. 
It takes at least two or three cold Januarys during a five-year 
period to produce a marked drop in the graph line. 

The average January temperature in Peoria is 24.3, with 
about as many periods slightly above the average as slightly 
below. Only two periods departed very widely from normal. In 
the middle 1880's several cool Januarys (1883, 1884, 1885, 1887, 
and 1888) produced the downward trend; and several warm 
Januarys (1931, 1932, 1933, and 1938) produced the upward 
curve in the 1930's. 

April, with an average temperature of 50.8, shows less 
marked fluctuations than January, with Aprils above or below 
the normal showing no relationship to January conditions. In 
other words, a period of colder-than-usual Januarys has not 
necessarily been followed by Aprils that were either warmer or 
cooler than normal. There appears to have been no long-time 
increase or decrease in temperature for this month. 

July, with an average temperature of 75.7, shows less vari- 
ation from the normal than any other month. There have been 
two periods of cool and two of warm Julys. The cool periods 
occurred in the middle 1860's (all Julys except one were below 
normal), and from 1904 to 1912, when all Julys were below 
normal. The warm periods occurred in the late 1870's and the 
middle 1930's. In both of these periods every July was warmer 
than normal. About as many years were above normal before 
1900 as have been since 1900. There appears, therefore, to have 
been no permanent increase or decrease in July temperatures 
in Peoria. 

October, with an average temperature of 53.3, likewise 
shows a fluctuation from one period of years to another, but no 
definite trend in one direction or the other. Also, the warm or 
cool October periods show no relation to cool or warm periods 
during any other month. 

In brief, when the long-time temperatures at Peoria are 
considered, both warmer-than-normal and cooler-than-normal 
periods can be found, but they do not occur at anything like 
regular intervals, nor have they been more or less pronounced 



126 



BULLETIN NO. 532 



[April, 



of late years. The same thing is true of other long-time stations 
in Illinois (Appendix A, Table 4). Many factors contribute to 
temperature, and a variation of any one may easily produce 
temperatures slightly above or below the normal. 



Frost and Growing Season 

Variations both in definition of frost and in actual occur- 
rence often make frost-distribution data more misleading than 
any other kind of climate data. Frost at some stations means the 
actual accumulation of hoar frost and at other stations a tem- 
perature of 32 in an instrument shelter a few feet above the 
ground or above the roof of a building. Moreover, there is 
perhaps no other climatic condition which varies so much locally. 
At times a valley or a low place no deeper than 5 to 30 feet may 
have a frost several days later than a nearby level place in the 

spring, and several 
days earlier in the 
autumn. There are not 
enough weather sta- 
tions in Illinois to 
present all the varia- 
tions in a region. 

Fig. 20 does show 
in a rather general 
way the varying 
length of frost-free 
periods thruout the 
state. To produce a 
"frost-free day" map 
of any great detail it 
would be necessary to 
have a network of sta- 
tions several times as 



Distribution of frost-free 
days. A general northwest- 
southeast trend is noticeable 
in the lines which divide the 
state according to number 
of frost-free days. (Fig. 20) 



I". '. | UNDER 160 
160 TO 1.70 
170 TO 180 
180 TO 190 
190 TO 200 
OVER 200 




1949] CLIMATE OF ILLINOIS 127 

dense as that in Illinois. It would also be well to have the sta- 
tions in the country rather than in cities and towns. Chicago, for 
example, has a frost-free period of 189 days. Since such a long 
period in that part of the state seems to reflect the influence of a 
city rather than conditions in general, Chicago is not indicated 
on the map. 

Hopkins' Bio-Climatic Law is reflected in the trend of the 
lines indicating the number of frost-free days in Fig. 20. Hop- 
kins' Law is that in the United States the spring advances, in 
general, from south to north at the rate of 4 days for 1 degree 
of latitude, from west to east at the rate of 4 days for 5 degrees 
of longitude, and from lowland to higher land at the rate of 4 
days for 400 feet of altitude. The northwest-to-southeast trend 
of the lines reflects both latitude and longitude, while the curves 
in the lines show the effects of altitude. However, the fact that 
air drainage often causes more frosts in low places than in sur- 
rounding level areas, at times counteracts the general trend of 
Hopkins' Law. The result is a patchiness in the distribution of 
frosts and number of frost-free days. 

Table 2 (page 128) shows the average and extreme dates of 
the earliest and latest frosts at various stations thruout the state, 
as well as the number of frost-free days. 

Disregarding Chicago, with its urban conditions, the aver- 
age date of the last killing frost of the spring in northern Illinois 
varies from April 25 at Monmouth and Pontiac (April 19 at 
Dubuque, Iowa) to May 8 at Mount Carroll. Frost has, how- 
ever, on at least one occasion, occurred as late as June 8 at both 
Mount Carroll and Freeport. At Mount Carroll the average date 
for the first killing frost in autumn is October 5. Altho this is the 
earliest average date, frost has occurred as early as August 30 at 
Freeport. Outside Chicago, the average frost-free period in 
northern Illinois ranges in length from 150 days at Mount Car- 
roll to 173 days at Aledo and Pontiac (180 days at Dubuque). 

In central Illinois the average frost-free period is from 168 
to 190 days long, extending from middle or late April to about 
the middle of October. Killing frosts have, however, occurred as 
late as the end of May and as early as mid-September. 

In southern Illinois the average frost-free period is from 185 
to 213 days long. The average date of the last killing frost in 
spring ranges from March 30 at Cairo to April 17 at Flora, 



Table 2. ILLINOIS FROST DATA: Average and Extreme Dates of 

Earliest and Latest Frosts and Length of Frost-Free Periods 

at Sixty-Five Weather Stations Thru 1944 





Length 


Average 


Average 


Latest 


Earliest 


Length of 




of 


date of 


date of 


date of 


date of 


frost-free 


Station and county 


record 


last killing 


first killing 


last killing 


first killing 


period 




(years) a 


frost in 


frost in 


frost in 


frost in 


(days) 






spring 


autumn 


spring 


autumn 




NORTHERN 


ILLINOIS 








Aledo, Mercer. 


... 44 


Apr. 26 


Oct. 16 


May 25 


Sept. 20 


173 


Aurora, Kane 


... 58 


May 4 


Oct. 10 


Mav 31 


Sept. 16 


159 


Beloit, Rock, Wis 


... 70 


Apr. 24 


Oct. 15 


May 25 


Sept. 18 


174 


Chicago, Cook 


... 74 


Apr. 15 


Oct. 21 


May 25 


Sept. 20 


189 


Davenport, Scott, la 


... 73 


Apr. 20 


Oct. 16 


May 22 


Sept. 18 


179 


Dixon, Lee 


... 52 


May 1 


Oct. 11 


May 27 


Sept. 14 


163 


Dubuque, Dubuque, la 


. .. ,71 


Apr. 19 


Oct. 16 


May 21 


Sept. 25 


180 


Freeport, Stephenson 


... 36 


May 6 


Oct. 7 


June 8 


Aug. 30 


154 


Galva, Henry 


... 52 


Apr. 29 


Oct. 14 


May 31 


Sept. 20 


168 


Henry, Marshall 


... 45 


Apr. 27 


Oct. 15 


May 25 


Sept. 14 


171 


Joliet, Will 


... 50 


May 2 


Oct. 11 


May 26 


Sept. 11 


162 


Kankakee, Kankakee 


... 28 


May 1 


Oct. 14 


May 26 


Sept. 20 


166 


Marengo, McHenry 


... 54 


May 3 


Oct. 12 


May 28 


Sept. 11 


162 


Minonk, Woodford 


... 48 


Apr. 29 


Oct. 12 


May 23 


Sept. 14 


166 


Monmouth, Warren 


... 51 


Apr. 25 


Oct. 14 


May 25 


Sept. 20 


172 


Morrison, Whiteside 


... 42 


May 1 


Oct. 12 


May 27 


Sept. 11 


164 


Mt. Carroll, Carroll 


... 47 


May 8 


Oct. 5 


June 8 


Sept. 12 


150 


Ottawa, LaSalle 


... 52 


Apr. 30 


Oct. 12 


May 26 


Sept. 14 


165 


Pontiac, Livingston 


... 42 


Apr. 25 


Oct. 15 


May 25 


Sept. 16 


173 


Rockford, Winnebago 


... 51 


May 6 


Oct. 9 


June 6 


Sept. 14 


156 


Sycamore, DeKalb 


... 48 


May 7 


Oct. 6 - 


May 27 


Sept. 11 


152 


Walnut, Bureau 


... 52 


. Apr. 28 


Oct. 13 


May 25 


Sept.*14 


168 


Waukegan, Lake 


... 22 


May 7 


Oct. 17 


May 30 


Sept. 25 


163 


CENTRAL ILLINOIS 


Bloomington, McLean 


... 48 


Apr. 27 


Oct. 16 


May 26 


Sept. 18 


172 


Carlinville, Macoupin 


... 52 


Apr. 22 


Oct. 19 


May 25 


Sept. 18 


180 


Charleston, Coles 


... 47 


Apr. 24 


Oct. 16 


May 26 


Sept. 14 


175 


Danville, Vermilion 


... 40 


Apr. 27 


Oct. 15 


May 26 


Sept. 16 


171 


Decatur, Macon , 


. .. 51 


Apr. 24 


Oct. 18 


May 25 


Sept. 16 


177 


Effingham, Effingham 


... 43 


Apr. 21 


Oct. 18 


May 25 


Sept. 16 


180 


Griggsville, Pike 


... 51 


Apr. 16 


Oct. 21 


May 25 


Sept. 25 


188 


Havana, Mason 


... 51 


Apr. 17 


Oct. 18 


May 25 


Sept. 26 


184 


Hillsboro, Montgomery 


... 48 


Apr. 21 


Oct. 20 


May 25 


Sept. 24 


182 


Hoopeston, Vermilion 


41 


Apr. 30 


Oct. 15 


May 25 


Sept. 16 


168 


Jacksonville, Morgan 


... 49 


Apr. 23 


Oct. 14 


May 25 


Sept. 16 


174 


Keokuk, Lee, Iowa , 


... 73 


Apr. 12 


Oct. 13 


May 7 


Sept. 18 


184 


La Harpe, Hancock , 


... 50 


Apr. 24 


Oct. 12 


May 25 


Sept. 13 


171 


Lincoln, Logan 


... 50 


Apr. 28 


Oct. 15 


May 26 


Sept. 18 


170 


Louisiana, Pike, Mo 


... 47 


Apr. 23 


Oct. 11 


May 25 


Sept. 13 


171 


Palestine, Crawford 


... 52 


Apr. 19 


Oct. 19 


May 25 


Sept. 19 


183 


Pana, Christian 


... 45 


Apr. 24 


Oct. 20 


May 25 


Sept. 24 


179 


Paris, Edgar , 


. .. 51 


Apr. 27 


Oct. 21 


May 26 


Sept. 24 


177 


Peoria, Peoria 


, . . . 89 


Apr. 15 


Oct. 20 


May 11 


Sept. 26 


188 


Quincy, Adams 


... 33 


Apr. 13 


Oct. 20 


May 25 


Sept. 22 


190 


Rushville, Schuyler 


... 47 


Apr. 20 


Oct. 19 


May 25 


Sept. 22 


182 


Springfield, Sangamon 


... 65 


Apr. 15 


Oct. 19 


May 25 


Sept. 25 


187 


Urbana, Champaign 


... 42 


Apr. 21 


Oct. 19 


May 25 


Sept. 16 


181 


White Hall, Greene 


. . . . 48 


Apr. 21 


Oct. 19 


May 25 


Sept. 22 


181 


SOUTHERN 


ILLINOIS 








Anna, Union 


... 48 


Apr. 9 


Oct. 26 


May 1 


Sept. 28 


200 


Cairo, Alexander 


... 74 


Mar. 30 


Oct. 29 


Apr. 30 


Sept. 30 


213 


Carbondale, Jackson 


... 35 


Apr. 13 


Oct. 23 


May 4 


Sept. 24 


193 


Du Quoin, Perry 


48 


Apr. 16 


Oct. 19 


May 25 


Sept. 24 


186 


Fairfield, Wayne 


. . . . 47 


Apr. 13 


Oct. 21 


May 7 


Sept. 19 


191 


Flora, Clay , 


... 45 


Apr. 17 


Oct. 19 


May 25 


Sept. 15 


185 


Greenville, Bond 


... 57 


Apr. 16 


Oct. 22 


May 26 


Sept. 24 


189 


Harrisburg, Saline 


... 45 


Apr. 13 


Oct. 21 


May 7 


Sept. 24 


191 


Mascoutah, St. Clair , 


, . . . 46 


Apr. 17 


Oct. 21 


May 25 


Sept. 19 


187 


McLeansboro, Hamilton. ... 


. . . . 48 


Apr. 16 


Oct. 22 


May 7 


Sept. 19 


189 


Mt. Carmel, Wabash 


. . . . 40 


Apr. 14 


Oct. 23 


May 25 


Sept. 26 


192 


Mt. Vernon, Jefferson 


. . . . 50 


Apr. 16 


Oct. 22 


May 14 


Sept. 15 


189 


New Burnside, Johnson , 


, . . . 34 


Apr. 17 


Oct. 21 


May 8 


Sept. 24 


187 


Olney, Richland 


. . . . 48 


Apr. 17 


Oct. 20 


May 25 


Sept. 18 


186 


Paducah, McCracken, Ky.. . 


. . . . 16 


Apr. 7 


Oct. 24 


Apr. 23 


Oct. 7 


200 


St. Louis (no county), Mo.. . 


, . . . 72 


Apr. 2 


Oct. 30 


May 22 


Sept. 28 


211 


Sparta, Randolph 


... 43 


Apr. 13 


Oct. 22 


May 7 


Sept. 14 


192 


Vincennes, Knox, Ind 


51 


Apr. 13 


Oct. 23 


May 25 


Sept. 23 


193 



For each station the averages are based on the number of years that records of frosts had been 
kept thru 1944. 



1949] CLIMATE OF ILLINOIS 129 

Mascoutah, New Burnside, and Olney. In autumn the average 
date of the first frost is October 19 at Flora and Du Quoin and 
October 29 at Cairo. The last frost in the spring has been as late 
as April 30 at Cairo (April 23 at Paducah, Kentucky) and 
May 26 at Greenville, while the first killing frost in the autumn 
has occurred as early as September 14 at Sparta and September 
30 at Cairo (October 7 at Paducah). 

During some years the first autumn frost may occur on the 
same day thruout the state because of an invasion of a mass of 
cold Canadian air. Similarly, in the spring a final invasion of 
cold air may cause the last frost to come at the same time all 
thru Illinois. 

PRECIPITATION 

Precipitation, as treated in this bulletin, includes rain and 
melted snow, sleet, and hail. However, snow makes up consid- 
erably less than 10 percent of the total precipitation, and the 
percentage due to sleet and hail is almost negligible. 

Precipitation results from the expansion and cooling of air 
which is forced to ascend. This is caused by (1) thermal con- 
vection (up-and-down movement of the air due to varying tem- 
perature) and (2) conflicting air masses associated with cyclonic 
storms. Precipitation caused by thermal convection usually oc- 
curs in late spring, summer, and early fall, while that due to 
conflicting air masses is commonest in the cool part of the year. 

Convection results when the surface air over a large area is 
heated to such a degree that it becomes lighter than the air 
above. The colder, heavier air above will then descend and force 
the warm surface air up, causing it to expand and cool. Convec- 
tion may also result when one area is heated more than sur- 
rounding areas. Both types of convection cause local showers, 
with a maximum of precipitation and a minimum of cloudiness. 

Cyclonic precipitation, or that caused by conflicting air 
masses (Figs. 2 and 5), often covers large continuous areas and 
is likely to produce steady precipitation lasting longer than that 
due to convection. Cyclonic precipitation is often associated with 
a complete cloud cover, which sometimes lasts for days. 

In considering the agricultural utility of a region, one is sure 
to ask three questions about precipitation : ( 1 ) How much does 



130 



BULLETIN NO. 532 



[April, 



the place receive? (2) How is the precipitation distributed thru 
the year? (3) How dependable is it from year to year? 

Amount of Precipitation 

Average annual precipitation in Illinois varies from 30.77 
inches at Morris to 47.43 inches at Anna. However, in 1945 
Carbondale had 74.50 inches and in 1887 Pontiac had only 16.15 
inches. These are the greatest and the least annual amounts on 
record in the state. 

For geographic distribution of average annual precipitation 
see Fig. 21. An interval of only 2 inches of precipitation between 
the isohyets (lines of equal rainfall), as well as differences in the 
periods of observation at the various stations, may possibly 
account for some of the minor variations in the lines. However, 
the decrease in amount of precipitation from the Ozarks north- 
ward is natural. 

In general, the 
western part of the 
Illinois Ozarks has the 
most precipitation, 
and the northern part 
of the state the least 
amount. The greater 
winter precipitation in 
southern Illinois than 
in the north is most 
responsible for the an- 
nual difference. South- 
ern Illinois has more 
cyclonic activity in 
winter than does any 
other part of the state. 
Also, its greater prox- 



Distribution of average 
annual precipitation. There 
is an irregular but definite 
decrease in precipitation 
from south to north in Illi- 
nois. (Fig. 21) 



. UNDER 34IN. 
TO 36'IN. 
To 38 'N. 
ES3 38 TO 40 IN. 
40 TO 42 IN. 
TO 44 IN. 
44 TO 46 IN 
,,.B3BOVE 46 IN. 




1949] CLIMATE OF ILLINOIS 131 

imity to the Gulf of Mexico, along with the cyclonic activity, 
makes for heavy spring rains. 

For detailed information on precipitation in Illinois see Ap- 
pendix B, Tables 9, 10, and 11, pages 199 to 294. 

Distribution Thruout the Year 

Fig. 22, page 132, shows graphically the amount of precipita- 
tion each month at fifteen representative Illinois stations. For 
monthly and seasonal distribution of precipitation thruout the 
state see Figs. 23 thru 38. These maps are based on data thru 
December 31, 1944. The conventional months of December, 
January, and February have been used for winter; March, April, 
and May, for spring; June, July, and August, for summer; and 
September, October, and November for autumn. The %-inch 
interval for isohyets on the monthly maps and the 1-inch in- 
terval used for the seasonal maps reveal minor local irregularities 
in amount of precipitation. 

The growing season (April to September) is the period of 
maximum precipitation in all of Illinois save a small area in the 
southern part (Fig. 39). Mount Carroll, with 66.9 percent of the 
precipitation during the growing season, and Cairo and Shaw- 
neetown, each with 49.2 percent, represent the extremes. 

In general, the northern part of the state gets a larger per- 
centage of its total precipitation during the growing season than 
does the southern part. This tends to make the annual precipita- 
tion in northern Illinois as effective agriculturally as the heavier 
annual amount in southern Illinois. That the total growing- 
season precipitation is much the same thruout the state is shown 
by the following data taken from six representative weather 
stations : 

Amount of precipitation Percentage of total 
during growing season precipitation during 

Station (inches) growing season 

Aledo 22.89 66.8 

Morris 19.05 61.9 

Clinton 23.77 61.1 

Roberts 20.38 61.4 

Anna 24.75 52.6 

Cairo . 20.16 49.2 



132 



BULLETIN NO. 532 



[April, 




AVERAGE 

MONTHLY 

PRECIPITATION 



Average monthly precipitation, in inches, at fifteen representative stations in 
Illinois. While total precipitation is less in northern Illinois than in the southern 
part of the state, precipitation during the growing season is about the same. 

(Fig. 22) 



1949] 



CLIMATE OF ILLINOIS 



133 






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134 



BULLETIN NO. 532 



[April, 






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1949] 



CLIMATE OF ILLINOIS 



135 






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136 



BULLETIN NO. 532 



[April, 




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1949] 



CLIMATE OF ILLINOIS 



137 









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138 



BULLETIN NO. 532 



[April, 






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1949] CLIMATE OF ILLINOIS 139 

Wettest months. At most stations in Illinois the month of 
maximum precipitation is either June, May, or March, altho at 
a few scattered points September and April have the most rain- 
fall. In southern and southeastern Illinois (Fig. 40) March is the 
wettest month, with January, April, or June as second and one 
of the other two months third. In the major portion of the state 
May is usually the wettest; June, September, or April is 
second; and one of the other two months is third. In the west- 
central and northern part June is almost without exception the 
wettest month. Either May or September is second and the other 
of these two months is third. 

Driest months of growing season. At no place in Illinois is 
either May or June the driest month of the growing season. 
Each of the other four months, however, appears as the driest 
month with varying degrees of frequency. 

At twenty-four stations on and north of a line drawn from 
Keokuk, Iowa, to Chicago, April is the driest month of the 
growing season. April is also driest, by .01 inch, at Watseka 
to the south of the line, but north of the line there are Elgin, 
Joliet, La Salle, Oregon, and Pawpaw, where July is driest. 

At six stations in and to the northwest of the Illinois river 
valley, extending from Peoria to Griggsville, August is the driest 
month of the growing season. Also August is the driest month 
in Charleston and White Hall and (by .01 inch) in Hoopeston. 
In the extreme southern part such stations as Cairo, Golconda, 
and Paducah, Kentucky, as well as Du Quoin, Flora, Salem, and 
St. Louis, Missouri, have least precipitation in September. 

July is the driest month of the growing season at the other 
fifty-four stations, as well as at the five already mentioned 
(Elgin, Joliet, La Salle, Oregon, and Pawpaw). The general dry- 
ness of this month often reduces crop yields. 

Dependability of Precipitation 

As a whole, the precipitation of Illinois is quite dependable 
from year to year. To be sure, dry periods and dry years as well 
as wet periods and wet years occur, but the departures from 
normal are neither great nor frequent for a continental climate 
like that of Illinois. 



140 BULLETIN NO. 532 [April, 

Driest and wettest years. In Appendix B (pages 199-294) 
the monthly and annual precipitation is given for 100 stations 
(90 in Illinois and 10 in adjoining states) for as long as records 
have been kept at these stations. The driest year on record at 
any of the 100 stations was 1887 at Pontiac. Precipitation was 
49 percent of normal. At Pawpaw the driest year was 1922, 
when precipitation was 74 percent of the average annual 
amount. Driest years at other stations ranged between these 
two in percentage of normal precipitation, with the average 
precipitation of the driest years at all 100 stations averaging 65 
percent of normal. 

Precipitation during the wettest years on record at any of 
these stations ranged from 127 percent of the annual average at 
Morris (1942), to 175 percent (1858) at St. Louis. Average 
precipitation for the wettest years at all stations was 149 percent 
of normal. 

The above averages of the driest years and the wettest years 
are of course made up of different years. For several reasons it 
would be quite misleading to select any one year as the driest 
or the wettest year in the state as a whole. For one thing, most 
stations whose records are used in this bulletin have interrupted 
records, thus not reporting during years when other stations 
might be reporting their wettest or driest year. In the second 
place, some of the records do not extend back very far. The 
shorter the period of years on record, in general, the smaller the 
variation in any climatic element. In the third place, a very 
heavy rainfall may occur during some summer day at one station 
but not at any of the surrounding ones. Thus one station might 
have an annual maximum one year, while nearby stations 
might have greater rainfall in other years. 

Despite the variations from station to station, a few general- 
izations can be made concerning driest and wettest years. In 
northern Illinois (for climatological divisions of state, see Fig. 1) 
1902 was the wettest year on record at 12 of the 33 stations and 
the second wettest since 1900 at 5 others, while at 10 stations 
there were no reports for 1902. In central Illinois, with its 38 
stations, 1927 was wettest at 19 stations and second wettest at 
3 stations. At Watseka and at Burlington, Iowa, both near the 
northern margin of central Illinois, 1902 was wettest, placing 



1949] CLIMATE OF ILLINOIS 141 

them within the northern Illinois group, while at Palestine, near 
the southeastern portion of central Illinois, 1945 was the wettest 
year. This places it within the southern Illinois group, for 1945 
was the wettest year on record at 16 of the 29 stations in the 
southern third of the state, and was the wettest year of the 
present century at Golconda and Sparta. Four stations in south- 
ern Illinois reported 1945 as the second wettest year since 1900, 
and 5 stations as the third wettest. In general, 1902 was the 
wettest year on record in northern Illinois, 1927 in central Illi- 
nois, and 1945 in southern Illinois. 

Division of the state on the basis of driest years does not 
coincide quite so closely with the division given in Fig. 1. Should 
a line be drawn westward, beginning about midway between 
Kankakee and Watseka, passing south of Pontiac and Minonk 
but north of Peoria and Fairview, thence south, west of Havana, 
east of Jacksonville, west of White Hall, and east of Grafton, 
the area to the north and west would be generally found to have 
had its least annual precipitation in 1901. Naturally several 
exceptions occurred, but where 1901 was not driest, the differ- 
ence between that year and the driest reported was generally 
very small. 

Should another line be drawn westward from about midway 
between Casey and Palestine and between Effingham and New- 
ton, south of Greenville, and north of Edwardsville, the portion 
of Illinois to the south would be generally found to have had the 
least annual precipitation in 1936. At 18 of the 29 stations 1936 
was either driest or second driest. In central Illinois, or that 
portion of the state between the lines described above, all sta- 
tions except Peoria reported 1914 as driest or as second or third 
driest. 

In general, 1901 was the driest year in northern Illinois, 1914 
the driest in the central part of the state, and 1936 the driest in 
the south. 

Wet and dry growing seasons. In Appendix C (pages 295 
to 363) growing season precipitation is given by 10-day inter- 
vals for 1921 thru 1946. Analysis of these data on a year-to-year 
basis reveals that (1) the precipitation was above average in 
about half of the years and below average during the other half 



142 BULLETIN NO. 532 [April, 

of the years; (2) the greatest positive departure was slightly 
larger than the greatest negative departure; and (3) the great- 
est departures each way were in southern Illinois. 

Precipitation during the driest growing seasons at the sixty- 
six stations during the 1921-1946 perio'd averaged 58 percent of 
normal. (This average is based on the one driest growing season 
on record at each station, regardless of year.) The wettest grow- 
ing seasons during the same period received 151 percent of the 
annual precipitation. 

The average precipitation during the wettest 10-day periods 
(including the wettest period for every year of the 26-year 
period at each station) varied only slightly in the different 
sections of the state. Averages were 1.74 inch in northern Illi- 
nois, 1.78 inch in central Illinois, and 1.75 inch in southern 
Illinois. Average precipitation in the driest 10-day periods varied 
a little more. In northern Illinois the average was .71 inch, in 
central Illinois .79 inch, and in southern Illinois, .77 inch. 

When the one wettest period on record at each station in 
northern Illinois is considered, the average for all the stations 
in the area is shown to be 7.01 inches. This average is made up 
of such differences as 9.39 inches between August 11 and 20, 
1924, at Galva, and 5.33 inches between September 11 and 
20, 1936, at Morris. In central Illinois the average was 8.45 
inches, with extremes of 11.09 inches at Springfield between 
September 1 and 10, 1926, and 5.71 inches at Roberts from July 
21 to 31, 1926 (11 days). In the southern part of the state the 
average was 8.74 inches, with Nashville reporting 16.55 inches 
between August 11 and 20, 1946, and Grand Chain reporting 
6.33 inches between August 1 and 10, 1946. 

Since every station included in Appendix C had at least one 
10-day period with no precipitation, the average for the driest 
10-day periods was thruout the state. 

No long-time change in amount of precipitation. Not only 
are year-to-year variations from the average annual precipita- 
tion comparatively small, but they show no permanent increase 
or decrease in amount of precipitation. Fig. 41, for example, 
shows that in Peoria (where the average annual precipitation is 
35.01 inches) there have been three periods of conspicuously 



1949] CLIMATE OF ILLINOIS 


Peoria precipitation variations. For each year annual precipitation is given both as a total and as a five-year sliding average. 
Also five-year sliding averages are given for each season. (The five-year sliding average for 1858 is the average of the yearly 
precipitation for 1856 thru 1860; that for 1859 is the average of 1857 thru 1861, etc.) Note the fluctuations without a permanent > 
change. (Fig. 41) 


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144 



BULLETIN NO. 532 



[April, 



O 
-Q 










1949] CLIMATE OF ILLINOIS 145 

heavy precipitation. These were from the middle 1870's to the 
early 1880's; during the early 1900's; and during the late 1920's. 
Dry periods have also occurred, but these are less conspicuous 
than the wet periods. The lower part of the graph shows the 
seasons responsible for unusually heavy or light annual precipi- 
tation. For example, the peak of heavy annual precipitation 
in the early 1900's resulted from heavy summer rains, while 
summer and autumn precipitation produced the peak in the late 
1020*8. 

Fig. 42 gives the same information for Cairo that Fig. 41 
does for Peoria. A comparison of the two graphs shows that 
(1) fluctuation was greater in Cairo, (2) the early 1880's and 
the late 1920's were rainy periods at both places, (3) the early 
1900's were dry at Cairo but wet at Peoria, and (4) there was no 
definite period of years between wet spells and dry spells at 
either place. After about 1933 there was a general decrease in 
precipitation at Cairo, but 1945 and 1946 precipitation was con- 
siderably above the annual average. 

Other long-record stations in and near Illinois, like Peoria 
and Cairo, show rather marked fluctuations, but no definite 
periodicity and no permanent change. 

Snowfall 

Snowfall gets into the precipitation records in two ways. 
First, the amount is measured in inches or fractions thereof, and 
is recorded to make up the total amount of snowfall per month 
or per year. Second, the snow is melted to determine its water 
equivalent. In its melted form it is included in the total pre- 
cipitation. 

Table 3 and Fig. 43, pages 146 to 148, are based on the rec- 
ords of snowfall in its unmelted form. They show the geographi- 
cal distribution of snowfall in Illinois. This distribution reflects 
the north-to-south extent of the state, the amount of snowfall in- 
creasing fairly uniformly from just less than 10 inches in the 
extreme south to slightly more than 35 inches in the north- 
western part (represented by Dubuque, Iowa). 

July and August are the only months in which snow has not 
been reported in some part of Illinois, altho only Aurora and 



146 



BULLETIN NO. 532 



[April, 



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Table 3. ILLINOIS SNOWF 


Station and county 




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1949] 



CLIMATE OF ILLINOIS 



147 



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148 



BULLETIN NO. 532 



Chicago have reported a trace in June. The months of heaviest 
snowfall in northern and central Illinois are January, February, 
and December in that order, while in southern Illinois the order 
is February, January, and December. 



|~ "1 10 TO 15IN. 

15 TO 20IN. 
KSN20TO 25 IN. 

25 TO 30 IN. 

30 TO 35 IN. 

OVER 35 IN. 




Average annual snowfall distribution. As is to be expected, the amount of 
snow increases rather uniformly from south to north. (Fig. 43) 



APPENDIX A 

DETAILED TEMPERATURE DATA 

The five tables in this Appendix give detailed temperature data 
for five long-record stations in Illinois and for Dubuque, Iowa, 
and St. Louis, Missouri, which are roughly representative of 
nearby areas in Illinois. All the records are thru 1946, and ex- 
tend back as far as data are available for the various stations. 
Measurements are given in degrees Fahrenheit. 

Index to Weather Stations 

Average monthly and annual temperatures (Table 4) 

Page Page 

Chicago 150 Urbana 155 

Dubuque 151 Cairo 156 

Peoria 153 St. Louis 158 

Springfield 154 

Average maximum monthly and annual temperatures (Table 5) 

Chicago 160 Urbana 165 

Dubuque 161 Cairo 166 

Peoria 162 St. Louis 167 

Springfield 163 

Average minimum monthly and annual temperatures (Table 6) 

Chicago 169 Urbana 174 

Dubuque 170 Cairo 175 

Peoria 171 St. Louis 176 

Springfield 172 

Monthly and annual highest temperatures (Table 7) 

Chicago 178 Urbana 183 

Dubuque 179 Cairo 184 

Peoria 181 St. Louis 186 

Springfield 182 

Monthly and annual lowest temperatures (Table 8) 

Chicago 188 Urbana 193 

Dubuque 189 Cairo 194 

Peoria 191 St. Louis 196 

Springfield 192 



149 



150 BULLETIN NO. 532 [April, 

Table 4. Average Monthly and Annual Temperatures 
( Fahrenheit) 

Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual 
CHICAGO, Cook county 



1871 


. . 30 2 


31.8 


41 1 


51 1 


58 5 


68 7 


72 5 


72 3 


61 1 


50 2 


34 3 


20 8 


49 4 


1872 ... 


22.5 


25.4 


28.0 


47.7 


57.0 


70.5 


72 5 


72 


64 2 


50 9 


32 3 


18 5 


46 8 


1873.... 


19.3 


23.7 


32.3 


43.1 


52.9 


69.5 


69.3 


71.6 


63.2 


50.3 


34 9 


32 1 


46 8 


1874 


. . . . 27 . 8 


30.6 


36 4 


39.2 


59 


71 6 


75 3 


73 2 


67 7 


54 4 


40 7 


32 9 


50 7 


1875.... 


15.8 


14.7 


31.0 


43.6 


55.3 


64.2 


69.3 


68 5 


61 5 


48 8 


37 3 


36 1 


45 5 


1876... 


. . 32.5 


32.0 


34.0 


47*. 8 


60.2 


69.2 


74.7 


74.6 


62.4 


50.1 


40 2 


19 5 


49 8 


1877.... 


22.1 


37.4 


28.9 


47.0 


58.0 


68.1 


74 1 


72 4 


67 4 


56 3 


40 7 


43 5 


51 3 


1878 


31.5 


36.5 


45.2 


52.8 


56.0 


66.5 


75.8 


74.7 


66.8 


53 5 


44 7 


23 9 


52 3 


1879 


. .20.9 


27.1 


40 6 


47 8 


58 6 


65 5 


76 1 


72 9 


61 6 


61 5 


43 1 


31 2 


50 6 


1880 


... 39 . 5 


34.9 


38.4 


49.6 


65.8 


71.8 


73 7 


73 3 


63 5 


52 1 


32 3 


24 1 


51 6 


1881 


19 1 


25.1 


32 4 


42 2 


61 8 


64 4 


73 8 


76 


70 8 


56 '9 


40 8 


37 8 


50 1 


1882 


. . . . 28 . 3 


39.1 


39 6 


46.4 


52 2 


65 2 


69 3 


72 


65 6 


58 7 


43 3 


26 7 


50 5 


1883 


16.1 


22.7 


32.0 


47.3 


53.8 


65.7 


71.1 


68.4 


61 2 


53 


42 9 


31 1 


47 1 


1884 


.. 18.5 


27 9 


34 2 


44 7 


56 9 


65 4 


69 1 


68 9 


69 4 


57 1 


41 7 


30 1 


48 7 


1885 


. . . 18.3 


17.9 


31.3 


46.7 


54.2 


66 6 


73 7 


69 


65 


52 3 


43 4 


31 9 


47 5 


1886... 


. . 22.1 


29.5 


37.2 


50.1 


58.0 


67.4 


72.3 


73.2 


66 6 


57.7 


39.1 


25 4 


49 9 


1887 


... 16.8 


26.9 


33 1 


49 3 


60 3 


67 5 


75 2 


69 3 


63 2 


48 1 


37 2 


27 3 


47 8 


1888.. ., 


... 15.2 


23.5 


30.8 


47.0 


53.4 


67.3 


72 5 


70 1 


60 7 


50 


42 6 


32 8 


47 2 


1889 


. . . 29.4 


20.8 


39.3 


47.4 


57.1 


62.4 


70.4 


71.3 


63.7 


50 3 


39 6 


41 2 


49 4 


1890 


. 31.2 


33.0 


30.2 


46 5 


54 1 


71 


72 4 


68 1 


61 


52 


42 5 


31 1 


49 4 


1891... 


. . 30.5 


29.2 


31.3 


47.9 


54.1 


66.5 


67.3 


69 5 


69 6 


53 2 


34 2 


35 9 


49 1 


1892 


19 8 


30 8 


31 7 


44 9 


53 1 


65 2 


71 9 


71 4 


64 5 


54 2 


35 3 


23 9 


47 2 


1893 


... 12.3 


22.1 


33.9 


45 2 


53 1 


68 6 


74 1 


70 3 


64 7 


53 2 


36 6 


25 9 


46 7 


1894.... . 


. . . 27.8 


23.6 


41.9 


47.7 


56.8 


72.2 


73 7 


71 3 


66 8 


52 7 


35 


32 9 


50 2 


1895 


. . . 17.9 


17.6 


32.4 


47.2 


59.9 


71.0 


70.5 


72.9 


69.2 


46.8 


37 1 


30 1 


47 7 


1896... 


. . 27.3 


27.2 


31.9 


54.3 


66 2 


67 8 


72.5 


73 3 


61 2 


50 2 


39 


33 4 


50 4 


1897 


... 22.1 


29.2 


35.4 


46.9 


55.7 


66.0 


74 5 


69 5 


70 1 


59 


39 3 


25 5 


49 4 


1898 


... 28.9 


28 2 


41 1 


45 3 


56 9 


69 6 


73 7 


71 9 


68 2 


51 2 


37 6 


24 8 


49 8 


1899 


... 23.3 


18.5 


30.5 


50.9 


59 7 


70 7 


72 5 


74 


63 3 


58 6 


45 4 


27 7 


49 6 


1900 


. . . 29.0 


20.7 


29.7 


47.7 


58.8 


64.8 


71 9 


76 8 


66 2 


62 


39 


30 5 


49 8 


1901 


... 26.3 


17.6 


34.7 


45 9 


54 8 


69 9 


77 7 


72 1 


64 9 


56 


38 2 


24 5 


48 6 


1902 


... 25 . 3 


21.4 


39.3 


47.3 


59 7 


65 


72 7 


68 9 


61 4 


55 8 


47 6 


27 


49 3 


1903 


24 3 


25 6 


41 1 


48 1 


60 5 


62 


72 5 


68 9 


65 


54 2 


37 


20 5 


48 3 


1904 


... 18.0 


17.8 


35 9 


41 6 


58 


65 


71 3 


68 8 


65 1 


54 


43 4 


27 3 


47 2 


1905 


. . . 18.4 


17.6 


39.9 


46.4 


57.1 


66 2 


69 8 


72 8 


66 4 


52 3 


39 5 


30 6 


48 1 


1906 


31.2 


26 5 


29 2 


49 9 


58 8 


67 1 


70 2 


74 4 


69 


51 7 


40 7 


31 6 


50 


1907. ... 


. . . 26.4 


25.3 


41.6 


39 


50 6 


65 3 


71 9 


70 


63 5 


51 5 


39 9 


31 6 


48 


1908 


27 2 


25 6 


39 6 


48 2 


57 7 


67 5 


72 9 


72 2 


69 5 


54 1 


42 4 


30 1 


50 6 


1909 


. . . 27.4 


31 3 


35 


44 2 


54 9 


65 7 


70 9 


73 6 


62 9 


49 5 


47 4 


20 4 


48 6 


1910 


... 24 . 2 


23.7 


47.6 


50 4 


52 4 


67 3 


74 6 


72 1 


64 1 


57 5 


34 9 


25 2 


49 5 


1911 


27 8 


31 3 


38 2 


45 3 


64 9 


71 5 


74 6 


70 6 


65 9 


52 1 


34 3 


33 8 


50 9 


1912 


... 10.5 


20.7 


27 8 


48 


58 9 


65 1 


71 5 


69 8 


66 6 


54 7 


41 7 


32 2 


47 3 


1913 


.. . 27.9 


23.7 


34.2 


48.0 


56 6 


69 6 


73 5 


73 1 


64 3 


52 2 


46 1 


36 2 


50 5 


1914 


. . . 31.0 


19 1 


34 7 


47 5 


61 3 


69 3 


73 6 


73 


65 5 


58 3 


43 3 


22 9 


50 


1915 


... 22 . 7 


33.4 


33 8 


55 5 


53 1 


62 9 


68 8 


65 4 


66 1 


55 3 


43 1 


27 9 


49 


1916 


27 4 


23 9 


33 6 


47 2 


58 3 


62 6 


77 


75 4 


63 3 


53 3 


42 1 


24 8 


49 1 


1917 


. . . 22.8 


18.7 


37 8 


44 


51 6 


62 9 


70 8 


69 2 


62 6 


43 9 


41 9 


21 2 


45 6 


1918 


. . . 11.5 


26.0 


41.2 


43.1 


62 6 


66 


70 


74 8 


58 


55 8 


42 


36 2 


48 9 


1919 


... 29 4 


29 6 


37 4 


47 4 


54 1 


72 


75 4 


71 6 


67 2 


56 2 


38 2 


20 2 


49 9 


1920 


. . . 17.5 


24.6 


39 1 


42 1 


54 


67 6 


70 


69 4 


68 2 


60 4 


39 1 


31 4 


48 6 


1921... . 


... 31 6 


32 6 


45 4 


53 6 


60 6 


73 2 


79 4 


71 6 


68 4 


54 


40 


31 7 


53 5 


1922 


. . . 23.5 


28 7 


38 6 


48 


63 2 


70 


72 


71 8 


68 4 


56 9 


43 4 


28 7 


51 1 


1923 


. 29 9 


20 8 


32 2 


45 7 


53 5 


69 9 


72 8 


70 


65 


51 4 


42 8 


38 6 


49 4 


1924 


... 18.0 


27 3 


33 6 


48 


53 1 


63 6 


68 7 


70 


59 3 


58 8 


40 8 


22 2 


47 


1925 


. . . 24.0 


30.6 


38 4 


52 


53 8 


70 8 


71 4 


71 8 


70 


44 3 


38 


24 


49 1 


1926... 


. . . 26.4 


30 9 


30 2 


42 


58 4 


63 4 


71 i 


72 


64 4 


52 4 


37 


26 6 


47 9 


1927 


. . . 24.8 


35.0 


42 


47 8 


56 8 


64 8 


71 7 


66 7 


69 


58 


43 2 


26 9 


50 6 


1928 . . 


... 25 2 


30 3 


36 9 


44 7 


58 2 


63 


72 8 


72 2 


61 4 


56 5 


42 2 


32 2 


49 6 


1929 


... 17.6 


21 6 


43 2 


51 1 


56 8 


64 4 


73 8 


70 6 


64 6 


53 1 


36 3 


28 6 


48 5 


1930. . . 


.. 20.1 


37.1 


36.1 


49.2 


61.2 


70.1 


74.2 


73.4 


fifi 9 


51 6 


42 4 


29 7 


si n 



1949] CLIMATE OF ILLINOIS: APPENDIX A 151 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June . July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHICAGO, Cook county, 


concluded 


1931 


32 


35 6 


34 8 


49 2 


55.6 71 8 76.4 


73.2 


71.2 


58.8 


50.0 


38.4 


53.9 


1932 


. . 33.6 


35.0 


30.1 


46.4 


59.6 70.6 74.7 


73.7 


64.4 


52.6 


37.2 


28.8 


50.6 


1933 


36 7 


26 2 


35 4 


46 8 


60 76 2 75 6 


71 4 


69 8 


52 8 


38.0 


31.3 


51.7 


1934 


. 32.3 


22.9 


32.9 


48.6 


65.2 71.6 76.6 


72.4 


64.2 


56.0 


45.8 


26.2 


51.2 


1935 


. 25.6 


29.6 


41.3 


44.0 


52.0 65.1 76.8 


73.4 


65.8 


54.2 


39.6 


25.2 


49.4 


1936... 


. 19.0 


15.2 


39.6 


43.6 


64.4 64.6 76.8 


75.0 


68.2 


53.6 


38.0 


34.0 


49.3 


1937 


. . 26.9 


26.4 


32.8 


46.5 


57.9 65.9 74.4 


75.7 


65.1 


51.2 


37.4 


26.6 


48.9 


1938 


25 4 


34 6 


45 


50 2 


58 3 67 6 73 8 


75.0 


65.0 


58.8 


43.6 


29.2 


52.2 


1939 


. 31.6 


27.6 


38.2 


45.2 


61.4 70.8 74.0 


72.6 


70.0 


56.0 


41.6 


35.0 


52.0 


1940 


. 16.2 


29.2 


32.2 


44.6 


54.1 67.4 74.2 


72.0 


64.6 


57.4 


38.6 


33.5 


48.9 


1941... 


. 28.1 


25.6 


32.0 


52.7 


62.4 69.4 73.7 


73.6 


68.8 


56.9 


43.2 


36 4 


51.9 


1942 


. 25.6 


26.5 


39.6 


53.9 


59.5 68.2 75. 2 


72.4 


62.4 


53.3 


40.9 


23.0 


50.0 


1943 


. 22.6 


27.8 


32.2 


45.6 


56.6 72.2 75.7 


75.0 


61.6 


53.7 


36.2 


27.6 


48.9 


1944 


. 31.4 


29.0 


32.3 


45.3 


64.4 72.8 74.2 


74.1 


66.2 


53.4 


42.7 


22.0 


50.6 


1945 


. 19.2 


28.8 


48.6 


49.8 


54.1 65.4 72.0 


72.0 


64.0 


51.4 


39.8 


22.2 


48.9 


1946 


. 26.7 


28.6 


47.2 


51.1 


56.9 68.3 74.6 


69.9 


65.6 


58.5 


42.4 


31.9 


51.8- 


Aver 


24.6 


26.8 


36.2 


47.2 


57.6 67.7 73.1 


71.8 


65.3 


53.9 


40.2 


29.0 


49.4 


DUBUQUE, Dubuque county, Iowa 


1851... 


. 23.5 


31.1 


41.9 


48.1 


60.6 67.7 75.0 


67.5 


67.7 


49.5 


31.6 


21.6 


48.8 


1852 


. 21.1 


28.3 


32.8 


41.9 


59.6 67.9 73.2 


70.6 


59.6 


54.3 


30.6 


23.1 


46.9 


1853 




22.7 


34.4 


47.6 


72.4 69.4 


71.4 


63.6 


46.6 


38.2 


26.6 




1854 


. 15.4 


28.1 


39.2 


52.0 


60.7 70.2 77.3 


74.7 


68.2 


56.6 


37.9 


27.7 


50.7 


1855 


. 24.2 


18.8 


31.3 


55.4 


63.9 68.0 73.3 


69.3 


64.6 


48.4 


39.6 


21.6 


48.2 


1856... 


. 10.6 


17.3 


28.5 


51.1 


61.4 76.5 . 














1857 










78.5 


71.1 


65.7 


49.3 


29.3 


31.3 




1858 


. 31.1 


16.9 


39.1 


46.8 


56.2 72.9 73.5 


72.3 


64.4 


51.1 


32.9 


23.4 


48.4 


1859 


. 22.8 


25.9 


40.3 


43.7 


63.0 66.2 75.0 


73.3 


60.7 


48.6 


39.2 


17.4 


48.0 


1860 


. 21.7 


27.2 


42.8 


51.3 


65.8 70.8 74.8 


70.4 


60.2 


51.8 


37.7 


22.0 


49.7 


1861... 


. 16.2 


24.7 


33.3 


51.0 


56.9 71.0 72.5 


71.4 


61.4 


50.4 


35.7 


28.0 


47.7 


1862 


. 14.8 


14.9 


31.2 


44.6 


60.8 68.4 74.8 


71.6 


64.2 


50.4 


34.5 


29.5 


46.6 


1863 


28 6 


24 8 


33 


51 4 


62 3 67 6 71 2 


71 7 


62.6 


43 


34 6 


24.8 


48.0 


1864 


.14.8 


24.8 


32.7 


46.1 


63.3 72.1 76.0 


72.1 


63.1 


47.1 


33.9 


17.0 


'46.9 


1865 


. 18.1 


28.6 


31.7 


47.2 


61.7 70.8 68.5 


71.5 


70.2 


50.1 


40.8 


20.6 


48.3 


1866... 


. 10.3 


18.6 


29.7 


50.5 


59.1 68.3 76.3 


66.2 


57.2 


50.8 


38.5 


22.8 


45.8 


1867 


. 15.4 


25.4 


25.9 


47.5 


51.9 72.3 73.9 


74.1 


64.3 


51.5 


40.1 


23.2 


47.1 


1868 


12 4 


20 4 


39 4 


42 5 


60 3 68 8 80 8 


68.4 


56 5 


46 7 


37.0 


19.9 


46.1 


1869 


. 23.6 


25.6 


28.8 


45.4 


58.8 68.2 71.3 


71.6 


62.1 


41.6 


31.5 


25.2 


46.2 


1870 


. 20.9 


24.8 


30.7 


52.4 


66.5 73.8 77.4 


68.5 


65.8 


51.1 


38.8 


23.8 


49.5 


1871... 


. . 23.2 


27.0 


38.3 


51.4 


64.2 71.3 74.6 


71.6 


59.7 


52.7 


31.6 


16.7 


48.5 


1872 
























1873 
























1874 




22.6 


33.6 


42.0 


68.4 72.1 77.7 


74.2 


64.2 


52.2 


33.8 


25.3 




1875 


. 6.6 


5.5 


27.8 


45.0 


60.0 66.5 72.8 


68.5 


60.6 


46.4 


32.5 


32.8 


43.8 


1876. . . 


. . 26.8 


27.8 


31.3 


48.6 


61.2 68.4 75.2 


74.2 


61.4 


48.2 


34.6 


13.4 


47.6 


1877 


. . 15.0 


35.2 


27.4 


49.2 


61.9 68.2 75.1 


72.6 


66.9 


51.8 


35.4 


40.4 


49.9 


1878 


,. 27.8 


35.7 


47.2 


53.8 


56.4 67.5 76.9 


74.2 


64.3 


50.4 


39.8 


20.0 


51.2 


1879 


. 17.0 


22.2 


37.3 


50.2 


62.9 69.0 76.2 


71.7 


60.0 


59.7 


37.4 


21.0 


48.7 


1880 


. 34.0 


28.9 


35.0 


49.0 


67.4 72.0 74.8 


74.0 


62.0 


49.3 


27.8 


19.2 


49.5 


1881... 


. 12.2 


20.0 


31.1 


44.9 


68.8 69.4 76.3 


75.6 


67.4 


53.4 


36.2 


34.2 


49.1 


1882 


, . 23.3 


35.5 


37.0 


48.4 


53.9 66.5 68.2 


71.1 


61.8 


54.1 


37.3 


22.2 


48.3 


1883 


. 9.8 


17.6 


30.6 


50.0 


54.8 68.0 72.6 


68.3 


59.0 


49.2 


39.0 


27.0 


45.5 


1884 


, . 13.6 


21.7 


32.1 


48.4 


60.4 69.6 70.8 


69.0 


68.2 


55.7 


37.2 


21.4 


47.8 


1885 


. 11.3 


12.6 


30.6 


47.4 


57.6 67.6 74.5 


67.2 


62.3 


47.8 


38.2 


24.8 


45.1 


1886... 


. 12.4 


22.0 


31.6 


51.8 


61.8 68.6 75.6 


74.7 


64.2 


55.5 


33.8 


15.7 


47.3 


1887 


. 10.6 


20.5 


32.6 


50.5 


66.2 72.3 77.9 


71.0 


62.6 


46.8 


35.4 


22.8 


47.4 


1888 


. . 7.1 


18.4 


26.3 


48.0 


54.0 69.1 75.4 


70.6 


59.6 


48.5 


39.0 


29.9 


45.5 


1889 


. . 23.6 


17.4 


41.0 


50.0 


59.4 66.2 73.0 


71.6 


62.6 


47.6 


34.8 


37.4 


48.7 


1890 


22.2 


28.6 


27.9 


51.2 


56.4 73.6 75.4 


68.8 


59.8 


50.6 


39.8 


27.2 


48.5 



a Data since July, 1942, are from the Chicago Municipal Airport. 



152 BULLETIN NO. 532 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



[April, 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


DUBUQUE, Dubuque county, 


Iowa, 


concluded 


1891 


. . 26.8 


23.1 


27.7 


50.8 


58.2 


69.8 68.8 


70.2 


69.3 


51.0 


31.0 33.0 


48.3 


1892 


. . 14.6 


28.6 


31.4 


45.7 


55.2 


68.4 74.2 


72.6 


64.2 


54.6 


31 4 17 9 


46 6 


1893 


.. 6.6 


15.0 


32.0 


45.2 


56.8 


71.8 76.3 


70.8 


64.0 


53.2 


34.5 22.2 


45.7 


1894 


. . 21.8 


20.0 


41.4 


51.8 


61.5 


73.4 77.0 


74.2 


66.2 


52.2 


33.2 32.3 


50.4 


1895 


. . 13.0 


15.6 


35.5 


53.9 


62.1 


72.7 74.4 


74.4 


69.8 


47.8 


35.9 28.0 


48.6 


1896... 


. . 24.3 


27.1 


31.6 


55.0 


68.0 


70.9 73.4 


72.6 


59.6 


49.0 


33.0 30.4 


49.6 


1897 


. . 17.8 


24.8 


32.5 


47.6 


58.7 


68.2 76.0 


68.6 


69 9 


57 4 


35 19 8 


48 


1898 


. . 24.1 


24.1 


37.6 


47.6 


59.8 


71.1 74.1 


71.2 


65.8 


48.8 


33.8 19.2 


48.1 


1899 


. . 20.3 


13.8 


25.8 


50.6 


60.8 


70.6 74.0 


74.4 


62.4 


56.8 


44 . 23 . 5 


48.1 


1900 


. . 25.6 


15.4 


28.4 


51.6 


63.2 


69.7 72.8 


78.0 


65.4 


60.2 


35.0 27.4 


49.4 


1901... 


. . 23.6 


14.5 


32.8 


50.1 


60.2 


72.5 82.2 


73.6 


62.8 


54.4 


35.3 21.8 


48.6 


1902 


. . 22.8 


17.6 


39.3 


48.5 


63.4 


65.0 73.4 


68.5 


59.6 


53.5 


44.0 19.0 


48.1 


1903 


. . 22.4 


22.4 


39.6 


49.6 


62.8 


64.6 72.4 


68.4 


61.8 


52.4 


34.4 18.4 


47.4 


1904 


. . 13.4 


14.4 


33.8 


44.3 


60.2 


67.5 71.2 


68.8 


64.2 


52.8 


41.1 23.4 


46.3 


1905 


. 12.0 


13.4 


39.0 


48.2 


58.9 


70.1 71.4 


73.5 


67.0 


50.9 


38.4 27.6 


47.5 


1906... 


, . 25.2 


22.4 


27.2 


52.2 


60.4 


68.0 72.2 


74.2 


68.6 


50.8 


36.6 26.8 


48.7 


1907 


. . 19.8 


23.9 


40.9 


41.6 


52.7 


66.4 73.6 


70.1 


61.7 


49.5 


37.1 29.2 


47.2 


1908 


. . 24.8 


24.0 


37.8 


48.8 


59.7 


67.4 73.4 


69.6 


68.1 


51.7 


38.8 25.8 


49.2 


1909 


. 21.4 


26.9 


32.8 


43.4 


58.2 


68.7 71.8 


75.0 


62.2 


48.4 


44.2 16.6 


47.5 


1910 


. 18.4 


18.0 


47.8 


51.4 


56.2 


70.0 76.0 


72.8 


62.8 


55.0 


32.4 23.2 


48.7 


1911... 


. . 21.2 


28.0 


38.9 


46.4 


65.9 


73.8 74.8 


70.1 


64.0 


48.9 


30.7 31.0 


49.5 


1912 


.. 3.8 


17.1 


25.2 


49.8 


61.8 


66.8 73.2 


69.7 


63.8 


52.5 


40.6 30.2 


46.2 


1913 


. 22.7 


20.4 


32.8 


51.0 


59.2 


71.4 75.0 


74.2 


63.6 


49.8 


44.2 34.2 


49.9 


1914 


. 28.2 


15.8 


34.6 


48.5 


62.6 


69.8 76.4 


72.8 


64.4 


56.7 


40.6 18.4 


49.1 


1915 


. 17.2 


30.2 


32.0 


57.7 


54.8 


64.7 69.6 


65.6 


64.4 


54.0 


41.2 25.5 


48.1 


1916... 


.. 21.6 


20.1 


33.6 


48.2 


60.0 


64.0 80.3 


75.0 


62.2 


51.6 


37.6 19.3 


47.8 


1917 


. 16.6 


14.2 


34.8 


46.4 


54.8 


65.2 73.8 


68.6 


61.8 


41.9 


40.2 15.8 


44.5 


1918 


. 8.2 


23.0 


41.6 


44.2 


64.9 


68.7 72.3 


74.6 


57.4 


54.0 


41.2 33.0 


48.6 


1919 


. 25.9 


25.7 


36.6 


49.0 


57.8 


72.8 76.6 


70.8 


66.1 


52.0 


34.6 14.4 


48.5 


1920 


. 13.4 


21.1 


37.2 


42.8 


58.8 


70.9 71.2 


69.6 


66.4 


58.6 


35.6 27.3 


47.7 


1921... 


. 28.5 


29.8 


41.2 


52.2 


63.6 


75.0 79.0 


71.6 


66.9 


52.9 


34.2 27.2 


51.8 


1922 


. 19.7 


23.8 


37.4 


48.8 


64.8 


71.2 71.0 


72.5 


65.9 


55.4 


42.7 23.8 


49.8 


1923 


.25.8 


18.3 


27.6 


47.0 


60.0 


72.7 76.8 


69.6 


62.8 


48.4 


40.0 34.4 


48.6 


1924 


. 13.6 


25.7 


32.0 


49.4 


53.8 


66.0 70.0 


70.0 


58.2 


57.5 


38.4 16.4 


45.9 


1925 


. 21.6 


27.7 


38.4 


54.8 


56.0 


70.2 72.5 


72.2 


67.8 


40.9 


35.7 20.0 


48.2 


1926... 


. 22.2 


29.3 


29.2 


44.4 


62.5 


64.4 73.2 


72.8 


62.8 


49.9 


32.9 22.0 


47.1 


1927 


. 19.7 


31.4 


40.1 


48.4 


56.8 


66.0 72.4 


67.2 


66.8 


55.0 


39.5 20.3 


48.6 


1928 


. 23.8 


28.2 


37.4 


44.2 


62.4 


64.5 73.6 


71.8 


59.8 


53.8 


39.2 29.1 


49.0 


1929 


. 9.6 


14.0 


38.6 


51.0 


56.8 


66.4 74.0 


70.4 


62.6 


50.7 


32.3 25.6 


46.0 


1930... 


. 11.8 


33.7 


35.6 


50.6 


60.3 


69.0 76.0 


74.2 


65.6 


50.1 


40.6 25.4 


49.4 


1931... 


. 28.6 


34.3 


34.4 


51.0 


56.8 


75.1 78.1 


73.1 


70.0 


56.8 


45.8 35.2 


53.3 


1932 


. 26.5 


30.7 


27.2 


48.2 


62.1 


72.1 76.0 


72.3 


61.9 


48.8 


33.6 23.5 


48.6 


1933 


. 33.0 


21.4 


35.0 


47.8 


60.7 


77.4 75.6 


70.5 


68.4 


49.8 


36.4 26.0 


50.2 


1934 


. 28.4 


21.6 


32.8 


49.6 


69.0 


77.3 77.5 


71.0 


61.9 


56.0 


43.3 21.1 


50.8 


1935 


. 19.4 


27.2 


39.4 


47.0 


55.4 


65.6 79.2 


73.1 


65.2 


52.0 


34.7 21.8 


48.3 


1936... 


. 11.9 


7.8 


38.2 


45.2 


66.4 


68.6 81.1 


76.8 


66.3 


50.0 


34.8 29.2 


48.0 


1937 


. 16.6 


21.0 


31.8 


47.2 


61.2 


68.8 75.9 


77.1 


64.8 


49.8 


34.2 22.8 


47.6 


1938 


. 20.0 


31.6 


42.8 


50.8 


59.8 


69.0 75.9 


75.0 


65.2 


57.8 


38.8 26.0 


51.1 


1939 


. 28.4 


22.4 


36.0 


46.5 


66.0 


71.8 76.2 


71.9 


68.4 


53.4 


40.4 33.2 


51.2 


1940 


. 11.8 


25.4 


30.6 


47.0 


57.8 


71.4 76.8 


71.0 


64.9 


56.4 


34.8 29.2 


48.1 


1941... 


. 24.8 


22.4 


31.8 


54.7 


65.6 


71.0 75.8 


74.7 


66.8 


55.0 


41.8 32.4 


51.4 


1942 


. 21.8 


24.2 


39.4 


55.0 


59.4 


69.4 74.5 


72.0 


61.3 


52.8 


38.9 20.6 


49.1 


1943 


. 16.8 


24.8 


30.6 


47.8 


57.6 


72.1 76.6 


74.0 


60.2 


51.8 


34.3 27.0 


47.8 


1944 


. 29.7 


26.8 


30.8 


45.2 


64.6 


71.8 72.9 


72.9 


65.3 


53.1 


40.6 20.6 


49.5 


1945 


. 17.2 


25.0 


47.0 


49.6 


54.6 


64.8 72.0 


72.6 


62.8 


51.1 


37.0 19.2 


47.7 


1946 


. 23.4 


26.6 


46.0 


54.0 


57.5 


69.4 74.4 


70.0 


63.6 


57.0 


39.7 30.4 


51.0 


Aver 


. 19.6 


23.1 


34.6 


48.8 


60.4 


69.6 74.6 


71.7 


63.8 


51.6 


36.8 24.7 


48.3 



1949] CLIMATE OF ILLINOIS: APPENDIX A 153 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. 


Sept. Oct. 


Nov. 


Dec. 


Annual 


PEORIA 


, Peoria county 


1856 


. 15.4 


22.0 


33.4 


55.1 


59.4 


73.4 75.1 


68.2 


62.5 55.2 


36.5 


22.2 


48.2 


1857 


. 12.2 


34.9 


31.2 


38.5 


56.3 


67.5 74.4 


71.2 


66.4 50.4 


34.2 


34.1 


47.5 


1858 


. 34.4 


20.4 


40.5 


49.4 


56.5 


72.3 74.5 


72.8 


64.5 51.1 


35.1 


31.3 


50.2 


1859 


.27.2 


32.1 


43.8 


46.4 


64.5 


68.3 75.2 


71.5 


62.9 49.3 


42.4 


19.4 


50.2 


1860 


. 25 2 


31 6 


43 6 


52 3 


66 4 


72 4 74.1 


72 5 


63 7 53 3 


36 4 


23 6 


51 3 


1861... 


. 23.2 


33.7 


38 .'6 


51.7 


57.4 


72.3 72.2 


74.1 


63.5 53.4 


39.2 


33.4 


51.1 


1862 . 


. 21.1 


23 2 


36 2 


47.2 


62.6 


68.7 75 4 


74 6 


67 3 53 2 


36 


34 3 


50 


1863 


. 32.5 


31.2 


36.4 


51.2 


62.8 


66.6 72.1 


72.4 


62.3 45.1 


40.2 


31.1 


50.2 


1864 


. 23.2 


33.4 


37.3 


46.5 


63.3 


71.1 74.4 


72.3 


64.4 48.0 


39.2 


25.4 


49.1 


1865 


. 23.4 


35.2 


39.1 


48.6 


61.1 


72.0 68.2 


70.4 


70.2 53.4 


41.0 


25.0 


50.5 


1866... 


. 24.2 


25.3 


33.2 


53.7 


58.0 


67.6 75.1 


67.4 


57.9 52.6 


41.1 


27.0 


48.9 


1867 


. 19.0 


31.9 


28.5 


48.9 


53.0 


72 . 1 73 . 4 


73 1 


66 . 8 53 . 6 


43.0 


28.1 


49.3 


1868 


. 18.0 


26.9 


44.3 


45.0 


59.6 


69.2 80.0 


68.0 


59.0 50.2 


40.0 


24.4 


48.9 


1869 


. 33.1 


31.4 


31.4 


46.8 


59.0 


66.0 70.0 


74.0 


64.0 44.0 


34.6 


29.4 


48.6 


1870 


. 27.2 


30'. 3 


34.4 


53.0 


65.6 


72.1 78.0 


71.5 


68.0 54.0 


42.1 


26.2 


51.8 


1871... 


. 28.5 


32.0 


44.6 


54.8 


64.6 


72.0 73.5 


73.0 


63.3 56.0 


35.1 


23.2 


51.7 


1872 


. 25.3 


28.2 


33.4 


52.0 


62.4 


73.2 76.3 


76.0 


64.3 51.1 


32.0 


19.4 


49.6 


1873 


. 17.9 


24.8 


37.4 


47.6 


61.2 


77.0 75.1 


76.5 


62.6 48.0 


34.6 


31.0 


49.6 


1874 


.27.2 


30.0 


37.6 


42.7 


65.0 


75.2 78.3 


76.0 


67.4 53.8 


37.6 


29.6 


51.5 


1875 


. 13.2 


14.0 


31.6 


46.5 


61.0 


70.1 74.0 


72.2 


63.0 48.4 


35.0 


37 1 


46.9 


1876... 


. 32.5 


33.2 


34.2 


52.6 


64.8 


69.0 76.6 


74.0 


63.6 49.8 


37.2 


17.8 


50.3 


1877 


. 20.0 


37.3 


32.3 


52.0 


62.8 


69 . 7 76 . 6 


74.0 


68.4 56.0 


38.6 


44.3 


52.6 


1878 


. 31.5 


37.3 


49.8 


56.0 


60.0 


69.4 80.0 


76.6 


67.2 51.8 


41.8 


21.4 


53.4 


1879 


.19.6 


22.8 


41.5 


52.1 


66.2 


71.0 79.0 


76.0 


62.4 61.1 


42.0 


29.0 


51.4 


1880 


. 40.2 


35.0 


39.1 


53.0 


68.3 


74.3 76.6 


76.7 


63.4 49.8 


30.2 


22.4 


52.5 


1881... 


. 17.1 


23.7 


32.2 


45.8 


69.6 


71.0 78.1 


78.4 


71.2 56.6 


39.9 


37.3 


52.0 


1882 


. 28.4 


40.3 


42.0 


52.5 


57.2 


71.0 72.0 


73.6 


64.2 57.0 


42.3 


?7 1 


52.4 


1883 


. 15.0 


23.7 


35.1 


53.1 


58.3 


70.3 75.1 


71.0 


62.3 51.0 


42.5 


31.4 


49.1 


1884 


. 17.7 


29.2 


37.6 


51.2 


62.4 


72.0 74.2 


73.0 


71.4 57.5 


41.8 


26.8 


51.2 


1885 


. 16.8 


15.9 


34.2 


51.2 


62.0 


71.0 79.2 


72.1 


65.4 50.6 


42.0 


30.8 


48.8 


1886... 


. 16.9 


26.4 


37.2 


54.7 


64.7 


71.1 77.1 


75.7 


66.8 55.4 


36.6 


21.0 


50.3 


1887 


. 17.9 


29.7 


35.9 


54.4 


68.1 


74.7 80.1 


73.6 


65.6 47.9 


38.1 


26.9 


51.1 


1888 


. 15;5 


25.4 


34.1 


52.4 


58.5 


71.4 76.6 


69.8 


58.9 48.3 


38.9 


31.3 


48.4 


1889 


. 27.5 


22.6 


40.1 


51.9 


59.6 


70.3 73.5 


70.3 


61.9 47.0 


36.3 


40.5 


50.1 


1890 


. 29.8 


32.7 


32.0 


52.8 


58.4 


75.9 76.1 


70.2 


61.1 51.7 


41.1 


30.8 


51.0 


1891... 


. 29.2 


28.7 


31.3 


53.1 


58.9 


70.6 69.6 


69.1 


67.5 51.4 


34.7 


35.5 


50.0 


1892 


. 18.4 


32.0 


34.4 


48.0 


57.4 


71.2 73.8 


72.8 


62.9 55.5 


34.5 


25.5 


48.9 


1893 


. 13.3 


23.0 


36.4 


48.8 


58.2 


72.7 77.9 


71.0 


66.0 53.0 


36.2 


27.4 


48.7 


1894 


. 27.5 


24.2 


44.0 


56.4 


60.9 


74.2 75.4 


72.0 


65.0 52.3 


34.7 


31.5 


51.5 


1895 


. 17.8 


17.2 


35.8 


52.9 


63.4 


74.5 72.7 


73.2 


67.1 45.1 


37.0 


30.3 


48.9 


1896... 


. 28.1 


27.4 


34.8 


58.1 


68.5 


70.9 74.5 


72.8 


60.7 49.0 


38.0 


33.8 


51.4 


1897 


. 22.2 


29.3 


37.0 


49.2 


58.9 


70.9 76.1 


69.4 


69.0 57.9 


38.6 


24.5 


50.2 


1898 


. 28.5 


29.1 


41.0 


49.1 


60.5 


73.3 76.0 


72.6 


68.0 50.2 


36.2 


25.2 


50.8 


1899 


. 24.4 


18.1 


31.1 


53.0 


63.3 


72 . 7 74 . 1 


74.9 


62.6 57.2 


44.7 


26.8 


50.2 


1900 


. 28.6 


21.7 


31.7 


51.8 


63.6 


70.7 74.7 


78.1 


66.2 59.4 


38.2 


29.3 


51.2 


1901 


. 26.8 


26.6 


36.0 


49.9 


61.1 


74.1 81.1 


73.7 


64.6 54.3 


36.8 


24.6 


50.8 


1902 


. 26.1 


21.1 


41.4 


50.0 


66.6 


67.8 74.4 


70.3 


61.5 55.1 


47.6 


27.4 


50.8 


1903 


. 26.1 


26.7 


44.1 


50.0 


65.2 


67.1 75.9 


71.4 


64.5 52.7 


35.9 


21.2 


50.1 


1904 


. 18.2 


20.0 


36.4 


45.4 


62.9 


70.4 72.9 


69.1 


65.4 51.8 


41.3 


28.0 


48.5 


1905 


. 18.8 


15.2 


43.9 


50.5 


61.6 


71.2 72.0 


74.4 


67.6 52.3 


40.0 


29.8 


50.0 


1906... 


. 30.2 


27.0 


29.3 


54.2 


63.0 


69.3 72.6 


75.4 


69.7 52.8 


39.5 


30.6 


51.1 


1907 


. 28.0 


28.3 


45.6 


43.4 


55.1 


66.9 74.2 


71.9 


64.4 51.4 


38.3 


32.6 


50.0 


1908 


. 26.8 


27.0 


42.3 


51.0 


62.0 


69.4 74.2 


72.6 


69.0 54.1 


41.8 


29.4 


51.6 


1909 


. 26.3 


31.8 


36.8 


48.4 


59.2 


71.2 71.4 


77.0 


64.0 49.8 


48.0 


19.2 


50.3 


1910 


. 24.3 


23.8 


49.8 


52.0 


56.4 


69.8 75.4 


72.2 


65.4 56.6 


35.2 


25.4 


50.5 


1911... 


. 27.4 


32.2 


40.2 


48.4 


68.2 


75.5 75.0 


72.0 


67.8 51.4 


33.3 


33.0 


52.0 


1912 


. 11.0 


20.8 


28.4 


51.5 


64.2 


68.4 74.8 


72.4 


67.0 54.8 


41.8 


32.7 


49.0 


1913 


. 27.8 


24.4 


35.4 


51.7 


62.4 


73.2 78.5 


77.8 


66.8 52.0 


47.2 


35.7 


52.7 


1914 


. 32.2 


19.3 


36.8 


51.2 


65.0 


74.2 78.8 


75.4 


66.2 57.2 


43.4 


20.8 


51.7 


1915 


. 21.0 


35.4 


34.1 


58.8 


58.6 


67.8 71.9 


67.2 


67.8 55.6 


43.8 


27.8 


50.8 



154 BULLETIN NO. 532 [April, 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, 


Peoria county, 


concluded 


1916... 


. . 27.2 


24.4 


37.4 


49.8 


61.4 65.8 81.0 


76.0 


63.6 


54.2 


42.4 


25.2 


50.7 


1917 


24 4 


20 8 


40.0 


47.4 


55.6 67.7 75 


70 8 


63.7 


44 2 


41 8 


19 8 


47 6 


1918 


. 10.4 


27.9 


45.6 


45.8 


66.4 71.4 72.8 


77.5 


58.2 


56.2 


41.9 


36.6 


50.9 


1919 


29 2 


30 8 


40 8 


51 3 


58 2 74 8 78 4 


71 9 


68 2 


55 8 


37 9 


20 6 


51 5 


1920 


. 18.6 


27.6 


41.5 


44.2 


60.8 72.0 73.6 


72.2 


68.5 


60.2 


38.6 


30.8 


50.7 


1921 


32 2 


34 4 


47 3 


54 3 


65 1 76 8 79 8 


73 8 


70 


55 6 


39 9 


32 2 




1922 


23 8 


29 9 


41.2 


52.5 


65 . 6 73 . 2 74 . 7 


74 5 


69 6 


58.0 


43.2 


28 8 


52 9 


1923 


. 31.8 


23.2 


34.2 


49.4 


61.0 73.0 77.6 


73.4 


65.4 


50.4 


42.2 


38 


51 6 


1924 


. 19.0 


28.0 


34.8 


53.5 


55.5 69.2 71.0 


72.7 


60.4 


59.2 


41.2 


21.8 


48.9 


1925 


. 23 5 


33 1 


41.1 


57.8 


57 . 8 73 . 4 74 . 9 


73.9 


71.6 


43.4 


37.7 


24 8 


51 1 


1926 


. 26.9 


33.4 


32.0 


44.0 


64.0 67.2 75.8 


74.4 


65.6 


52.5 


36.2 


26.8 


49.9 


1927 


. 23.4 


36.1 


43.2 


50.8 


60.0 67.2 73.7 


68.5 


70.0 


58.0 


43.3 


25.9 


51.7 


1928 


. 26.5 


32.3 


40.4 


47.6 


63 . 3 66 . 75 . 6 


74.8 


61.2 


57.0 


41.7 


32.0 


51.5 


1929 


17 8 


21 2 


45 4 


53 6 


59 4 68 6 75 3 


71 6 


75 2 


53 


35 8 


28 2 


49 6 


1930 


17 


38.4 


38.8 


55 


63.3 71 6 78 2 


76 1 


69 8 


53 


42 4 


29 8 


52 8 


1931... 


. 32.6 


36.7 


36.7 


52.6 


58.2 75.7 79.2 


74.0 


73.0 


59.2 


50.2 


38.6 


55.6 


1932 


33 2 


36 8 


31 8 


51 4 


63 7 73 4 76 7 


74 2 


64 8 


52 8 


36 


27 8 


51 9 


1933 


. 37.6 


26.8 


39.4 


50.9 


62.8 78.9 78.5 


73.0 


72.6 


51.8 


39.6 


32.6 


53 7 


1934 


. 31.6 


23.8 


34.1 


51.6 


68.7 79.2 81.0 


74.4 


63.8 


57.4 


46.0 


26.0 


53.1 


1935 


26 2 


31 4 


44 3 


48 4 


55 8 67 4 79 2 


74.8 


65 8 


54 4 


38 6 


23 2 


50 8 


1936 


. 17.2 


14.8 


41.9 


48.2 


67.0 72.0 84.3 


80.3 


70.5 


54.2 


37.8 


33.8 


51.8 


1937 


23 8 


27 8 


36 2 


49 7 


63 2 70 8 75 8 


78 3 


65 8 


52 2 


36 7 


26 7 


50 6 


1938 


26 2 


36 2 


47 4 


53 3 


62 2 69.9 76.6 


77 2 


68.1 


60.3 


43.0 


30 


54 2 


1939 


. 32.2 


27.6 


41.0 


47.7 


66 . 2 73 . 76 . 2 


73.2 


71.7 


57.1 


41.2 


33.9 


53.4 


1940 


13 3 


29 4 


35 9 


49 8 


58 9 73 4 77 4 


74 8 


66 6 


59 


38 2 


34 


50 9 


1941 


. 28.4 


25.7 


35.4 


56.0 


66.8 73.4 77.0 


76.2 


69.7 


58.1 


43.2 


36.7 


53.9 


1942 


. 25.6 


26.8 


42.0 


56.1 


61.9 71.9 76.3 


73.4 


64.8 


55.2 


41.4 


24.6 


51.7 


1943 


24 3 


30 6 


35 4 


48 8 


58 8 73 2 76 1 


75 6 


61 9 


53 8 


36 4 


26 2 


50 1 


1944 


. 31 


29.4 


34.4 


47.4 


66 . 4 74 . 2 74 . 8 


73.8 


66.2 


54.4 


43.0 


22.2 


51.4 


1945 


. 19.8 


29.6 


49.4 


51.6 


55.6 66.4 72.4 


74.0 


65.4 


51.5 


39.6 


21.6 


49.7 


1946 


. 27 2 


30 8 


50 1 


54 2 


58.2 70.4 76 1 


69.9 


65.8 


59.0 


42.8 


33.0 


53.1 




. 24.3 


28.0 


38.1 


50.8 


61.7 71.3 75.7 


73.4 


65.8 


53.3 


39.5 


28.4 


50.9 


























SPRINGFIELD, Sangamon county 


1879... 










. 80.5 


73.6 


62.5 


62.4 


44.8 


32.2 




1880 


. 44 2 


38 1 


42.1 


56 


68 4 73 8 76 8 


77 


64 6 


53 8 


32.3 


27 


54 2 


1881 . . . 


. 22.0 


29.7 


36.4 


48.6 


69.4 72.0 79.0 


79.1 


73.0 


59.4 


42.2 


40.4 


'54.3 


1882 


31 8 


43 2 


45 


55 6 


57 9 71 4 72 5 


73 6 


66 


59.5 


44 8 


31 


54.4' 


1883 


. 21.2 


29 6 


38 8 


54.6 


60 . 4 69 . 4 75 . 1 


70.6 


63.4 


53.1 


44.6 


35.3 


51.3 


1884 


. 21.2 


32.8 


40.2 


51.9 


61.8 71.4 74.9 


72.6 


71.8 


60.4 


44.9 


29.6 


52.8 


1885 


. 20.3 


21.4 


37.4 


51.7 


61.6 71.1 78.3 


71.2 


65.0 


53.6 


46.8 


36.5 


51.3 


1886 


. 23.6 


32.1 


41.9 


55.8 


65.0 71.3 77.5 


76.6 


68.0 


58.2 


43.1 


27.2 


53.4 


1887 


. 23.8 


35.4 


40.6 


54.7 


67.4 73.0 79.9 


74.4 


66.2 


50.6 


41.5 


28.0 


53.0 


1888 


. 17.9 


27.7 


35.8 


53.6 


59.1 70.2 76.4 


71.4 


63.0 


50.9 


42.0 


34.2 


50.2 


1889 


. 30.7 


25.4 


43.3 


54.1 


60.8 67.7 74.7 


72.3 


64.4 


51.0 


38.2 


44.4 


52.2 


1890 


. 33.3 


35.8 


34.2 


54.0 


60.0 76.0 75.9 


71.0 


62.7 


54.4 


45.2 


34.0 


53.0 


1891 


. 32.4 


31.4 


33.8 


54.9 


60.6 73.2 71.0 


71.5 


70.8 


54.4 


37.1 


38.2 


52.4 


1892 


. 20.8 


34.8 


36.8 


49.8 


59.0 73.0 74.2 


74.4 


66.4 


56.9 


37.2 


28.4 


51.0 


1893 


. 16.8 


25.2 


39.0 


51.3 


59.9 72.8 78.0 


72.9 


69.2 


55.8 


40.0 


30.3 


50.9 


1894 


. 29.4 


26.2 


46.6 


54.0 


62.4 75.2 76.5 


74.8 


67.5 


55.8 


37.8 


35.2 


53.4 


1895 


.21.5 


19.6 


39.4 


54.9 


63.8 74.6 73.4 


75.3 


70.6 


49.5 


39.6 


33.6 


51.3 


1896 


. 30.4 


32.0 


36.2 


60.0 


70.0 72.2 75.2 


75.0 


64.1 


52.6 


41.0 


36.2 


53.7 


1897 


. 25.2 


31.8 


41.0 


50.6 


59.9 71.8 77.5 


72.4 


73.2 


62.4 


41.2 


28.0 


52.9 


1898 


. 32.2 


32.4 


43.9 


50.6 


62.6 74.3 76.2 


74.6 


70.0 


52.4 


38.2 


27.6 


52.9 


1899 


.27.2 


19.0 


34.0 


54.5 


64.6 73.8 76.2 


76.7 


65.4 


60.4 


47.7 


30.6 


52.5 


1900 


33.5 


25.3 


36.6 


54.7 


65.0 71.9 76.0 


80.2 


69.6 


62.9 


42.2 


32.4 


54.2 



Data since May, 1943, are from the Peoria Municipal Airport. 



1949] CLIMATE OF ILLINOIS: APPENDIX A 155 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SPRINGFIELD, Sangamon county, 


concluded 


1901 


. 31.0 


24.3 


39.8 


50.8 62.3 


75.6 82.8 


75.8 


67.4 


57.9 


39.4 


25.5 


52.7 


1902 


. 27.8 


20.6 


42.8 


50.7 67.9 


69.4 76.7 


72.1 


62.5 


58.0 


49.0 


28.6 


52.2 


1903 


. 27.2 


28.2 


45.4 


53 . 2 65 . 4 


67 . 76 . 6 


73.1 


66.4 


56 2 


38 3 


24 6 


51 8 


1904 


. 21.0 


23.9 


39.8 


46.8 62.1 


69.5 73.4 


71.2 


67.2 


55.6 


44.2 


30.2 


50.4 


1905 


20.4 


18.6 


46 6 


52 6 63 2 


73 . 5 74 . 1 


75.8 


68 7 


54 3 


42 8 


31 7 


51 9 


1906... 


. 33.1 


29.1 


30.6 


56.4 64.8 


71.2 75.4 


77.0 


71.9 


54.8 


41.4 


33.0 


53.2 


1907 


32 2 


31 4 


49 1 


45 57.2 


69 . 6 77 . 4 


74 


67 3 


53 8 


41 5 


34 4 


52 7 


1908 


. 29.8 


29 7 


45.5 


53 . 1 64 . 6 


71.8 76.4 


75.2 


70.2 


55.2 


44.6 


33.7 


54 2 


1909 


.29.1 


34.7 


40.2 


51.6 61.6 


73.0 73.6 


78.4 


65.2 


51.9 


50.4 


22.0 


52.6 


1910 


. 28.0 


26 2 


52.8 


53.6 58.8 


71.8 76 4 


73.8 


67 6 


58 2 


38 


28 4 


52 8 


1911 


. 30.9 


35.5 


42.6 


51.4 70.1 


77.9 77.2 


73.6 


70.0 


54.4 


36.0 


34.8 


54.5 


1912 


. 15.2 


24.1 


32.1 


54.6 66.4 


69.8 77.2 


74.2 


68.2 


57.1 


43.4 


34.6 


51.4 


1913 


. 30.6 


26.8 


37.9 


53.6 65.0 


76 . 2 80 . 


79.9 


67.8 


53.6 


49.2 


37.8 


54 9 


1914 


35 4 


21 3 


39 2 


54 67 2 


77 3 81 


77 2 


67 7 


58 1 


46 2 


24 2 


54 1 


1915 


24 7 


37 8 


35 8 


60 60 5 


69.6 74 


68 4 


69.2 


57.7 


46 


30.4 


52 8 


1916 


. 29.6 


27.2 


39.8 


51.6 64.6 


68.3 83.0 


77.3 


65.7 


55.4 


44.6 


28.6 


53.0 


1917 


. 29.0 


24.6 


42.6 


50.0 58.3 


69.7 76.7 


72.4 


65.2 


47.4 


43.8 


22.6 


50.2 


118 


. 13.6 


30.8 


48.9 


47.8 68.6 


73.8 75.0 


80.1 


60.4 


58.4 


43.2 


39.2 


53.8 


1919 


. 32.8 


32.9 


42.9 


54.0 60.5 


76.0 79.8 


74.0 


70.5 


57.8 


40.6 


24.2 


53.5 


1920 


23 


30 4 


43 


46 7 62 2 


72 8 76 2 


72 9 


69 5 


60 6 


40 


32 6 


52 3 


1921... 


. 34.4 


37.5 


49.6 


55.6 66.8 


77.6 81.2 


74.8 


72.0 


56.8 


43.0 


34.7 


57.0 


1922 


. 25.2 


32.4 


43.2 


54.6 67.0 


75.4 76.4 


76.6 


70.9 


59.2 


45.2 


32.0 


54.8 


1923 


. 34 6 


26.2 


37.4 


51 8 62.3 


74.2 78 8 


75.0 


66.4 


52.0 


44.2 


40.6 


53 6 


1924 


. 21.8 


31.0 


36.8 


55.9 57.4 


71.1 73.2 


75.4 


62.2 


61.0 


43.2 


25.6 


51.2 


1925 


. 27.2 


36.4 


43.8 


59.4 61.0 


76.0 77.0 


75.5 


74.2 


46.0 


39.5 


28.0 


53.7 


1926 


. 29.8 


35.6 


35.0 


46.4 66.0 


69.2 77.8 


76.7 


67.8 


55.3 


37.4 


29.6 


52.2 


1927 


. 26.4 


39.0 


45.0 


53.0 61.8 


68.9 75.8 


69.6 


71.6 


59.8 


45.2 


28.4 


53.7 


1928 


29 6 


34 1 


42 2 


49 3 64 


67 4 77.8 


76.3 


64.0 


58.6 


43.0 


34.6 


53.4 


1929 


. 21.2 


23.8 


47.2 


54.6 59.0 


69.3 76.6 


72.6 


65.4 


54.6 


37.2 


30.4 


51.0 


1930....... 


. 19.6 


40.4 


39.2 


56.7 64.0 


71.8 79.4 


77.0 


69.9 


53.9 


44.4 


32.2 


54.0 


1931 


. 34.4 


38.6 


37.8 


54 . 9 60 . 6 


77.4 81.2 


75.6 


74.8 


60.7 


52.0 


41.0 


57.4 


1932 


. 36.0 


40.2 


35.0 


54.4 66.4 


75.2 79.0 


76.2 


67.5 


55.2 


37.0 


30.6 


54.4 


1933 


. 39 6 


30 8 


41 9 


53 4 65 2 


80 7 80 4 


75.2 


75.4 


54.7 


42.1 


36.0 


56.3 


1934 


. 34.0 


27.1 


36.4 


54.6 69.7 


81.4 83.4 


77.0 


65.2 


60.1 


48.0 


29.6 


55.5 


1935 


. 29.8 


34.6 


48.0 


50.2 58.8 


69.9 81.4 


77.4 


68.8 


56.8 


40.8 


26.2 


53.6 


1936... 


. 21.2 


19.7 


45.0 


50.4 69.2 


74.2 86.2 


82.5 


72.8 


56.6 


40.0 


35.8 


54.5 


1937 


. 27.3 


30.4 


39.0 


52.6 65.4 


73.4 78.0 


79.5 


67.6 


54.4 


38.8 


29.2 


53.0 


1938 


. 29.2 


39.1 


50.5 


55.4 64.0 


72.8 80.2 


79.4 


71.9 


62.6 


45.4 


32.7 


56.9 


1939 


. 35.4 


30.6 


44.2 


50.7 68.0 


75.3 79.0 


75.3 


74.3 


59.6 


43.4 


36.2 


56.0 


1940 


. 14.5 


31.0 


39.5 


51.4 61.4 


75.7 78.8 


76.7 


68.8 


62.6 


41.1 


36.4 


53.2 


1941 . . . 


. 30.9 


29.1 


38.0 


58.3 69.4 


76.1 78.8 


78.0 


71.4 


60.9 


44.8 


38.6 


56.2 


1942 


. 29.0 


29.9 


44.4 


58.4 64.5 


73.9 78.8 


75.5 


67.6 


57.4 


45.3 


28.0 


54.4 


1943 


. 27.6 


35.4 


38.0 


51.9 62.2 


76.8 79.8 


79.0 


65.2 


56.8 


40.4 


28.6 


53.5 


1944 


. 33.6 


33.8 


38.1 


50.8 69.8 


78.3 79.0 


77.0 


69.2 


58.4 


45.2 


25.6 


54.9 


1945 


. 24.4 


33.3 


52.3 


54.7 59.4 


69.5 76.0 


76.0 


67.8 


55.8 


43.0 


25.2 


53.1 


1946 


. 31.2 


35.4 


54.6 


57.4 61.2 


74.6 78.2 


72.2 


68.6 


62.0 


46.1 


36.9 


56.5 


Aver 


.27.6 


30.5 


41.2 


53.1 63.5 


72 . 8 77 . 5 


75.1 


68.0 


56.4 


42.5 


31.7 


53 3 










URBANA, 


Champaign 


county 


1889... 


. 29.3 


23.4 


39.9 


51.9 59.2 


65.5 72.7 


69.2 


61.3 


47.3 


36.8 


42.7 


49.9 


1890 


. 33.5 


34.7 


33.4 


52.3 58.3 


74.6 73.0 


68.7 


60.5 


52.1 


42.6 


30.9 


51.2 


1891... 


. 30.3 


30.5 


32.6 


52.8 58.4 


71.9 70.1 


70.2 


69.2 


51.3 


35.7 


37.0 


50.8 


1892 


. 19.2 


33.0 


36.1 


48.6 57.9 


70.6 73.3 


71.5 


63.9 


53.6 


34.8 


27.7 


49.1 


1893 


. 14.8 


25.8 


37.8 


49.3 57.4 


70.5 76.4 


71.1 


66.5 


53.3 


37.3 


30.0 


49.1 


1894 


. 29.4 


24.7 


43.5 


51.4 59.6 


73.4 73.8 


72.3 


65.0 


51.9 


35.9 


32.9 


51.1 


1895 


. 29.2 


23.3 


35.9 


52.3 59.4 


73.3 71.3 


73.2 


61.3 


47.2 


36.8 


42.7 


55.1 


1896... 


. 28.1 


29.6 


34.4 


57.6 68.2 


70.2 73.8 


72.0 


61.9 


48.8 


39.9 


33.3 


51.4 


1897 


. 22.0 


30.0 


40.0 


48.0 58.0 


69.5 75.8 


70.0 


69.4 


59.1 


39.5 


26.3 


50.6 


1898 


. 30.8 


30.3 


39.4 


48.5 61.5 


73.6 76.9 


74.0 


68.2 


51.4 


36.1 


26.8 


51.5 


1899 


. 25.5 


18.4 


32.4 


53.1 63.8 


71.4 74.4 


75.3 


63.1 


57.2 


43.8 


27.8 


50.5 


1900 


. 30.1 


24.0 


32.6 


51.2 63.3 


69.3 74.2 


78.4 


68.2 


59.9 


39.6 


29.9 


51.7 



156 BULLETIN NO. 532 [April, 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. Oct. 


Nov. 


Dec. Annual 


URBANA, Champaign 


county, concluded 


1901... 


. . 27.8 


21.0 


37.6 


48.5 


59.2 


72.2 


79.5 


73.8 


64.6 53.5 


35.8 


24.2 49.8 


1902 


... 25 7 


16 8 


40.8 


48.1 


65.8 


68.4 


74.6 


69.4 


61.7 54.5 


46.6 


27 . 49 . 9 


1903 


... 23.8 


25.6 


44.2 


50.8 


64.0 


65.5 


74.8 


71.6 


65.6 54.2 


36.1 


22.2 49.8 


1904 


17 9 


21 7 


38 4 


45 2 


61 2 


68 8 


72.5 


70 3 


66 1 53 


42.2 


27 7 48 7 


1905 


... 19 2 


16.8 


44 


50.6 


62.6 


71.1 


72.9 


74.7 


67 . 4 52 . 3 


39.5 


29.8 50.0 


1906 


32 3 


27 4 


29 


54 1 


62 2 


68 9 


73 2 


75.3 


69 1 53.1 


40 2 


32 6 51 4 


1907 


. 31 


28 9 


46 6 


42". 6 


54 4 


66.7 


74.2 


71.2 


65.0 51.4 


37.8 


32 . 1 50 . 2 


1908 


... 28.8 


27.2 


43.0 


50.3 


61.8 


69.2 


73.9 


72.8 


69.1 54.0 


42.4 


32.0 52.0 


1909 


. . . 28.4 


32.9 


38.1 


49.2 


58.8 


70.2 


71.0 


75.4 


63.4 49.0 


49.8 


20.2 50.5 


1910 


. . 27 


25 2 


50 3 


52 


57 


69 6 


74.8 


71.0 


65.9 57.0 


36 6 


25.6 51.0 


1911... 


... 29.4 


33.7 


39.6 


48.5 


67.4 


74.4 


75.3 


73.0 


67.8 53.6 


35.0 


33.4 52.5 


1912 


13 8 


21 5 


30 4 


52 3 


63 8 


67.4 


74 2 


71.4 


67.6 56.1 


41.8 


33.2 49 4 


1913 


... 30 8 


24.3 


37.0 


51.4 


63.0 


72.5 


78.2 


77.5 


69 . 6 52 . 8 


47.5 


36 . 3 53 . 4 


1914 


... 33.6 


20.4 


37.1 


51.7 


67.5 


77.6 


80.5 


76.4 


65.5 57.3 


44.1 


22.1 52.8 


1915 


23 7 


35 9 


35 4 


59 3 


60 5 


70 6 


74 1 


67.4 


67.9 56 3 


44 2 


29 52 


1916... 


.. 29.7 


26.6 


37.4 


50.6 


64.0 


67.9 


82.3 


78.2 


65.2 54.4 


43.4 


27.6 52.3 


1917 


... 28 . 6 


23.6 


41.4 


47.6 


55.4 


67.0 


73.3 


70.3 


62.8 45.6 


42.8 


21.4 48.3 


1918 


11 6 


30 


46 7 


45 7 


65 2 


69 8 


71.6 


77.0 


58.6 57.0 


42 


38.0 51.1 


1919 


. . . 31.2 


31.4 


41.8 


51.7 


59.3 


73.8 


77.5 


71.6 


69 . 57 . 9 


39.5 


23 . 8 52 . 4 


1920 


. . . 20.1 


28.8 


40.6 


44.8 


59.9 


71.2 


73.3 


71.1 


68.3 59.6 


40.0 


31.0 50.7 


1921 


. 33 2 


35 4 


48.9 


53 9 


64.1 


75.5 


79.8 


72.0 


69.9 54.6 


42.2 


33 . 5 55 . 2 


1922 


... 24.0 


31.8 


42.3 


52.4 


65.2 


72.9 


74.0 


73.9 


69.4 57.8 


43.0 


30.9 53.1 


1923 


... 32 . 2 


24.4 


36.2 


49.5 


59.8 


71.8 


75.6 


72.0 


65.2 51.1 


42.6 


39.8 51.7 


1924 


20 1 


29 1 


35 4 


52 8 


55 4 


68 4 


71 6 


73.0 


61.0 59.6 


42.0 


24 49.4 


1925 


... 24.5 


35.3 


42.2 


57.3 


58.9 


74.3 


75.4 


73.4 


72.2 45.2 


38.6 


27.0 52.0 


1926 


27 4 


33 4 


33 2 


44 6 


64 2 


67 2 


75 9 


75 2 


66 4 53.3 


37.2 


27 . 8 50 . 5 


1927 


25 2 


37 8 


43 4 


51 7 


60 1 


66.4 


73.4 


67.4 


70 . 58 . 8 


45.0 


28.2 52.3 


1928 


... 27.5 


32.2 


39.6 


46.8 


61.8 


65.4 


74.8 


74.0 


61.8 57.2 


42.4 


33.4 51.4 


1929 


21 4 


23 4 


46 4 


54 1 


58 6 


68 6 


75 


70 6 


64 9 53 


36 6 


28 7 50.1 


1930 


20 8 


39 3 


38 6 


54 6 


63 4 


70 7 


78 2 


76 


68.9 52.8 


42.2 


31.0 53.0 


1931... 


... 32.4 


37.2 


35.8 


52.5 


58.9 


73.9 


78.2 


74.5 


72.0 59.0 


50.2 


39.2 55.3 


1932 


. . . 35.8 


37.7 


33.0 


52.5 


63.2 


72.9 


76.7 


74.2 


65.6 54.2 


35.6 


29.4 52.6 


1933 


. . 37 7 


28 8 


39 9 


51 6 


63 4 


77 8 


78 2 


73.0 


72.2 53.0 


40.4 


34 . 2 54 . 2 


1934 


... 32.8 


24.6 


35.2 


51.9 


67.4 


78.5 


80.7 


73.9 


64.5 57.9 


45.9 


27.7 53.4 


1935 


... 29.0 


33.0 


46.6 


48.8 


56.3 


67.7 


77.7 


74.5 


66.2 55.2 


40.4 


24.9 51.7 


1936 . 


... 19.9 


19.0 


43.0 


47 6 


65.4 


71.9 


83.0 


79.0 


70.0 54.7 


38.5 


34.0 52.2 


1937 


.. . 28.4 


28.5 


37.4 


50.4 


62.8 


70.4 


74.3 


76.5 


65.4 52.0 


38.0 


27.8 51.0 


1938 


27 6 


37 7 


47 6 


53 3 


61 6 


69 9 


76 


75 7 


68.6 59.9 


43.8 


31.3 54.4 


1939 


... 33.4 


30.2 


42.0 


47.7 


65.4 


73.0 


75.4 


72.6 


71.6 56.8 


41.5 


34.6 53.7 


1940 


... 14.2 


30.5 


37.0 


49.4 


58.5 


72.6 


76.0 


74.8 


66.0 60.0 


39.6 


35.6 51.2 


1941... 


.. 29.8 


27.2 


36.1 


56.4 


66.0 


72.8 


75.1 


74.4 


69.4 58.6 


43.7 


37.4 53.9 


1942 


... 27.8 


27.4 


43.2 


55.6 


62.4 


71.6 


76.3 


72.6 


65.0 55.8 


44.2 


25.0 52.2 


1943 


. . . 28.0 


33.3 


36.6 


49.8 


60.8 


74.8 


77.4 


75.8 


63.0 55.4 


38.2 


28.2 51.8 


1944 


. . 33 2 


32 2 


36 4 


49 8 


67 2 


75 8 


75 6 


74.0 


66 . 9 55 . 4 


43.8 


24 . 2 52 . 9 


1945 


... 22.9 


32.6 


51.2 


52.4 


57.4 


67.9 


73.2 


73.0 


66.7 53.0 


41.7 


23.4 51. 3 


1946 


28 8 


33 3 


51 8 


54 6 


58 8 


71 3 


74.8 


70.1 


66.8 60.4 


45.4 


36.0 54.4 


Aver 


26.8 


28.7 


39.6 


50.9 


61.5 


71.6 


75.3 


73.1 


66.4 54.5 


40.8 


30.2 51.6 


CAIRO, Alexander county 


1872... 






42.9 


61.8 


69.3 


76.1 


80.6 


81.3 


71.4 58.7 


41.0 


28.8 


1873 


.. 30.0 


37.6 


46.3 


55.3 


67.2 


78.0 


78.6 


78.4 


68.2 54.4 


44.6 


40.8 56.6 


1874 


... 39.6 


40.2 


47.4 


51.5 


70.5 


79.6 


81.1 


79.4 


72.4 58.8 


47.2 


40.1 59.0 


1875 


... 28.2 


32.2 


44.8 


54.8 


65.8 


74.5 


79.5 


74.2 


68.3 55.8 


46.0 


45.5 55.8 


1876 


... 44.0 


42.8 


42.7 


59.5 


68.2 


74.5 


80.3 


78.7 


69.4 56.8 


43.7 


26.4 57.3 


1877 


... 33.4 


43.5 


43.5 


57.2 


65.4 


75.1 


78.3 


76.5 


70.0 61.2 


45.5 


49.8 58.3 


1878 


... 39.2 


43.7 


57.1 


63.2 


67.4 


73.0 


81.7 


80.2 


69.5 58.7 


49.0 


32.3 59.6 


1879 


... 33.8 


37.6 


51.6 


57.6 


70.4 


74.1 


81.4 


75.0 


66.2 65.1 


51.7 


40.8 58.8 


1880 


... 50.7 


44.8 


49.0 


61.8 


71.7 


76.0 


78.4 


78.2 


67.0 57.7 


36.8 


32.0 58.7 



1949] CLIMATE OF ILLINOIS: APPENDIX A 157 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. 


Sept. 


Oct. Nov. 


Dec. 


Annual 


CAIRO, Alexander county, 


continued 


1881 


. 33.2 


37.8 


45.0 


55.2 72.4 


75.6 


82.2 


83.0 


70.6 


65.4 46.9 


45.4 


59.4 


1882 


. 37.9 


48.9 


52.2 


60.8 64.0 


76.3 


76.2 


75.4 


69.7 


65.2 49.3 


37.2 


59.4 


1883 


32 


38 5 


44 3 


59 8 65 2 


75 6 


77 8 


74 9 


68 4 


60 4 50 4 


42 6 


57.5 


1884 


. 27.3 


41.6 


47.8 


56 . 4 66 . 6 


74.2 


78.1 


75.5 


74 A 


63 . 9 49 . 6 


36.4 


57.6 


1885 


. 30.0 


32.0 


43.1 


60.6 66.2 


74.5 


80.2 


77.0 


69.6 


56.6 47.8 


38.5 


56.3 


1886 


. 24.9 


34.8 


44.8 


58.2 69.1 


72.6 


78.5 


77.7 


71.6 


60.2 45.4 


31.2 


55.8 


1887 


. 33.1 


42.8 


48.0 


59.7 70.6 


74.6 


80.6 


78.2 


71.6 


56.6 46.5 


36.9 


58.3 


1888 


. 32 


32 6 


44 8 


61 9 64 4 


73 4 


80 


76 


67 4 


55 8 46 7 


39.4 


56 2 


1889 


. 38.0 


35.6 


50.0 


59 . 6 65 . 8 


70.8 


77.4 


75.1 


67.0 


56.6 44.2 


54.0 


57.8 


1890 


. 44.6 


44.6 


42.9 


59.2 66.0 


79.4 


79.0 


75.0 


66.5 


58.0 51.0 


40.0 


58.8 


1891 


. 38.5 


41.7 


42.8 


60.4 64 4 


77.2 


74.8 


74.4 


72.8 


58.0 44.4 


45.6 


57.9 


1892 


. 29.3 


44.6 


44.0 


58.2 66.0 


76.7 


76.7 


76.2 


70.0 


60 . 44 . 2 


36.0 


56.8 


1893 


. 29 4 


36 4 


47 2 


60 2 65 


74 8 


80 1 


76 5 


71 2 


57 9 46 1 


40 


57 1 


1894 


. 40.0 


35.8 


52 4 


59.4 65 7 


76 7 


77.0 


78 


71.5 


60.2 45.4 


40.8 


58.6 


1895 


. 31.4 


28.4 


46.9 


60.3 66.4 


77.2 


76.0 


78.1 


74.5 


54.6 46.6 


40.0 


56.7 


1896 


. 37 8 


39 4 


43 


65 8 72 9 


74 4 


79.6 


79.1 


69.4 


58 3 50.1 


42.9 


59.4 


1897 


. 34.7 


41.0 


50.6 


57 . 8 64 . 6 


75.4 


80.0 


77.6 


75.8 


66 . 49 . 5 


36.8 


59.2 


1898 


. 41.6 


40.4 


51.2 


55.6 69.3 


78.0 


78.4 


78.0 


74.2 


57.6 45.2 


36.3 


58.8 


1899 . . . 


34 8 


27 


44 4 


58 4 70 5 


76 6 


77 8 


81 


70.1 


63 8 52.8 


36.4 


57.8 


1900 


. 39.8 


34.4 


46.2 


59.2 68.6 


74.5 


78.8 


81.9 


75.8 


65 . 6 49 . 2 


41.0 


59.6 


1901 


39 8 


34 2 


46 8 


54 6 66 


78 6 


83 4 


77 


70 9 


61.4 46 2 


32 6 


57.6 


1902 


. 34 8 


28.8 


49.2 


57 2 73 


75.7 


80.1 


77.4 


67.4 


62 . 4 54 . 6 


37.0 


58.1 


1903 


. 36.6 


37.5 


52.0 


58.1 68.6 


69.8 


79.4 


77.4 


71.1 


60.0 44.5 


34.0 


57.4 


1904 


. 33.6 


36.2 


49.1 


52.6 67.0 


74.5 


76.3 


76.0 


72.4 


59.0 48.6 


38.9 


57.0 


1905 .... 


. 27 8 


28 2 


53 3 


58 2 69 6 


76 6 


75.8 


78 2 


72.7 


59 . 3 49 . 8 


37.6 


57.3 


1906 


. 40.3 


35.8 


39.2 


62.0 68.1 


74.8 


76.7 


77.9 


74.8 


58.2 46.5 


40.2 


57.9 


1907 


43 4 


38 8 


57 4 


50 8 61 8 


73 4 


80 2 


77 8 


70 6 


58.4 46 9 


40.8 


58.4 


1908 .... 


. 36.8 


39.0 


53.6 


59 2 69 


75.2 


78.6 


78.2 


73.3 


58.8 50.8 


42.1 


59.6 


1909 


. 37.4 


43.8 


47.6 


57.6 65.4 


76.8 


79.0 


81.0 


69.6 


59.5 57.3 


31.0 


58.8 


1910 


. 36 3 


34 4 


58 8 


57 5 63 9 


72 5 


78 3 


76 6 


73 5 


61 4 45 2 


35 2 


57.8 


1911... 


. 41.0 


43.1 


50.4 


57.9 72.4 


79.3 


78.4 


76.6 


76.7 


60 . 3 42 . 6 


41.8 


60.0 


1912 


26 6 


32 


42 


59 68 7 


71 5 


79 4 


76 4 


72 7 


62 48 5 


39 4 


56 5 


1913 


. 40 2 


36 6 


46 6 


57 8 68 5 


78 3 


80.4 


81 1 


70.9 


57 . 2 54 . 1 


41.6 


59.4 


1914 


. 41.6 


33.4 


44.6 


58.0 69.2 


81.7 


83.2 


78.6 


70.7 


61.5 51.1 


32.4 


58.8 


1915 


. 34.1 


42.7 


40.4 


63.6 68.0 


74.4 


78.1 


72.6 


73.8 


63.2 52.4 


39.3 


58.6 


1916 .. 


. 40.0 


37.2 


46.5 


56 5 70.3 


73.1 


82.2 


79.4 


69.6 


60.6 50.7 


37.7 


58.6 


1917 


. 39.2 


35.6 


49.4 


58.0 61.8 


74.2 


78.0 


76.1 


70.6 


53.6 48.2 


28.7 


56.1 


1918 


21 


40 4 


53 8 


54 8 71 2 


77 4 


78 


81 6 


64 1 


62 8 47 8 


45 8 


58.2 


1919 


. 39.4 


39.6 


49.2 


59.6 64.9 


78.0 


81.4 


77.2 


73.8 


64.7 47.8 


34.0 


59.1 


1920 


. 33.2 


38.0 


47.9 


55.2 67.2 


74.5 


78.3 


75.1 


73.0 


63.9 44.5 


40.2 


57.6 


1921... 


. 41.6 


42.7 


57 ."2 


59.0 68.6 


79.2 


83.0 


77.6 


76.4 


59.2 51.2 


42.3 


61.5 


1922 


. 34.3 


40.9 


49.2 


60.8 70.4 


78.3 


78. ,6 


77.6 


74.2 


62.0 50.7 


41.4 


59.9 


1923 


43 4 


34 8 


44 7 


57 8 65 


75 4 


79 8 


78 4 


70 6 


57 2 49 1 


47.8 


58.7 


1924 


. . 30 . 6 


37.8 


42 


59 7 61 6 


75 9 


76 


78.2 


66.4 


65.3 49.6 


35.2 


56.5 


1925 


. . 36.8 


44.4 


51.8 


65.0 64.8 


80.2 


80.0 


79.2 


78.4 


53.6 47.2 


35.8 


59.8 


1926. .. 


, . 36 . 8 


43.0 


43.0 


53.9 68 8 


74.1 


80 


78 4 


74.4 


61.2 43.2 


37.2 


57.8 


1927 


. 36.4 


46.9 


50.0 


60.6 68.0 


73.1 


78.2 


73.8 


75.3 


63.5 51.9 


37.0 


59.6 


1928 .... 


. 36 6 


40 


47 6 


54 66 9 


70 8 


80 2 


78 7 


68 2 


63 4 47 7 


40 6 


57.9 


1929 


. . 33.4 


31.4 


52.9 


61.5 65.5 


74.4 


79.6 


75.8 


70.0 


59.5 44.6 


40.3 


57.4 


1930 


. . 30.6 


48.0 


46.8 


62.2 68.4 


76.1 


83.2 


79.4 


74.0 


58.6 48.6 


37.0 


59.4 


1931... 


. . 39.0 


43.8 


43.4 


58.8 64.0 


79.2 


80.9 


76.2 


77.0 


65.0 56.6 


47.8 


61.0 


1932 


. . 44.1 


48.6 


42.7 


60.3 68.4 


78.2 


81.5 


79.0 


70.2 


58.2 43.8 


37.2 


59.4 


1933 


. . 45.8 


37.8 


47.6 


58.5 70.3 


79.6 


79.4 


76.8 


77.1 


59.6 48.4 


44.5 


60.4 


1934 


, . 40.9 


34.5 


44.4 


59.4 70.9 


80.4 


83.5 


79.0 


68.6 


63.7 52.6 


37.6 


59.6 


1935 


. 38.6 


41.8 


55.2 


56.4 65.2 


72.6 


81.2 


79.6 


71.4 


61.6 47.1 


33.0 


58.6 


1936... 


. . 30.8 


31.0 


52.8 


55.0 71.6 


78.2 


82.6 


83.4 


75.6 


60.0 44.6 


42.3 


59.0 


1937 


. . 39.2 


37.4 


44.8 


58.4 69.4 


77.4 


79.2 


82.0 


70.2 


57.8 45.5 


35.9 


58.1 


1938 


. . 37.3 


47.8 


56.4 


61.0 68.8 


74.2 


80.5 


81.2 


73.2 


64.6 50.2 


39.5 


61.2 


1939 


. . 43.2 


38.8 


51.7 


55.8 69.0 


76.4 


80.4 


77.8 


77.4 


63.3 46.6 


41.7 


60.2 


1940 


. . 22.0 


36.8 


46.6 


56.6 64.8 


75.4 


77.6 


78.4 


70.9 


64.8 47.2 


43.4 


57.0 



158 BULLETIN NO. 532 [April, 

Table 4. Average Monthly and Annual Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, Alexander county, 


concluded 


1941... 


. . 38.6 


35.4 


43.0 


62.8 71.0 77.6 


81.6 


80.6 


75.2 


66.0 


48.0 


42.8 


60.2 


1942 


34 2 


36 7 


50 3 


61 3 67 4 77 4 


82.4 


77.4 


71.2 


61.6 


51.8 


37.4 


59 1 


1943 


, . 37.2 


42.6 


43.8 


58.3 69.4 79.8 


82.4 


81.8 


68.6 


59.3 


46.0 


36.1 


58.8 


1944 . 


, . 39 . 2 


43.7 


47.5 


57.9 72.2 80.2 


80.2 


79.2 


72.4 


61.6 


49.6 


33.6 


59.8 


1945 


33 7 


40 


57 4 


61.4 64 74.1 


79.0 


78.5 


72.8 


59.3 


49.6 


33.4 


58.6 


1946 


, . 38.6 


44.4 


59.1 


63.5 65.7 78.0 


80.3 


75.3 


71.8 


63.8 


52.3 


44.6 


61.4 




36 2 


38 7 


48 1 


58 6 67.7 75.9 


79.5 


77.9 


71.6 


60.4 


48.0 


38.8 


58.4 


































ST. LOUIS, 


Missouri 


1873 








51.2 64.9 77.6 


77.8 


78.3 


66.6 


52.1 


41.5 


36.2 




1874 


. 35.2 


36.1 


43.2 


47.3 68.6 78.7 


81.2 


78.1 


70.0 


58.2 


43.8 


38.1 


56.5 


1875 


23 


26 


40 2 


51 64 1 72.2 


77.8 


72.6 


67.0 


54.5 


41.3 


43.5 


52.8 


1876... 


.. 41.2 


41.4 


40.5 


57.7 67.2 73.3 


79.4 


78.4 


67.2 


55.8 


41.5 


24.7 


55.7 


1877 


31 2 


42 


39 1 


54 9 63 6 74 4 


77 9 


75 9 


69.8 


60.6 


42 6 


48.3 


56 7 


1878 


35 8 


40 8 


54 3 


60 . 9 63 . 5 72 . 7 


81.7 


79.2 


68.8 


56.8 


47.0 


27.0 


57.4 


1879 


. 27.6 


33.8 


48.4 


55.1 68.8 73.6 


81.0 


75.6 


65.6 


64.2 


48.0 


35.0 


56.4 


1880 


46 8 


40 6 


43 2 


57 8 70 2 74 4 


77 8 


79 6 


67.6 


56.2 


33.0 


28 2 


56 3 


1881... 


. 22.2 


31.2 


39.5 


51.8 71.6 76.0 


82.1 


83.8 


76.6 


62.0 


44.2 


41.6 


56.9 


1882 


. 33.5 


44.6 


47.0 


59.0 60.2 74.5 


75.4 


76.1 


69.8 


62.3 


45.4 


32.6 


56.7 


1883 


23 8 


31 2 


39 6 


57 3 63.0 73 1 


77 8 


74.6 


68.0 


56.6 


50.4 


40.8 


54.7 


1884 


. 26 2 


36 8 


44.2 


54 . 6 65 . 3 74 . 2 


78.6 


75.2 


75.0 


63.8 


47.0 


33.6 


56.2 


1885 


. 26.4 


27.4 


41.4 


57.0 65.4 74.6 


81.7 


75.9 


69.2 


56.6 


48.3 


39.0 


55.2 


1886 


25 6 


36 6 


45.2 


59.4 69.4 74 7 


80.6 


79.4 


72.2 


61.4 


46.2 


29.9 


56.7 


1887 


. . 30.8 


40.8 


46.2 


60.7 71.1 77.1 


83.8 


79.0 


70.0 


54.2 


45.3 


31.8 


57.6 


1888 


25 2 


33 


41 


59 4 63 2 73 7 


79 8 


74 8 


66 6 


55 


44 8 


38 2 


54 6 


1889 


34 8 


31 4 


46 6 


57 9 63 8 70 6 


77 8 


75.4 


67.0 


55.1 


41.4 


49.8 


56.0 


1890 


. 39.2 


40.2 


39.0 


57.2 63.8 79.4 


79.8 


74.7 


65.0 


57.3 


48.6 


37.6 


56.8 


1891 


36 6 


35 9 


39 


58 7 63 6 75 7 


74 9 


74.8 


74.0 


57.6 


41.2 


42.8 


56.2 


1892 


. 25 9 


40.0 


40.4 


54 62.8 76.6 


77.1 


77.8 


70.3 


60.2 


41.5 


33.0 


55.0 


1893 


. 24 . 8 


30.8 


43.8 


56.6 64.0 75.2 


80.2 


76.1 


72.6 


58.6 


44.1 


36.4 


55.2 


1894 


35 5 


32 4 


51 2 


57 8 66 78 4 


79 2 


78.6 


70.8 


59.6 


42.5 


38.8 


57 6 


1895 


26 2 


25 1 


44.1 


59.8 66.6 77.1 


76.4 


77.9 


74.1 


53.6 


43.2 


37.0 


55.1 


1896 


35 


36 8 


40 6 


64 8 73 74 


79 


79 4 


68 2 


57.2 


46 2 


40.8 


57.9 


1897 


30 6 


36.8 


46 6 


56 63 5 75.2 


80 6 


76.8 


77.4 


66.3 


46.1 


32.8 


57.4 


1898 


, . 37.3 


38.4 


47.2 


54.4 67.1 77.8 


78.2 


78.4 


74.2 


56.0 


43.1 


32.6 


57.1 


1899 


32 6 


24 1 


39 6 


57 8 68 7 77 4 


78 8 


81 1 


70 1 


64 4 


52 2 


33.0 


56 6 


1900 


. 37 4 


29 8 


42 8 


58 68 8 74.4 


78 8 


83.8 


74.1 


65.8 


47.4 


38.0 


58.3 


1901 


, . 37.2 


31.0 


44.8 


54.4 66.2 80.6 


87.4 


80.0 


71.8 


61.8 


44.0 


30.2 


57.4 


1902 


. 32 4 


26 4 


46 8 


55 4 71 8 74 2 


80 3 


76 4 


66 4 


62.2 


53.3 


34.0 


56.6 


1903 


. 33 7 


33.6 


49.4 


57.4 69 70.4 


80.8 


77.2 


69.6 


59.2 


41.8 


29.8 


56.0 


1904 


. . 27.8 


30.8 


44.9 


49.2 65.1 72.3 


76.0 


74.4 


71.0 


58.7 


48.2 


34.7 


54.4 


1905 


24 2 


23 4 


49 9 


55 8 67 2 76 2 


75 4 


77 6 


70 8 


56.4 


46.6 


35.3 


54.9 


1906 


, . 36.8 


32.2 


33.7 


59.8 67.0 72.3 


76.5 


78.1 


73.4 


56.9 


43.8 


36.6 


55.6 


1907 


36 2 


34 4 


52 9 


47 58 9 71 2 


78 9 


76 6 


68 6 


56 


44.4 


38.0 


55.3 


1908 


. 34.0 


34.3 


49.8 


56.1 66.9 73.2 


77.7 


77.5 


73.4 


57.8 


48.6 


38.9 


57.4 


1909 


. 32.8 


39.4 


43.7 


54.2 63.5 75.0 


77.0 


81.1 


68.3 


56.2 


54.4 


26.4 


56.0 


1910 


32 6 


29 2 


57 5 


55 8 60 8 72 3 


76 8 


75 2 


70 4 


60.8 


42.0 


32.2 


55.5 


1911... 


. . 35.5 


38.4 


46.8 


54.2 71.3 79.4 


79.3 


75.8 


74.2 


57.4 


39.2 


38.4 


57.5 


1912 


. . 20.4 


28.0 


35.6 


57.2 68.2 70.3 


78.8 


76.2 


70.8 


60.8 


47.4 


38.6 


54.4 


1913 


. . 34.8 


31.9 


42.1 


56.1 67.3 78.4 


80.8 


83.0 


69.9 


56.2 


52.4 


41.2 


57.8 


1914 


. . 39.7 


27.4 


43.5 


56.4 69.4 81.1 


83.1 


78.9 


69.6 


60.8 


50.3 


28.6 


57.4 


1915 


. . 29.6 


40.5 


38.5 


63.2 64.6 72.0 


76.4 


70.4 


72.4 


61.7 


50.9 


35.4 


56.3 


1916... 


. . 34.1 


32.8 


45.0 


54.4 68.0 71.5 


84.2 


78.7 


68.3 


59.2 


49.2 


33.6 


56.6 


1917 


. . 34.8 


30.4 


46.6 


53.7 60.6 73.3 


78.9 


75.3 


69.0 


51.1 


47.7 


26.8 


54.0 


1918 


, . 18.8 


35.6 


52.6 


51.1 70.8 77.1 


78.4 


82.6 


63.6 


62.3 


46.2 


43.0 


56.8 


1919 


. 37.8 


36.7 


47.1 


57.5 63.0 77.3 


81.6 


77.1 


73.6 


60.8 


44.8 


29.6 


57.2 


1920 


. 28.4 


34.8 


46.6 


51.2 64.8 75.2 


78.8 


75.1 


72.5 


64.0 


43.7 


37.5 


56.0 



1949] CLIMATE OF ILLINOIS: APPENDIX A 159 

Table 4. Average Monthly and Annual Temperatures 
(Concluded) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


ST. Louis, Missouri, concluded 


1921 


. 39.2 


42.1 


54.0 


58.1 68.5 


78.4 


83.2 


77.5 


74.4 


59.6 


47.3 38.6 


60.1 


1922 


. 30 2 


36.4 


46.2 


58 2 69 4 


78 2 


78 8 


79 1 


73 8 


62 2 


48 8 36 7 


58.2 


1923 


. 39.5 


30.4 


41.4 


55.0 64.1 


75.2 


80.6 


77.9 


69.0 


54.9 


47.9 44.4 


56.7 


1924 


26 6 


35 6 


39 8 


58 4 59 4 


73 4 


75 


78 2 


65 


64 6 


47 6 30 


54 5 


1925 


. 33.0 


40.8 


48.6 


62 . 6 63 . 3 


78.4 


79 


78 3 


77 2 


49.5 


43 4 32.8 


57.2 


1926 


34 6 


40 2 


39 6 


50 3 68 4 


72 6 


81 


79 4 


70 9 


58 4 


40 5 33 4 


55 8 


1927 


. 31.6 


43.2 


47.9 


57 . 64 . 5 


71.2 


77.6 


72.2 


75.3 


62 8 


48 32.4 


57.0 


1928 


. 34.7 


37.6 


46.0 


52.4 66.6 


68.6 


79.9 


77.6 


67.4 


62.2 


46.0 38.6 


56.5 


1929 


. 27.6 


28 8 


50 8 


58 . 2 62 . 2 


72 8 


79 8 


76 4 


68 7 


58 4 


41 5 37 5 


55 2 


1930 


. 24.7 


45.3 


44.4 


61.2 67.3 


75.1 


83.6 


80.4 


72.6 


57.1 


47 6 35 8 


57.9 


1931 


37.8 


41.7 


40 6 


57 3 62 8 


79 6 


82 2 


77 2 


76 9 


62 9 


54 8 45 2 


59 9 


1932 


. 39.8 


44.6 


38.8 


58.0 68.0 


77.6 


81.6 


77.8 


69 6 


57 4 


41 34.2 


57.4 


1933 


.43.6 


35.1 


41 . 8 


55.5 67.2 


81.7 


81.2 


77.8 


77.4 


57.4 


46.0 40.2 


59.0 


1934 


. 37.8 


31.4 


40.8 


57 71 2 


82 6 


87 2 


80 


66 6 


63 2 


50 4 33 4 


58 5 


1935 


. 34.1 


38.5 


51.2 


52.4 61.4 


71.5 


82.2 


78.6 


71.4 


58.6 


43.4 30.3 


56.1 


1936 


. 25.4 


24.4 


49.2 


52.4 71.2 


77.2 


87.4 


85 6 


74.2 


58 8 


43 4 39 4 


57 4 


1937 


. 30.7 


33.6 


41.4 


55.0 67.2 


75.4 


79.8 


82.3 


70.3 


57.0 


42 1 32 


55 6 


1938 


. 33.4 


42.2 


5.7 


57.8 65.8 


74.2 


81.6 


81.8 


74.0 


65.5 


48.2 36.4 


59.6 


1939 


. 40.4 


34.4 


48.2 


53 . 1 69 . 2 


76.2 


80 6 


76 4 


76 9 


62 6 


45 4 39 4 


58 6 


1940 


. 17.2 


34.0 


43.6 


54.6 64.0 


76.2 


80.2 


-78.4 


71.8 


65.6 


44.2 39.9 


55.8 


1941 


. 35.4 


32.8 


40.8 


60 6 70.6 


77.3 


81.2 


81.0 


73.4 


63 3 


47 2 41 3 


58 7 


1942 


. 32.5 


34.0 


47.0 


60 . 1 65 . 6 


75.0 


80.6 


76.8 


69.7 


60.0 


49 . 33 . 3 


57.0 


1943 


. 32.1 


39.9 


40.6 


55.2 64.4 


77.5 


81.8 


80.9 


67.4 


58.8 


43.6 32.5 


56.2 


1944 


. 37.7 


38.2 


41.2 


53.8 70.6 


78.9 


79 8 


78 2 


70.8 


61 1 


46 8 29 2 


57 2 


1945 


. 28.7 


36.2 


54.3 


57.0 61.0 


70.6 


77.6 


78.0 


70.0 


58.4 


46.2 28.6 


55.6 


1946 


. 34.6 


40.6 


57.2 


61.1 62.5 


76.3 


80 6 


73 6 


70 


63 3 


49 41 


59 2 


Aver 


. 32.3 


35.0 


45.0 


56.2 66.1 


75.3 


79.8 


77.8 


70.8 


59.3 


45.8 35.8 


56.6 



160 BULLETIN NO. 532 [April, 

Table 5. Average Maximum Monthly and Annual Temperatures 
( Fahrenheit) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


CHICAGO, Cook county 


1873... 


. . 28.8 


36.3 


42.2 


51.9 


62.7 


80.6 


77.8 79.1 


71.5 


58.2 


41.0 38.1 


55.6 


1874 


33 4 


36 2 


43 9 


45.6 


65.9 


79.2 


83 2 78 6 


74 2 


60 6 


49 5 41 1 


57 6 


1875 


26 4 


24.5 


37.0 


52.0 


63.0 


71.5 


76.1 75.6 


68.5 


56 1 


43 9 42 6 


53 1 


1876 . 


. . 41.5 


39.9 


39.8 


54.4 


68.8 


76.2 


81.2 80.9 


67.7 


57.8 


46.5 27.0 


56.9 


1877 


30 4 


43 6 


35.7 


53.4 


64.8 


76.4 


81.9 80.5 


74.8 


63.2 


47.0 49 2 


58 4 


1878 


. 37.1 


41.7 


51.8 


59.7 


62.4 


72.7 


82.1 81.0 


75.3 


60.8 


50.6 29.4 


58.7 


1879 


27 9 


33 7 


48 4 


54 8 


66 7 


72 7 


83 3 79 3 


69 1 


68 3 


50 5 39 1 


57 9 


1880 


47 1 


42 5 


45.4 


58.4 


72.9 


78.7 


80.2 80.7 


70.3 


60.0 


39 7 30 8 


58 9 


1881 


. . 27.7 


32.5 


37.9 


48.4 


69.8 


71.2 


81.2 82.4 


78.7 


62.8 


47.5 43.0 


57.0 


1882 


35 6 


46 5 


46 2 


54 


59 3 


73.2 


75.8 77.2 


71 6 


64 9 


49 2 33 1 


57 2 


1883 


. 24.5 


30.6 


39.3 


54.6 


61.4 


72.4 


79.3 74.6 


67.3 


58.5 


50.7 38.5 


54.3 


1884 


. 26.2 


35.5 


41.1 


51.1 


64.7 


72.3 


75.7 75.5 


76.2 


64.9 


49.6 37.9 


55.9 


1885 


27 3 


26 9 


38 9 


54.3 


61.5 


74.8 


81.4 74.9 


71.2 


58.3 


49 4 39 


54 8 


1886... 


. 30.5 


39.0 


44.2 


57.7 


66.3 


74.9 


79.2 79.3 


74.0 


65.4 


47.0 33.9 


57.7 


1887 


27 1 


36 


40 3 


60 8 


69 2 


76 


84 1 77 2 


71 


57 5 


46 9 34 8 


56 7 


1888 


24 


31 8 


38.0 


56.3 


61.6 


75.9 


80 . 5 77 . 4 


67.6 


56.8 


48.1 38 5 


54.8 


1889 


. 35.4 


27.7 


45.6 


53.5 


64.8 


69.6 


77.1 78.5 


70.% 


56.1 


44 . 1 47 . 8 


55.9 


1890 


38 3 


39 3 


36 4 


53 7 


62 3 


78 4 


79 2 74 2 


67 4 


57 2 


49 3 37 1 


56 1 


1891 


. 35.3 


36.3 


36.8 


54.8 


61.8 


73.0 


73.8 76.0 


76.6 


60.6 


39 . 9 42 . 1 


55.6 


1892 


25 9 


35 6 


37 3 


51 3 


59 5 


72 6 


78 4 76 4 


71 6 


61 5 


40 9 29 6 


53 4 


1893 


19 


28 9 


40 1 


52.2 


59.8 


75 7 


81.0 76.5 


71 6 


61 1 


43 1 33 1 


53 6 


1894 


. 34.1 


29.8 


49.2 


54.5 


64.8 


81.4 


81.5 77.7 


73.6 


59.2 


41.1 38.1 


57.1 


1895 


.25.2 


24.7 


39.8 


54.3 


68.7 


78.4 


77.4 79.7 


77.6 


54.5 


42.9 35.1 


54.8 


1896 


32 6 


33.1 


37 9 


63.1 


75.2 


74.7 


79.7 80.2 


67.9 


56.7 


46.5 38.8 


57 3 


1897 


. 28.5 


34.1 


41.8 


53.7 


64.1 


73.8 


80.3 75.4 


77.4 


66.0 


46.7 31.6 


56.2 


1898 


34 7 


34 3 


48 6 


51 2 


64 3 


77 3 


80 1 78 


74 5 


57 1 


44 4 31 7 


56 4 


1899 


30 3 


26 1 


37 


58.5 


67.7 


78.7 


79 2 79.3 


70.1 


65 6 


51.0 34 1 


56 5 


1900 


. 35.6 


28.7 


36.2 


54.7 


67.8 


70.9 


79.0 83.6 


73.0 


68.9 


46.0 36.7 


56.8 


1901 


33 1 


23 8 


41 3 


50 8 


61 7 


78 1 


85 8 77.1 


71 5 


63 8 


44 6 29 8 


55 1 


1902 


. 31.2 


26.9 


45.2 


55.0 


67.9 


72.6 


79.9 73.8 


68.2 


62.4 


53.7 32.3 


55.8 


1903 


. 30.7 


31.2 


48.2 


55.4 


68.5 


68.7 


78.8 74.2 


72.7 


60.3 


43.5 28.0 


55.0 


1904 


24 7 


25 


42 6 


47 9 


66 1 


71 9 


78 75 8 


72 


60 7 


50 33 


54 


1905 


25 2 


24.4 


47.3 


53.2 


64.8 


74.0 


76 6 79.0 


73.4 


60 


46.4 36.3 


55.1 


1906 


38 


33 4 


34 1 


57 4 


67 3 


73 9 


75 8 80 4 


74 6 


57 5 


46 3 37 3 


56 3 


1907 


33 1 


32 3 


49 9 


44 9 


58.2 


72 5 


78 4 76 


70 3 


58 3 


45 5 36 8 


54 6 


1908 . . . 


. 33.9 


31.3 


47.5 


56.5 


65.4 


74.8 


79.0 78.5 


76.8 


61.0 


49.4 36.7 


57.6 


1909 


. 33.9 


38.1 


40.4 


51.3 


61.9 


72.3 


77.7 79.5 


68.7 


55.8 


54.4 26.9 


55.1 


1910 


30 2 


30 3 


55 6 


58 9 


59 1 


74 1 


81 4 78 8 


69 8 


65 2 


40 9 30 9 


56 3 


1911... 


. 35 . 2 


37.2 


46.1 


50.7 


73.5 


79.5 


82.1 76.4 


71.7 


57.5 


40.8 38.9 


57.5 


1912 


17 3 


26 6 


33 7 


56 


67 7 


72 8 


78 1 76 2 


73 2 


63 2 


48 3 39 2 


54 3 


1913 


, . 35 . 3 


31.4 


42.7 


55 8 


64.2 


78 1 


81 1 79 6 


70.6 


58.8 


52.1 41.2 


57.6 


1914 


. 37.2 


26.1 


41.1 


55.5 


69.4 


77.2 


80.0 79.4 


71.6 


64.0 


50.3 29.0 


56.7 


1915 


. 28.8 


38.7 


39.0 


63.6 


59.3 


70.0 


74.6 70.5 


72.2 


62.6 


50.1 32.6 


55.2 


1916... 


. 35 . 2 


30.1 


40.2 


54.3 


65.9 


69.2 


83.4 82.1 


71.4 


61.0 


48.8 32.1 


56.2 


1917 


. 30.2 


27.2 


45.4 


50.0 


58.5 


71.4 


78.0 75.5 


68.5 


50.2 


47.5 27.3 


52.5 


1918 


. 18.5 


34.3 


49.9 


49.4 


72.8 


74.6 


77.6 82.4 


66.1 


63.3 


48.4 41.0 


56.5 


1919 


. 36.0 


35.5 


44.1 


54.9 


61.0 


78.8 


83.3 80.1 


75.7 


64.5 


45.1 26.9 


57.2 


1920 


. 23.8 


30.2 


47.7 


49.4 


60.7 


75.7 


78.6 76.5 


76.4 


68.8 


45.2 37.1 


55.8 


1921... 


. 37.1 


37.7 


55.3 


62.1 


68.4 


80.3 


87.1 78.2 


76.5 


61.8 


45.4 37.7 


60.6 


1922 


. 31.2 


36.6 


44.7 


55.9 


70.8 


77.8 


79.2 79.8 


76.8 


64.9 


49.1 36.3 


58.6 


1923 


. 35.4 


27.4 


40.5 


54.3 


61.0 


79.1 


80.5 76.7 


71.5 


59.1 


48.7 44.4 


56.6 


1924 


. 26.5 


31.8 


37.9 


56.0 


61.4 


71.7 


76.2 77.9 


66.1 


67.6 


48.4 29.1 


54.2 


1925 


. 30.3 


37.4 


46.5 


60.0 


62.5 


79.7 


79.2 79.3 


76.7 


50.0 


44.8 30.1 


56.4 


1926... 


. 33.4 


35.4 


36.6 


49.8 


68.0 


71.5 


78.2 78.5 


70.7 


58.8 


43.9 33.0 


54.8 


1927 


. 30.8 


41.1 


48.0 


54.4 


64.5 


72.6 


79.1 73.3 


76.8 


66.3 


50.4 34.3 


57.6 


1928 


. 31.7 


36.7 


44.1 


52.2 


66.3 


71.0 


80.1 79.4 


69.7 


63.7 


47.6 37.7 


56.7 


1929 


. 25.7 


28.4 


51.8 


57.7 


65.1 


72.2 


82.0 77.7 


72.0 


59.4 


41.9 33.7 


55.6 


1930 


. 26.7 


43.8 


43.3 


57.2 


69.0 


78.9 


83.1 80.2 


75.0 


57.9 


49.7 34.9 


58.3 



1949] CLIMATE OF ILLINOIS: APPENDIX A 161 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. 


May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHICAGO, Cook county, 


concluded 


1931 


. 37.5 


40.9 


38.7 57.7 


63.1 


79.4 83.7 


80.6 


79.1 


65.5 


56.4 


43.0 


60.5 


1932 


38 8 


42 7 


36 52 9 


67 7 


77 8 83 2 


81 6 


71 5 


59 6 


43 3 


35 2 


57 3 


1933 


. 43.3 


34.0 


41.0 53.7 


66.7 


85.7 83.0 


78.1 


77.6 


60.4 


44.9 


37.6 


58.8 


1934 


. 38.9 


30.0 


39.4 57.8 


76.6 


82.1 84.8 


79.9 


71.3 


63.4 


52.0 


31.7 


59.0 


1935 


32 8 


34 7 


49.1 49.4 


58 


72 7 84 2 


80.5 


74 4 


62 


45 2 


30 7 


56 1 


1936 


. 25.1 


23.5 


47.2 51.2 


73.5 


73.4 84.7 


83.0 


75.1 


61.1 


44.8 


40.7 


56.9 


1937 


34 4 


34 1 


37 9 54 


65 8 


73 3 82 3 


83 5 


73 5 


57 6 


44 5 


31 7 


56 


1938 . 


. 31.4 


40.2 


53.4 58.1 


66.6 


74.6 81.4 


82.5 


71.5 


67.5 


51.4 


34.9 


59.5 


1939 , 


. 37.0 


35.6 


46.5 52.6 


71.0 


79.2 81.2 


80.5 


79.2 


65.1 


48.2 


40.7 


59.7 


1940 


22 5 


34 1 


37 2 51 3 


61 1 


76 8 83 


78 


72 5 


64 9 


45 8 


39 


55 5 


1941 


. 33.5 


31.8 


37.3 60.2 


71.3 


77.3 81.4 


81.2 


76.9 


63.9 


49.4 


46.4 


59.2 


1942 


31 6 


30 5 


45 3 62 9 


68 6 


75 2 85 1 


82 3 


72 1 


63 4 


49 5 


30 2 


58 1 


1943 


30 1 


37.2 


42 . 1 55 5 


65.0 


82 7 86 3 


84.8 


72 2 


63.4 


43.8 


35.4 


58 2 


1944 


.40.5 


36.6 


38 . 7 53 . 4 


74.4 


83 . 7 85 . 7 


84.6 


76.5 


63.8 


49.1 


28.8 


59.6 


1945 


25 8 


35 4 


59 5 59 4 


63 7 


75 4 82 8 


82 


72 7 


61 5 


47 7 


28 9 


57 9 


1946 . ... 


. 33.9 


36.5 


57.6 62.1 


67.0 


78.9 85.1 


80.6 


77.7 


70.4 


50.8 


40.2 


61.7 


Aver 


. 31.5 


33.6 


43.2 54.7 


65.6 


75.5 70.5 


78.7 


72.7 


61.4 


47.0 


35.6 


56.7 


DUBUQUE, Dubuque county, Iowa 


1874... 




30.6 


39.8 48.8 


77.8 


80.0 88.7 


84.1 


73.4 


60.9 


41.2 


32.9 




1875 


. 16.4 


16.0 


37.5 56.0 


71.6 


76.0 82.5 


79.5 


70.2 


55.9 


42.7 


41.0 


54.1 


1876 


36 


38 3 


39 9 57 6 


71 5 


78 3 85 1 


84 4 


68 7 


57 9 


41 3 


22 8 


56 8 


1877 


. 24 4 


42 8 


35 . 8 59 . 2 


72 5 


78 1 86.0 


83 6 


77.3 


58 8 


41 


46.4 


58.8 


1878 


. 33.9 


42.1 


55 . 7 62 . 6 


65.8 


77.4 86.3 


84.2 


74.3 


58.3 


47.2 


26.5 


59.5 


1879 


26 6 


30 6 


46 5 60 8 


73 7 


78 2 85 9 


81 5 


69 4 


68 6 


44 9 


29 1 


57 9 


1880 


. 42.6 


38.6 


44 4 59.1 


79 1 


82 4 85 2 


83 8 


71 4 


59.1 


35.7 


26.0 


59.0 


1881 


. 22.3 


28.8 


38.9 54.1 


79.2 


78.5 86.2 


85.4 


77.7 


61.1 


44.1 


41.0 


58.1 


1882 


. 32.8 


45.2 


45.8 59.1 


64.0 


77.2 79.4 


81.4 


72.2 


63.7 


46.0 


29.6 


58.0 


1883 


. 19.6 


27.1 


39.4 60.9 


64.4 


77.5 82.6 


78.6 


69.9 


55.8 


47.7 


35.6 


54.9 


1884 


22 8 


31 


40 5 59 1 


71 


80 1 81 9 


79 6 


78 1 


64 4 


46 9 


29 1 


57.1 


1885 


. 21 1 


23 


39 55.8 


68 5 


77 3 84 6 


76 4 


71 4 


56 7 


45 7 


32.3 


54.3 


1886 


. 19.5 


31.3 


39.9 62.3 


73.1 


80.3 87.9 


85.8 


74.1 


66.9 


42.1 


24.6 


57.4 


1887 


. 20 9 


30 


41 1 62 


77 5 


83 1 88 5 


81 6 


71 6 


56 6 


44 8 


30.7 


57.3 


1888 


. 16.7 


28.2 


34 . 3 58 . 2 


62.6 


78.9 85.5 


80.4 


70.5 


57.7 


46.2 


36.4 


54.6 


1889 


31 5 


25 2 


50 3 60 4 


69 2 


76 82 8 


82 5 


72 5 


58 3 


41 9 


44 6 


57 9 


1890 


. 30 


36 3 


36 6 61 3 


65 9 


82 7 85 5 


78 8 


70 4 


58 4 


47 4 


34.4 


57.3 


1891... 


. 33.7 


31.8 


34.4 59.4 


69.4 


78.0 78.9 


79.8 


80.8 


60.1 


37.3 


39.7 


56.9 


1892....... 


. 23.4 


34.4 


39.6 54.0 


62.1 


76.4 83.3 


82.2 


73.4 


64.8 


37.3 


24.2 


54.6 


1893 


. 14.5 


23.6 


39.8 53.1 


66.4 


80.7 87.0 


82.4 


75.8 


63.0 


43.1 


29.6 


54.9 


1894 


. 29.9 


28.8 


50.4 60.9 


70.9 


86 . 9 87 . 6 


89.1 


77.5 


63.3 


40.6 


40.0 


60.5 


1895 


. 22 


26.0 


47 65 5 


73 6 


85.2 86 5 


86 1 


80 3 


58 4 


43.1 


34.1 


59.0 


1896... 


. 32.0 


35.2 


40.1 65.3 


.78.9 


82.5 85.0 


83.1 


68.7 


59.3 


41.3 


36.7 


58.0 


1897 


. 25.7 


31.6 


39.5 55.5 


69.6 


78.2 86.4 


78.9 


81.2 


68.6 


43.5 


27.4 


57.1 


1898 


. 31.7 


31.6 


46.7 57.2 


69.2 


80.4 85.2 


80.9 


75.7 


55.6 


42.5 


?7 4 


57.0 


1899 


. 30.0 


22.5 


33.0 61.1 


70.4 


80.4 83.5 


85.1 


72.6 


67.5 


53.1 


30.3 


57.5 


1900 


. 32.8 


24.0 


36.0 62.3 


73.2 


79.8 82.5 


87.7 


75.2 


69.5 


42.2 


33.6 


58.2 


1901... 


. 31.0 


23.5 


40.2 59.9' 


70.4 


83.4 93.8 


84.6 


72.0 


64.2 


44.5 


27.3 


57.9 


1902 


. 30.7 


26.9 


47.1 58.7 


72.6 


73.3 82.6 


76.8 


68.8 


63.3 


51.4 


28.1 


56.7 


1903 


. 29.5 


30.8 


47.6 59.3 


72.0 


74.4 82.0 


77.1 


71.5 


61.9 


42.3 


27.6 


56.3 


1904 


. 21.6 


23.2 


40.8 53.5 


70.5 


77.7 80.9 


79.9 


73.4 


61.4 


50.1 


30.8 


55.3 


1905 


. 20.8 


22.1 


46.5 56.9 


68.1 


79.4 79.8 


82.2 


75.9 


59.5 


46.8 


35.7 


56.1 


1906 


. 34.1 


31.9 


33.5 62.4 


70.6 


77.7 82.2 


83.5 


78.5 


60.4 


42.9 


33.5 


57.6 


1907 


. 27.4 


32.8 


50.3 50.5 


62.8 


76.0 82.6 


79.6 


70.6 


58.9 


44.9 


35.9 


56.0 


1908 


. 33.3 


31.8 


46.0 59.0 


68.9 


76.3 83.1 


80.1 


79.6 


61.1 


48.6 


33.7 


58.5 


1909 


. 29.7 


34.9 


39.4 51.8 


68.1 


77.8 80.9 


84.8 


72.0 


57.6 


53.7 


24.3 


56.2 


1910 


, 27.0 


27.1 


58.9 62.8 


65.6 


82.0 87.5 


83.1 


72.1 


65.1 


39.3 


30.6 


58.4 



Data since July, 1942, are from the Chicago Municipal Airport. 



162 BULLETIN NO. 532 [April, 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DUBUQUE, Dubuque county, Iowa, 


concluded 


1911 


. 30 5 


35.1 


47.9 


54.4 76.0 84.1 


85.6 


79.9 


72.9 


56 8 


38 7 


37 6 


58 3 


1912 


. 12.0 


24.5 


33.8 


59.7 71.8 76.8 


83.3 


78.5 


72.3 


62.5 


49.6 


39.0 


55.3 


1913 


32 3 


28 8 


42 5 


61 67 9 81 8 


85 5 


84 5 


73 3 


58 3 


51 9 


40 9 


59 1 


1914 


. 35.5 


24.6 


42.0 


58.1 72.9 79.0 


86.5 


82 9 


74.0 


65 3 


49 5 


25 4 


58 


1915 


. 25.0 


36.2 


38.9 


68.4 63.3 74.5 


78.2 


75.2 


73.7 


63.8 


49.8 


31.3 


56.5 


1916 


. 30 7 


27 6 


42.4 


57.0 69.0 72.7 


91.2 


85 5 


71 9 


61 3 


46 


27 6 


56 9 


1917 


. 25.9 


24.6 


43.6 


54 . 9 64 . 7 74 . 1 


83.4 


79.3 


71.3 


49.8 


48.4 


22 6 


53 6 


1918 


. 16.6 


32.4 


52.2 


53.2 74.9 77.7 


81.8 


84.1 


67.1 


63.7 


48.2 


38.9 


57.6 


1919 


. 33 8 


33 3 


46 2 


57.2 67.6 82 


86 7 


80 5 


75 4 


61 


42 


21 3 


57 2 


1920 


. 21.0 


27.9 


46.6 


50.9 69.0 80.9 


80.7 


80.2 


76 2 


68 7 


42 1 


33 5 


56 5 


1921 


35 2 


38 1 


50 9 


61 7 73 4 84 4 


89 2 


80 4 


76 5 


61 


40 4 


34 6 


60 5 


1922 


. 28 4 


33.1 


44 5 


57.9 73.8 81.0 


80.0 


82.2 


76 4 


66 5 


48 8 


32 2 


58 7 


1923 


. 32.7 


26.8 


36.4 


57 . 1 70 . 4 82 . 3 


87.4 


79.1 


71.3 


57.9 


47.9 


41.2 


57 5 


1924 


. 22.5 


32.1 


37.4 


58.8 63.3 74.5 


79.8 


79.1 


67.3 


69.0 


46.6 


23.7 


54.5 


1925 


30 1 


36 2 


49 1 


66 . 4 67 . 9 79 . 8 


82.5 


82 8 


77 


47 3 


44.1 


27 3 


57 5 


1926... 


. 30.3 


35.8 


36.7 


53.9 74.2 74.2 


82.2 


81.5 


69.7 


58.4 


39.7 


29.1 


55.5 


1927 


27 


39 2 


47 9 


56 3 64 6 75 2 


83 


78 5 


76 2 


65 3 


47 


29 


57 4 


1928 


31 7 


35 3 


45.9 


53 . 73 . 6 73 . 5 


82 8 


81.5 


70 


62 7 


45 3 


35 8 


57 6 


1929 


. 19.0 


23.2 


46.9 


59.7 66.7 76.1 


83.8 


80.5 


72.3 


59.9 


40.3 


32.3 


55.1 


1930 


. 20.9 


41.9 


45.1 


60.5 70.1 78.6 


86.1 


85.1 


76.7 


57.7 


49.9 


32.2 


58.7 


1931 


. 35 2 


41.6 


41.0 


61.3 66.4 85.1 


89.2 


83.8 


79.2 


64.2 


53.8 


40.5 


61.8 


1932 


. 33.1 


40.0 


34.2 


57.9 72.7 81.6 


86.4 


81.6 


73.0 


57.4 


42.0 


31.2 


57.6 


1933 


41 9 


31 1 


42 4 


56 2 68 8 88 4 


85 5 


80 8 


78 6 


59 3 


45 


33 8 


59 3 


1934 


. 35 7 


29 3 


41.5 


59.6 82.2 89 2 


87.6 


81 3 


70 9 


66 1 


50 3 


28 1 


60 2 


1935 


. 27.6 


33.5 


48.2 


55 . 1 64 . 74 . 4 


88.8 


82.7 


75.1 


62.1 


41.6 


28.3 


56.8 


1936 


19 4 


16 9 


46 9 


54.3 76 6 79 2 


94 6 


88 9 


75 4 


58 9 


43 1 


37 8 


57 7 


1937 


. 25 9 


29.2 


38.8 


54.8 70.5 78.1 


87.0 


87 8 


76.3 


58.7 


43.7 


29.3 


56 7 


1938 


. 26.9 


38.0 


52.5 


59 . 8 68 . 8 78 . 2 


85.4 


84.8 


74.3 


68.5 


47.0 


32.9 


59.8 


1939 


35 


32 6 


45 9 


55 9 77 4 81 2 


86 4 


82 3 


79 9 


64 2 


49 3 


41 


60 9 


1940 


19 1 


31 8 


37.4 


56.6 67.8 81.5 


87.1 


79 2 


75 8 


66 7 


43 2 


34.9 


56 8 


1941 


30 6 


30 8 


40 1 


64 2 76 1 79 9 


86 1 


85 


76 7 


63 7 


49 5 


38 7 


60 1 


1942 


29 5 


29 9 


46 5 


66 68 8 78 1 


84 1 


81 3 


69 8 


63 3 


47 


27 4 


57 6 


1943 


. 25.8 


34.3 


40.4 


57 . 9 66 . 1 80 . 6 


86.5 


83 


69.4 


62.1 


41.9 


35.8 


57.0 


1944 


. 38.9 


35.4 


37.7 


54.1 74.0 80.7 


83.3 


82.6 


73.8 


63.7 


45.8 


27.5 


58.1 


1945 


25 


32 1 


57 9 


58 8 64 2 74 1 


82 7 


82 4 


71 9 


61 2 


44 7 


25 6 


56 7 


1946 


. 31.9 


35.7 


55.8 


65.3 67.9 78.8 


85.0 


80.0 


73.8 


67.5 


48.0 


38.9 


60.7 




27 8 


31 2 


43 1 


58 4 70 2 79 2 


84 8 


82 


73 8 


61 5 


45 


32 3 


57 4 


























PEORIA, Peoria county 


1886 


25 3 


34 8 


47.7 


66 77 1 84 


91.6 


89 8 


79.3 


69 5 


47 1 


29 3 


61 8 


1887 


. 27.1 


37.9 


46.0 


67.7 81.8 88.4 


94.5 


87.3 


78.4 


60.6 


49.6 


35.3 


62.9 


1888 


24 


33 5 


44 1 


66 3 70 83 9 


89 3 


83 5 


74 6 


60 9 


49 7 


40 7 


60 


1889 


. 37 


32 4 


52 5 


64.6 72 1 79 3 


86 2 


85 5 


75 7 


61 6 


45 2 


50 1 


61 8 


1890 . . . , 


. 39.5 


41.6 


41.3 


65.2 70.5 88.2 


90.5 


83.7 


75.2 


63.6 


53.3 


42.0 


62.9 


1891 


. 38 


39 1 


40 


66 7 72.3 82 4 


82 6 


82 4 


83 3 


65 8 


42 7 


44.7 


61 7 


1892 . . ... 


. 27.8 


39.9 


44.8 


58.3 67.7 83 1 


86.0 


86.8 


77.8 


68.6 


43.2 


33.6 


59.8 


1893 


. 22.8 


31.8 


45.7 


59.3 69.9 84.6 


92.1 


87.4 


79.9 


66.9 


48.2 


37.3 


60.5 


1894 


. 36 9 


33 8 


55 1 


65.3 74 88 9 


91 1 


87 2 


77 7 


65 2 


44 7 


41 2 


63 4 


1895 


. 27.6 


27.5 


47.8 


65.1 77.5 89.0 


86.1 


88.2 


81.5 


59.9 


45.9 


37.9 


61.2 


1896... 


. 37.1 


36.4 


44.7 


69.9 82.4 85.2 


89.9 


88.0 


74.7 


63.6 


47.2 


42.7 


63.5 


1897 


. 30.3 


37.4 


46.9 


59.3 73.6 85.1 


90.1 


84.5 


86.4 


73.5 


49.1 


32.1 


62.4 


1898 


. 37.6 


37.8 


51.6 


60.7 72.3 85.6 


89.3 


83.9 


80.1 


59.0 


45.1 


33.2 


61.4 


1899 


. 32.4 


27.3 


39.4 


65.0 76.6 86.7 


88.7 


90.0 


77.2 


70.4 


55.5 


35.4 


62.0 


1900 


. 38.1 


31.5 


40.9 


65.6 76.8 83.7 


88.8 


91.7 


79.2 


72.7 


48.7 


37.5 


62.9 


1901... 


. 35.4 


27.7 


45.5 


62.6 73.4 86.8 


94.9 


86.3 


78.2 


68.2 


48.0 


32.7 


61.6 


1902 


. 35.7 


30.0 


50.9 


61.2 78.8 79.5 


87.3 


82.5 


73.5 


68.0 


57.2 


34.5 


61.6 


1903 


. 34.6 


34.3 


54.5 


63.5 76.9 78.7 


88.9 


82.9 


77.5 


64.7 


45.6 


31.4 


61.1 


1904 


. 27.6 


30.0 


46.4 


58.3 77.9 86.0 


89.2 


84.9 


79.6 


75.4 


54.1 


37.5 


61.4 


1905 


. 28.4 


24.4 


53.1 


61.0 71.6 82.5 


81.7 


85.5 


78.3 


63.5 


50.7 


38.1 


59.9 



1949] CLIMATE OF ILLINOIS: APPENDIX A 163 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, 


Peoria county, 


concluded 


1906 


. 38.8 


35.9 


35.7 


65.3 


74.3 80.3 84.9 


87.1 


81.8 


63.1 


47.2 


37.5 


61.0 


1907 


. 35.5 


36.9 


55.1 


53.1 


65.8 77.9 84.0 


82.5 


74.9 


62.4 


49.0 


39.5 


59.7 


1908 


. 35.8 


34.1 


52.1 


62.0 


71.1 79.7 85.3 


84.5 


83.1 


66.5 


52.2 


37.9 


62.0 


1909 


. 34.5 


41.1 


45.9 


59.4 


70.0 81.3 81.9 


89.8 


75.2 


60.9 


57.6 


26.7 


60.4 


1910 


. 31.6 


32.9 


63.0 


63.6 


66.8 82.6 78.1 


84.5 


76.7 


69.1 


44.7 


33.7 


61.4 


1911... 


. 35.7 


40.2 


51.2 


57.5 


81.3 87.6 87.1 


84.0 


78.1 


61.3 


42.1 


40.2 


62.2 


1912 


. 18.5 


28.1 


37.4 


62.3 


75.9 80.5 85.9 


82.7 


77.8 


67.0 


51.4 


41.6 


59.1 


1913 


. 36.4 


33.3 


45.3 


62.5 


74.0 85.7 90.5 


90.1 


78.4 


61.7 


55.4 


41.7 


62.9 


1914 


. 39.0 


28.0 


45.2 


61.3 


77.2 85.6 91.3 


87.8 


77.3 


67.6 


54.2 


28.6 


61.9 


1915 


. 29.1 


41.6 


41.8 


70.1 


69.1 79.0 81.2 


76.7 


77.7 


67.9 


54.2 


34.1 


60.2 


1916 


36 3 


32 4 


46 7 


59 4 


71 4 75 4 93 8 


87 2 


75.3 


65 6 


52 3 


34 3 


60 8 


1917 


. 33.8 


30.7 


50.2 


56.1 


66 . 6 77 . 6 86 . 


81.9 


74.7 


53.9 


51.1 


27.8 


57.5 


1918 


. 19.3 


38.4 


58.8 


54.6 


77.3 82.4 83.7 


88.2 


69.4 


66.8 


50.1 


44.3 


61.1 


1919 


. 38 1 


38 9 


50 3 


61 


68 84 7 90 5 


83 


79 9 


66 6 


46 9 


27 9 


61 3 


1920 


. 26.5 


35.0 


51.8 


52.7 


71.5 83.4 85.7 


83.9 


80.3 


71.4 


46.3 


38.5 


60.6 


1921... 


. 39.2 


41.9 


58.6 


64.7 


76.4 87.3 91.6 


83.6 


80.6 


66.6 


47.1 


39.7 


64.8 


1922 


.33.6 


39.2 


48.8 


62.5 


75.8 84.8 85.6 


86.5 


82.2 


70.3 


50.5 


38.1 


63.2 


1923 


. 38.3 


31.0 


44.3 


61.2 


72.3 83.2 89.6 


84.7 


75.3 


60.6 


50.3 


45.6 


61.4 


1924 


. 28.0 


35.1 


41.2 


64.7 


66.6 78.7 82.0 


82.9 


70.8 


72.3 


50.6 


30.1 


58.6 


1925 


. 32.1 


42.0 


53.0 


69.7 


70.6 84.4 85.7 


85.2 


81.7 


51.7 


46.5 


32.1 


61.2 


1926... 


. 34.8 


39.9 


40.4 


54.0 


76.8 78.5 86.4 


83.5 


73.6 


61.3 


43.5 


33.7 


58.9 


1927 


. 31.7 


43.9 


51.2 


59.7 


69.0 76.9 84.7 


79.4 


79.9 


69.6 


52.0 


35 .'1 


61.1 


1928 


. 34.5 


39.9 


50.3 


58.1 


75.9 75.5 85.9 


85.3 


72.9 


66.9 


48.5 


39.4 


61.1 


1929 


. 27.4 


29.7 


55.8 


62.7 


69.4 79.5 85.1 


82.1 


75.9 


63.1 


43.6 


35.1 


59.1 


1930 


. 25.6 


46.7 


49.0 


66.7 


74.1 83.2 91.1 


88.1 


82.0 


62.5 


52.2 


36.6 


63.2 


1931... 


. 40.5 


44.6 


43.9 


63.4 


68.5 86.5 90.7 


85.4 


83.9 


68.5 


58.9 


44.8 


65.0 


1932 


. 40.0 


46.4 


40.0 


62.3 


75.9 84.7 88.1 


85.3 


77.4 


63.4 


44.9 


35.7 


62.0 


1933 


. 46.5 


36.9 


47.8 


60.6 


71.9 92.0 90.7 


84.3 


85.1 


62.7 


49.1 


40.4 


64.0 


1934 


. 39.0 


32.5 


43.8 


63.0 


82.7 92.6 92.8 


85.4 


73.4 


69.1 


54.0 


32.5 


63.4 


1935 


. 34.2 


37.7 


53.6 


57.4 


64.4 76.9 89.9 


85.3 


77.3 


65.6 


45.7 


30.1 


59.8 


1936... 


. 24.6 


24.2 


52.3 


58.6 


78.7 86.0 98.9 


92.8 


80.4 


64.0 


46.6 


42.3 


62.4 


1937 


. 32.3 


36.5 


44.5 


58.6 


73.4 81.0 87.1 


89.3 


78.5 


61.8 


45.9 


32.2 


59.3 


1938 


. 33.8 


42.8 


57.2 


62.8 


72.1 80.2 87.5 


87.6 


79.2 


73.0 


52.8 


37 1 


63.8 


1939 


. 39.6 


36.7 


50.9 


57.8 


77.7 82.7 86.5 


84.8 


85.3 


70.1 


50.6 


42.7 


63.8 


1940 


. 20.8 


35.4 


43.7 


60.1 


69.3 84.6 89.8 


84.9 


79.4 


71.3 


47.5 


40.0 


60.6 


1941 


. 33.9 


33.5 


44.2 


66.0 


78.1 84.1 88.6 


87.2 


81.1 


67.2 


51.5 


42.8 


63.2 


1942 


. 33.8 


32.3 


50.2 


67.2 


72.2 81.3 86.5 


84.1 


74.6 


66.6 


50.0 


31.7 


60.9 


1943 


. 31.8 


40.3 


45.7 


60.3 


67. 6 81.9 87.4 


85.8 


72.8 


64.5 


45.1 


34.6 


59.8 


1944 


. 40.5 


38.9 


42.1 


56.3 


76.5 85.2 86.7 


84.5 


76.2 


65.8 


48.6 


29.1 


60.9 


1945 


. 26.7 


36.3 


60.0 


61.0 


65.1 75.1 83.6 


85.3 


74.5 


62.9 


48.5 


28.7 


59.0 


1946 


. 35.2 


40.1 


61.2 


65.3 


67.6 81.3 87.2 


79.5 


78.0 


70.9 


51.8 


42.0 


63.3 


Aver 


33.0 


35.8 


48.2 


61.9 


72.1 83.0 88.0 


85.4 


78.0 


65.5 


49.2 


36.6 


61.4 


SPRINGFIELD, Sangamon county 


1879... 










. 90.9 


82.3 


72.2 


70.8 


52.6 


40.4 




1880 


. 51.9 


47.4 


50.6 


66.5 


77.9 82.7 86.0 


87.3 


73.9 


63.8 


40.5 


34.0 


63.7 


1881... 


. 30.3 


38.1 


44.3 


56.7 


79.2 81.1 88.3 


89.7 


82.5 


66.6 


49.7 


46.9 


62.8 


1882 


.39.5 


51.5 


53.2 


64.1 


66.1 79.8 81.0 


81.2 


75.1 


67.8 


51.7 


37.9 


62.4 


1883 


. 29.6 


38.4 


48.9 


65.8 


70.6 77.9 84.5 


79.9 


74.7 


60.0 


54.0 


44.5 


60.7 


1884 


. 29.6 


41.2 


48.0 


59.8 


71.0 80.1 83.1 


81.6 


80.7 


69.8 


53.6 


36.8 


61.3 


1885 


. 28.6 


31.2 


45.8 


60.3 


70.6 80.0 87.3 


79.9 


73.1 


62.3 


55.6 


44.9 


60.0 


1886... 


.33.6 


42.0 


50.8 


64.6 


75.4 81.0 88.4 


85.9 


77.3 


68.5 


52.3 


36.2 


63.0 


1887 


. 34.6 


45.1 


50.1 


66.4 


77.6 83.7 91.6 


85.5 


76.4 


61.0 


52.6 


35.8 


63.4 


1888 


. 27.0 


35.9 


45.0 


65.7 


69.1 79.2 85.9 


80.9 


74.3 


60.2 


49.5 


41.0 


59.5 


1889 


. 37.9 


33.7 


52.5 


64.1 


70.1 76.9 83.7 


82.8 


73.4 


60.1 


44.4 


52.5 


61.0 


1890 


. 41.6 


43.5 


42.6 


64.2 


70.4 86.3 87.1 


81.2 


73.2 


63.5 


54.3 


42.2 


62.5 


1891... 


, . 39.7 


39.8 


41.3 


64.6 


71.5 82.4 81.3 


81.3 


83.0 


65.1 


43.8 


46.4 


61.7 


1892 


. 28.8 


41.2 


44.2 


57.7 


66.7 81.9 83.1 


84.6 


77.1 


67.7 


43.9 


35.2 


59.3 


1893 


. 25.3 


32.9 


47.0 


59.3 


68.8 82.1 88.0 


84.5 


80.4 


67.3 


49.7 


38.5 


60.3 


1894 


. 36.9 


33.9 


55.8 


63.6 


72.4 86.9 88.4 


86.2 


77.0 


65.7 


46.8 


41.5 


62.9 


1895 


29.8 


27.5 


48.8 


64.9 


74.3 85.1 83.0 


85.4 


80.8 


60.5 


47.0 


39.8 


60.6 



Data since May, 1943, are from the Peoria Municipal Airport. 



164 BULLETIN NO. 532 [April, 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 


SPRINGFIELD, Sangamon county, 


concluded 


1896... 


. 37.4 


38.6 


44.1 


69.9 


79.6 


81.6 


84.2 84.4 


72.9 


62.5 


48.8 


43.1 62 3 


1897 


. 31.2 


37.6 


48.3 


58.4 


69.9 


81.4 


86.9 82.9 


86.2 


74.5 


49.0 


34.1 61.7 


1898 


. 37.9 


39.1 


51.9 


59.1 


71.5 


83.3 


86.2 83 6 


79 6 


59 2 


45 4 


33 9 61 8 


1899 


. 34.2 


25.9 


41.0 


63.6 


73.7 


83.2 


86.0 87.5 


75.6 


70.6 


55.5 


37.9 61.2 


1900 


. . 42.0 


34.0 


45.2 


65.0 


74.7 


81.7 


85.6 90.7 


78.8 


72.9 


49.9 


38.8 63.3 


1901 


, . 38.2 


30.9 


47.0 


6(K3 


72.8 


86.3 


94.7 87.5 


78.7 


68.7 


48.3 


31.0 62.0 


1902 


. 34.8 


28.3 


49.9 


60.6 


78.0 


78.8 


86.4 81.3 


72.1 


67.9 


56.4 


34.5 60.8 


1903 


. 34.8 


35.9 


54.4 


63.3 


75.1 


76.8 


86 8 82 5 


77 1 


66 3 


47 1 


33 3 61 1 


1904 


. 28.6 


31.8 


48.1 


56.2 


71.9 


78.4 


83.1 81.4 


77.0 


66.1 


54.6 


39.5 59.7 


1905 


. 28.2 


27.3 


56.5 


62.9 


73.2 


84.6 


83.5 85.8 


77.9 


64.3 


52.6 


39.1 61.3 


1906... 


. 41.0 


37.9 


37.0 


67.1 


76.1 


81.2 


87.1 87.6 


82.9 


64.8 


49.2 


39.6 62.6 


1907 


. 39.8 


39.0 


58.3 


54.3 


67.5 


79.7 


87.3 83.9 


77.4 


64.5 


50.5 


40.7 61.9 


1908 


. 37.8 


36.2 


55.7 


63.2 


73.3 


81.5 


86.4 86.3 


81.8 


65.9 


54.0 


41.7 63.6 


1909 


. 36.7 


43.3 


49.1 


62.1 


71.9 


82.8 


83.3 89.8 


75.1 


62.1 


59.3 


29.2 62.1 


1910 


. 34.2 


34.8 


64.9 


64.4 


68.4 


82.3 


86.0 84.2 


77.0 


68.7 


46.8 


35.7 62.3 


1911... 


. 39.3 


42.6 


52.9 


60.3 


82.2 


89.5 


88.0 83.7 


78.2 


62.3 


44.1 


41.1 63.7 


1912 


. 22.2 


30.8 


39.4 


64.6 


76.6 


80.1 


87.3 83.7 


78.1 


67.8 


51.9 


43.3 60.5 


1913 


. 38.7 


34.6 


47.6 


63.5 


76.4 


88.8 


91.0 90.8 


77.9 


61.9 


56.8 


42.9 64.2 


1914 


42 4 


29.6 


46 9 


63.2 


78 8 


88 7 


92 6 88 


77 5 


67 


55 8 


30 7 63 4 


1915 


. 31.5 


43.7 


42.4 


70.6 


70.3 


79.5 


82.9 77.1 


78.7 


68.0 


55.9 


36.4 61.4 


1916 


. 38.3 


34.7 


49.8 


60.9 


74.5 


77.9 


95.1 87.5 


76.1 


65.9 


53.6 


36.4 62.6 


1917 


. 37.6 


34.0 


52.5 


59.4 


68.1 


79.4 


87.2 82.1 


76.0 


56.6 


52.4 


29.9 59.6 


1918 


. 21.4 


40.5 


61.8 


56.1 


78.9 


84.6 


85.5 90.5 


70.1 


67.4 


50.1 


46.2 62.8 


1919 


. 41.1 


40.8 


52.4 


64.2 


69.6 


85.6 


91.0 84.7 


81.6 


67.0 


48.6 


31.3 63.2 


1920 


. 29.8 


37.1 


52.7 


55.0 


71.7 


83.5 


87.6 82.5 


79.3 


70.5 


47.2 


39.5 61.4 


1921... 


. 40.7 


44.2 


60.5 


65.6 


77.1 


87.3 


92.0 84.6 


81.3 


67.1 


50.0 


41.7 66.0 


1922 


. 33.7 


41.0 


50.9 


64.1 


76.6 


86.7 


87.0 87.7 


82.7 


70.0 


52.0 


40.3 64.4 


1923 


. 40.5 


33.4 


47.5 


62.7 


72.7 


83.7 


88.9 84.7 


74.5 


60.6 


51.4 


47.3 62.3 


1924 


. 30.2 


37.8 


42.8 


66.4 


67.1 


80.2 


83.1 85.8 


72.0 


72.2 


52.0 


33.4 60.2 


1925 


. 35.1 


44.5 


54.9 


71.0 


73.3 


86.6 


87.0 85.9 


84.0 


53.2 


47.8 


35.0 63.2 


1926... 


. 36.8 


42.1 


42.7 


56.0 


77.7 


79.4 


88.7 85.8 


75.2 


63.3 


44.4 


36.5 60.7 


1927 


. 33.7 


46.2 


52.3 


61.4 


70.6 


78.2 


86.1 79.0 


81.0 


69.9 


53.6 


36.8 62.4 


1928 


. 37.3 


41.4 


51.2 


58.9 


75.6 


76.0 


87.1 86.1 


74.5 


67.4 


49.8 


41.9 62.3 


1929 


. 31.0 


32.0 


56.7 


64.3 


68.1 


78.8 


85.4 82.2 


75.1 


63.4 


44.1 


37.6 59.9 


1930 


. 27.7 


48.2 


48.8 


66.9 


73.7 


82.0 


90.5 87.1 


79.9 


63.0 


53.5 


38.3 63.3 


1931... 


. 41.9 


46.4 


44.6 


65.5 


70.8 


87.8 


92.0 85.9 


85.9 


69.7 


59.9 


46.9 66.4 


1932 


. 42.3 


49.2 


43.6 


65.2 


77.4 


85.7 


89.5 85.9 


78.3 


65.5 


45.5 


38.1 63.8 


1933 


. 47.8 


39.9 


50.9 


63.1 


74.0 


92.9 


91.8 85.9 


86.2 


64.8 


51.5 


44.1 66.1 


1934 


. 41.3 


35.7 


45.9 


65.2 


82.2 


93.9 


95.0 87.2 


74.5 


70.9 


56.1 


35.8 65.3 


1935 


. 37.4 


41.2 


57.4 


58.5 


67.2 


78.9 


91.4 87.2 


79.3 


66.7 


47.4 


32.7 62.1 


1936 


. 28.1 


28.6 


55.1 


60.6 


80.3 


87.1 


98.3 94.1 


82.2 


65.6 


48.5 


43.2 64.3 


1937 


. 35.0 


38.6 


47.5 


61.9 


75.4 


83.1 


88.1 89.6 


79.3 


63.2 


47.4 


34.7 62.0 


1938 


. 37.1 


45.9 


60.3 


65.0 


73.5 


82.7 


90.9 89.7 


82.6 


74.8 


54.6 


39.0 66.3 


1939 


. 42.1 


39.1 


53.8 


60.0 


78.8 


84.2 


88.7 85.7 


86.9 


71.9 


51.5 


43.9 65.6 


1940 


. 21.5 


36.2 


47.1 


61.4 


71.6 


86.1 


90.0 86.3 


80.8 


74.0 


49.6 


42.4 62.2 


1941... 


. 36.8 


36.4 


46.9 


67.8 


80.3 


86.0 


89.6 88.4 


82.0 


69.1 


52.4 


44.7 65.0 


1942 


. 37.5 


35.5 


52.6 


69.2 


74.0 


82.4 


88.2 84.8 


77.0 


67.3 


53.3 


34.6 63.0 


1943 


. 35.2 


45.4 


47.8 


62.7 


70.8 


85.8 


90.5 89.2 


76.1 


66.6 


48.6 


35.3 62.8 


1944 


. 40.6 


42.4 


45.8 


60.0 


79.1 


89.2 


90.2 86.9 


78.8 


69.2 


50.7 


31.8 63.7 


1945 


. 30.5 


40.0 


62.3 


63.7 


68.7 


77.6 


86.5 86.5 


76.5 


66.4 


51.2 


31.1 61.8 


1946 


. 38.7 


44.3 


64.8 


67.9 


69.5 


85.1 


88.2 81.0 


79.9 


73.3 


54.3 


44.9 66.0 


Aver 


. 35.3 


38.3 


50.1 


62.9 


73.5 


82.9 


87.8 85.2 


78.2 


66.2 


50.7 


38.8 62.5 



1949] CLIMATE OF ILLINOIS: APPENDIX A 165 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. 


May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


URBANA, 


Champaign county 


1889 


. 36 


33.7 


50 . 2 64 . 1 


70.5 


74.4 


82.4 


81 1 74.0 


59 1 


43 9 


52 8 


60 2 


1890 


. 43.3 


43.7 


42 . 2 63 . 5 


69.2 


84.7 


85.9 


80.5 72.4 


62.0 


52.1 


41.0 


61.7 


1891 


39 9 


42 9 


41 1 64 4 


72 3 


83 9 


84 


84 8 84 9 


65 6 


45 6 


45 5 


63 


1892 


. 27.5 


40.9 


46.5 57.7 


66.6 


77.5 


84.7 


84 . 7 79 . 4 


67.9 


43.4 


35.0 


59 3 


1893 


24 5 


35 5 


48 59 3 


69 


83 2 


91 7 


87 5 81 9 


67 2 


52 1 


38 4 


61 5 


1894 


. 39 7 


33 9 


55 6 64.3 


71 


88 6 


89.6 


89.3 78 7 


66 2 


47 2 


43 4 


64 


1895 


. 29.6 


27.8 


49.3 65.5 


75.9 


87.7 


84.2 


88.5 82.0 


61.2 


46.8 


39.2 


61.5 


1896 


. 35 3 


37 9 


43 1 69 3 


79 9 


81.4 


85 2 


84.4 73 6 


61 8 


49 8 


41 7 


61 9 


1897 


. 30.0 


37.0 


49.0 58.4 


68.7 




85.7 


83.0 86.9 


75.0 


49.0 


34.0 




1898 


. 38.7 


38.2 


51.7 59.1 


70.6 


78.6 


83.8 


83.4 79.2 


60.1 


45.3 


34.5 


60.3 


1899 


. 34 


27 


40 2 63 9 


72.5 


83 3 


85.7 


87 4 




54 4 


36 1 




1900 


. 39.3 


32.3 


42 . 3 62 . 7 


75.3 


80.2 


85.7 


89.0 80.6 


73.5 


50.0 


39.2 


62.5 


1901 


37 


29 7 


47 2 59 6 


71 


84 4 


93 2 


87 5 80 2 


67 8 


45 9 


30 6 


61 2 


1902 


. 33.8 


26.8 


49.8 59.2 


77.3 


78 5 


85.9 


80 . 4 73 . 


67 2 


56 


33.7 


60.8 


1903 


. 31.9 


34.2 


54 . 4 62 . 6 


76.3 


76.4 


86.0 


82.7 79.0 


65.6 


46.0 


32.0 


60.6 


1904 


26 5 


30 5 


47 3 56 1 


72 5 


80 2 


83 9 


82 7 77 5 


65 6 


54 


36 8 


59 5 


1905 


. 28.4 


26.2 


54.8 61.6 


73.1 


86.2 


82.3 


83 . 5 77 . 8 


64.3 


51.2 


38 


60 6 


1906 


40 6 


37 5 


33 66 7 


74 9 


79 3 


85 6 


86 7 80 9 


63 6 


49 2 


36 4 


61 2 


1907 . . 


. 38.5 


37 


54 6 52 


64 2 


77 


84 2 


81 1 75 2 


62.7 


47 9 


39 2 


59 5 


1908 


. 37.5 


33.9 


53.2 60.0 


71.0 


79.8 


81.0 


84.2 86.0 


66.4 


52.4 


41.0 


62.2 


1909 


36 2 


42 


46 7 58 5 


69 1 


80 1 


80 3 


87 2 74 2 


59 8 


59 4 


27 7 


60 1 


1910 . ... 


.32.7 


34.0 


62 . 9 63 . 3 


66.4 


81.2 


85 1 


82.5 78.7 


69.3 


36 6 


33.6 


61 4 


1911 


. 37.7 


40.9 


50.1 57.0 


78.9 


86.8 


88.0 


84.6 76.4 


62.6 


43.2 


39.5 


62.1 


1912 


. 20 9 


28 2 


37 8 61 8 


73 7 


78 


83 2 


81 78 4 


68 4 


51 2 


42 4 


58 7 


1913 


. 39.5 


33.5 


47.3 61.9 


74.4 


83.4 


90.2 


89 . 2 76 . 8 


61.9 


55.3 


41.7 


62.9 


1914 


. 40.3 


28.8 


44.9 60.1 


76.7 


86.0 


90.3 


85.7 76.6 


67.1 


55.0 


29.6 


61.7 


1915 


. 30 9 


42 5 


42 3 68 7 


68 3 


78 2 


80 8 


75 76 9 


66 9 


54.6 


34 8 


60 


1916 


. 39.1 


34.5 


46.7 59.8 


72.5 


75.2 


92.0 


87.9 76.1 


66.0 


53.5 


36.7 


61.7 


1917 


37 5 


33 


51 2 58 


66 1 


77 2 


83 9 


80 4 75 1 


55 8 


52 2 


29 2 


58 3 


1918 


. 19.7 


39 8 


59.6 56.1 


77.3 


82.3 


83.9 


87 . 8 69 . 1 


66.9 


50.1 


45.3 


61.5 


1919 


. 40.0 


39.4 


51.8 62.7 


69.3 


83.9 


89.7 


82.5 80.6 


68.1 


48.1 


31.4 


62.3 


1920 


. 27 6 


36 


50 1 53 4 


70 1 


82 3 


84 7 


82 79 4 


71 2 


47 8 


38.5 


60.3 


1921... 


. 39.4 


42.4 


60.2 63.8 


74.8 


85.8 


91.6 


81.0 79.1 


65.3 


50.6 


40.4 


64.5 


1922 


33 1 


40 2 


50 6 62 


74 9 


84 2 


84 5 


85 5 80 2 


69 7 


50 9 


39 6 


62 9 


1923 


. 38.0 


31.9 


46 3 60 6 


70.7 


81 6 


86 2 


81.9 74.6 


60.8 


51.0 


47.4 


60.9 


1924 


. 29.5 


36.0 


41.5 63.9 


65.5 


78.0 


82.4 


83.1 71.1 


72.2 


51.1 


32.3 


58.9 


1925 


. 33 1 


43 8 


53 5 69 5 


72 3 


85 2 


86 4 


84 7 82 1 


52 4 


47.1 


34 2 


62 


1926... 


,. 34.7 


39.6 


41.7 54.5 


76.1 


77.9 


87.3 


84.0 74.3 


61.8 


45.0 


34.7 


59.3 


1927 


32 8 


45 8 


51 5 60 6 


69 2 


76 2 


83 7 


77 4 80 5 


69 9 


54 3 


36 5 


61 5 


1928 


. 35.3 


39 8 


48 9 57.3 


73 6 


74 2 


85.0 


84 . 73 . 2 


66.8 


49.4 


41.0 


60.7 


1929 


. 31.2 


31.9 


56.0 63.6 


68.2 


78.7 


84.6 


81.3 75.5 


62.8 


44.3 


36.3 


59.0 


1930 


. 22 7 


47 3 


47 2 65 9 


73 9 


83 


90 6 


88 79 8 


62 6 


51.5 


37.8 


62.5 


1931... 


. 40.2 


44.9 


42.5 62.8 


69.5 


84.6 


88.9 


85.5 82.6 


68.2 


58.2 


45.5 


64.4 


1932 


. 42 5 


46 1 


41 5 63 8 


74 4 


83 5 


87 7 


85 76 6 


64.5 


44.1 


37.3 


62.2 


1933 


. 45.8 


37.7 


47.9 61.5 


72.3 


90.9 


90.0 


83 . 9 82 . 9 


63.2 


50.0 


42.1 


64.0 


1934 


40 1 


33 4 


44 5 63 1 


80 8 


90 7 


92 5 


83 8 73 3 


68 7 


54 


33 9 


63 2 


1935 


. 36.6 


39 6 


55 8 57 7 


65.0 


76 9 


87 4 


83.8 77.6 


65 1 


47.1 


31.4 


60.3 


1936 


27 3 


28 1 


52 3 58 3 


76 1 


85 6 


95 9 


90 2 79 9 


64 5 


47 5 


41.9 


62 3 


1937 


. . 36.4 


36.0 


45.9 59.7 


73.3 


80.1 


84.5 


86.8 77.1 


61.0 


47.4 


33.1 


60.1 


1938 


. . 34.8 


44.4 


57.0 63.2 


71.8 


79.5 


85.9 


85.6 78.8 


72.6 


53.6 


38.3 


63.8 


1939 


. 40.4 


39.1 


51.7 57.5 


77.1 


81.9 


85.5 


83.6 85.0 


69.0 


50.3 


43.1 


63.7 


1940 


, . 21.4 


35.9 


44.7 59.3 


68.5 


83.1 


88.0 


85.7 78.8 


71.8 


48.4 


42.4 


60.7 


1941... 


. . 36.2 


34.5 


45.0 66.5 


77.1 


83.0 


85.8 


85.6 80.6 


67.4 


52.2 


43.6 


63.1 


1942 


. . 36.3 


33.2 


52.2 67.0 


72.5 


81.5 


86.4 


82.7 75.2 


65.9 


53.1 


32.8 


61.6 


1943 


. . 35.5 


43.7 


47.0 61.2 


70.5 


84.5 


89.1 


86.3 74.6 


66.7 


46.5 


35.6 


61.8 


1944 


. . 42.1 


40.6 


44.6 59.5 


77.1 


87.3 


88.0 


84.7 77.3 


67.4 


49.9 


31.6 


62.5 


1945 


. . 29.8 


40.2 


61.8 62.0 


67.0 


77.2 


84.5 


83.5 76.0 


64.2 


50.1 


30.2 


60.5 


1946 


. 37.3 


42.5 


62.3 66.2 


67.8 


82.5 


86.1 


81.0 79.4 


73.6 


54.2 


45.0 


64.8 


Aver 


. . 34.6 


36.9 


48.9 61.6 


72.1 


80.0 


86.4 


84.3 78.0 


65.7 


50.0 


37.7 


61.4 



166 BULLETIN NO. 532 [April, 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


CAIRO, Alexander county 


1872 . . 






51.8 


70.9 


78.8 


85.0 89.1 


90.9 


81.7 


69.7 


49.5 36.9 




1873 


. . 37.9 


45.8 


56.2 


64.6 


75.2 


86.7 87.1 


88.0 


78.0 


64.5 


54.7 48.3 


65.7 


1874 


. . 47.3 


47.3 


55.6 


60.5 


79.4 


89.0 90.8 


88.0 


81.4 


67.9 


55.2 47.5 


67.6 


1875 


. . 36.2 


41.8 


53.5 


64.1 


75.3 


82.6 86.7 


81.4 


76.7 


65.9 


53.6 52.1 


64.3 


1876... 


. . 52.7 


52.4 


51.3 


68.4 


76.8 


82.7 88.2 


86.2 


77.7 


66.7 


51.3 35.5 


65.8 


1877 


. . 42 . 


52.0 


53.5 


64,5 


73.9 


82.8 85.6 


84.4 


77.2 


68.7 


52.7 56 4 


66 2 


1878 


. . 45.8 


49.9 


65.4 


71.1 


75.1 


79.6 88.4 


87.9 


77.9 


67.5 


57 . 1 38 . 8 


67.1 


1879 


. . 41.8 


45.6 


60.2 


66.2 


78.8 


81.9 88.5 


82.4 


74.4 


72.6 


59 48 8 


66 8 


1880 


. . 57.8 


52.1 


55.5 


69.6 


80.2 


83.5 85.9 


85.8 


73.9 


65.4 


43.7 39.3 


66.1 


1881 


. . 34.7 


45.4 


53.5 


63.2 


79.3 


85.7 90.7 


92.9 


84.8 


73.4 


55.1 52.0 


68.8 


1882 


. . 44.0 


55.4 


60.2 


68.5 


71.2 


84.3 82.7 


82.0 


77.2 


72.9 


56.0 44.5 


66.6 


1883 


. . 39.7 


46.3 


51.5 


68.0 


73.9 


83.5 85.3 


82.6 


77.1 


67.2 


58.5 51.2 


65 5 


1884 


35 4 


49.5 


54.5 


63.6 


74.1 


80 . 9 85 . 6 


83.6 


82.0 


72 3 


57 8 43 1 


65 2 


1885 


. . 37.9 


40.5 


51.3 


69.5 


74.1 


82.4 87.6 


84.6 


76.5 


64.5 


55.6 46.6 


63.3 


1886 


. . 32.4 


42.7 


52.0 


65.4 


77.4 


79.4 87.0 


85.8 


79.7 


70.5 


53.8 38.0 


63.8 


1887 


. 41.3 


50.4 


55.5 


69.2 


78.8 


82.7 89.2 


88.2 


80.4 


67.1 


57.4 44.7 


67.2 


1888 


. . 40.5 


45.4 


53.0 


71.3 


72.3 


80.5 88.2 


83.7 


76.5 


64.8 


53.1 45.9 


64.6 


1889 


, . 44.6 


43.0 


59.6 


69.3 


75.2 


78.8 84.7 


83.4 


,75.8 


66.0 


49.6 62.1 


66.2 


1890 


. 51.6 


51.7 


49.5 


66.0 


74.8 


87.8 88.5 


83.3 


73.0 


65.5 


59.5 46.7 


66.5 


1891 


, . 44.4 


48.4 


48.8 


68.7 


73.0 


85.5 83.2 


83.4 


83.2 


68.5 


51.7 53.1 


66.0 


1892 


. . 37.4 


51.7 


51.5 


65.2 


73.0 


84.6 84.7 


84.5 


80.2 


69.9 


52.4 42.7 


64.8 


1893 


. . 38.2 


44.9 


55.5 


68.6 


72.6 


82.6 88.3 


85.9 


80.1 


67.0 


54.1 47.0 


65.4 


1894 


. . 47.6 


42.4 


60.8 


68.4 


74.0 


87.5 86.2 


87.6 


80.0 


70.1 


54.6 47.8 


67.2 


1895 


. 38.4 


36.8 


55.0 


69.6 


75.1 


85.9 83.0 


86.9 


84.0 


65.6 


54.3 46.5 


65.1 


1896... 


.. 44.2 


46.4 


49.5 


73.9 


81.9 


82.1 87.8 


88.0 


78.5 


68.2 


58.5 50.4 


67.4 


1897 


. 42.1 


48.2 


58.5 


65.1 


73.6 


85.0 88.3 


87.1 


87.4 


77.6 


58.5 43.2 


67.9 


1898 


. . 48.8 


47.7 


60.0 


63.9 


78.1 


86.5 85.9 


86.1 


82.7 


65.6 


53.5 44.1 


66.9 


1899 


. 41.7 


35.0 


53.6 


66.0 


78.2 


84.8 86.0 


89.5 


79.8 


73.1 


61.0 43.7 


66.0 


1900 


, . 47.7 


43.7 


55.4 


67.9 


78.0 


81.8 86.4 


90.7 


83.8 


74.5 


57.8 48.3 


68.0 


1901... 


. 48.0 


41.6 


55.0 


63.2 


75.2 


88.6 93.7 


85.4 


80.3 


72.2 


55.8 39.8 


66.6 


1902 


. 42.5 


34.7 


57.1 


66.3 


81.9 


84.1 89.2 


86.3 


75.7 


71.7 


61.3 43.4 


66.2 


1903 


. 43.7 


44.9 


58.8 


66.5 


76.5 


77.8 87.3 


85.7 


81.2 


69.6 


53.0 41.9 


65.6 


1904 


. 41.9 


44.7 


58.4 


60.7 


75.4 


82.5 84.6 


84.4 


81.0 


69.1 


57.7 46.5 


65.6 


1905 


. 34.9 


36.0 


62.5 


66.9 


77.5 


85.2 82.9 


86.6 


81.3 


68.2 


59.8 43.7 


65.5 


1906... 


. 48.5 


44.4 


44.9 


70.6 


77.6 


83.5 84.7 


85.5 


82.4 


66.7 


54.9 46.3 


65.8 


1907 


. 51.7 


46.6 


65.5 


58.6 


70.1 


81.9 89.3 


85.9 


79.8 


68.3 


55.1 47.0 


66.6 


1908 


. 44.0 


45.9 


61.7 


68.3 


77.2 


83.3 86.8 


86.3 


83.1 


69.4 


59.3 50.0 


67.9 


1909 


. 44.6 


52.7 


55.0 


67.0 


73.8 


85.4 86.7 


90.1 


78.5 


70.2 


66.4 38.0 


67.4 


1910 


. 43.9 


43.1 


69.3 


66.6 


72.1 


81.4 86.0 


85.4 


82.6 


71.0 


54.4 42.3 


66.5 


1911... 


. 49.6 


51.3 


61.0 


65.9 


82.5 


89.1 87.2 


84.5 


85.8 


68.5 


51.7 48.0 


68.8 


1912 


. 34.7 


39.9 


49.0 


65.7 


76.7 


79.2 87.2 


84.8 


82.0 


72.4 


57.0 47.2 


64.6 


1913 


. 48.5 


43.8 


55.5 


65.4 


77.4 


89.2 89.2 


90.9 


79.6 


65.4 


62.3 47.2 


67.9 


1914 


. 48.8 


42.0 


52.2 


66.4 


79.1 


91.9 93.3 


87.3 


79.2 


69.5 


60.9 37.8 


67.4 


1915 


. 41.3 


48.6 


47.4 


73.4 


76.7 


82.9 87.0 


79.6 


82.1 


72.9 


61.4 46.3 


66.6 


1916 


. 48.5 


44.6 


56.1 


64.2 


79.3 


81.3 90.7 


87.4 


78.8 


71.6 


60.4 46.2 


67.4 


1917 


. 47.8 


46.1 


57.7 


67.3 


71.0 


83.1 86.2 


84.5 


80.0 


63.8 


57.4 36.9 


65.2 


1918 


. 28.8 


50.5 


64.6 


63.3 


79.9 


86.3 87.3 


90.9 


73.1 


71.2 


55.2 53.0 


67.0 


1919 


. 47.3 


48.0 


57.3 


67.8 


72.2 


86.1 90.6 


85.8 


83.5 


71.9 


56.5 41.5 


67.4 


1920 


. 39.8 


45.1 


56.5 


64.1 


75.3 


83.4 87.2 


83.4 


81.6 


73.9 


52.4 47.3 


65.8 


1921 


. 48.7 


49.9 


66.3 


68.3 


77.6 


87.9 92.3 


85.6 


85.0 


69.6 


60.1 50.3 


70.1 


1922 


. 41.5 


48.4 


56.1 


69.1 


78.0 


87.0 86.5 


86.3 


84.3 


72.1 


59.4 50.0 


68.2 


1923 


. 51.0 


42.5 


54.5 


66.8 


73.0 


83.5 88.6 


86.6 


78.3 


66.4 


57.4 55.2 


67.0 


1924 


. 38.5 


45.3 


48.7 


69.0 


70.6 


84.0 84.3 


86.9 


74.9 


76.7 


58.7 44.1 


65.1 


1925 


. 44.3 


52.7 


62.0 


74.7 


75.4 


89.2 89.0 


89.9 


87.7 


60.7 


55.5 43.6 


68.7 


1926... 


. 44.4 


51.1 


51.8 


64.1 


79.1 


83.6 89.7 


86.5 


82.7 


68.9 


51.8 44.2 


66.5 


1927 


. 43.5 


54.2 


57.3 


68.0 


76.1 


80.4 87.0 


81.5 


84.2 


74.1 


60.4 45.5 


67.7 


1928 


. 44.4 


47.7 


57.0 


62.7 


76.2 


78.2 88.1 


86.5 


77.6 


72.1 


55.0 48.6 


66.2 


1929 


. 42.5 


38.5 


60.7 


69.2 


73.7 


83.0 88.3 


84.8 


77.8 


68.1 


51.6 47.7 


65.5 


1930 


. 38.0 


55.9 


55.9 


71.1 


76.9 


86.0 94.1 


89.8 


83.2 


67.3 


56.2 43.4 


68.2 



1949] CLIMATE OF ILLINOIS: APPENDIX A 167 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, Alexander county, concluded 


1931... 


. 46.8 


51.9 


50.6 


68.1 73.2 89.0 


89.8 


84.4 


86.3 


74.3 


64.3 


54.2 


69.4 


1932 


51 6 


56 8 


51 4 


68 8 77 6 87 3 


90 6 


87 9 


78 2 


67 3 


52 1 


44 4 


67 8 


1933 


53 5 


46.1 


55.7 


66.4 78.0 89.7 


87.4 


85.0 


85.2 


69.2 


57.5 


53.3 


68.9 


1934 


. 48.4 


43.7 


53.8 


68.8 81.2 90.3 


93.9 


87.0 


76.8 


74.1 


61.4 


44.5 


68.7 


1935 


46 5 


49 8 


63 9 


63 6 73 3 80 4 


89 6 


87 6 


80 9 


70 5 


54 4 


39 5 


66 7 


1936... 


. 38.1 


39.4 


63.3 


63.6 81.3 89.7 


91.7 


93.0 


84.0 


68.8 


54.2 


50.3 


68.1 


1937 


46 3 


44 6 


53 3 


67 2 77 9 85 3 


87 3 


90 8 


79 1 


66 7 


53 4 


42 3 


66 2 


1938 


. 45 5 


55.5 


65.9 


69 . 5 77 . 4 82 . 4 


88.8 


89.8 


83.1 


76.8 


60.2 


47.3 


70.2 


1939 


. 50.8 


47.5 


60.5 


64.0 77.5 84.1 


89.2 


86.7 


88.4 


73.9 


55.3 


49.6 


69.0 


1940 


29 7 


43 2 


54 5 


65 2 74.1 84 


86 


86.9 


82.1 


76.3 


55.6 


50.7 


65.7 


1941... 


. 45.5 


42.6 


52.3 


72.1 81.1 86.8 


90.8 


90.0 


85.1 


74.6 


56.2 


49.4 


68.9 


1942 


42 5 


43 


59 6 


69 9 76 6 86 7 


92 2 


85 6 


80 9 


71 7 


59 8 


43 7 


67 7 


1943 


. 46.0 


53.1 


53.3 


67.9 78.4 88.2 


92.3 


91.7 


77.7 


69.2 


55.8 


42.6 


68.0 


1944 


. 47 . 1 


52.0 


57.3 


66.0 81.3 89.8 


91.2 


88.2 


81.5 


73.4 


55.8 


39.7 


68.6 


1945 


40 3 


47 5 


66 2 


69 9 73.1 82.8 


88 4 


87.7 


81 5 


68.3 


57 3 


40.2 


66 9 


1946 


. 45.4 


53.5 


68.0 


73.8 74.3 88.0 


89.6 


83.9 


81.9 


74.7 


61.4 


52.7 


70.6 


Aver 


44.1 


46.7 


56.5 


67.2 76.3 84.5 


88.0 


86.5 


80.6 


69.8 


56.3 


46.0 


66.9 










ST. LOUIS, 


Missouri 


1873... 








60.3 74.0 85.8 


86.3 


87.6 


75.2 


61.3 


50.8 


43.5 




1874 


. 43.3 


43.3 


51.7 


56.2 78.0 88.2 


89.9 


86.4 


78.5 


66.5 


52.5 


47.2 


65.1 


1875 


. 31.2 


36.9 


49.5 


60.7 73.9 80.9 


84.7 


81.0 


75.9 


65.1 


50.7 


52.2 


61.9 


1876 


. 51.3 


52.3 


49.0 


67.3 75.9 80.9 


86.6 


85.6 


73.8 


64.7 


48.8 


33.7 


64.2 


1877 


39 8 


50 


48 5 


63 5 71 5 83 3 


85 7 


84 4 


77 8 


68 6 


49 2 


53 9 


64 7 


1878 


41 5 


46.9 


62 6 


68 7 71 2 80 2 


89.7 


87.4 


78.3 


65.2 


54.6 


32.5 


64.9 


1879 


. 36.2 


42.8 


57.2 


65 . 2 79 . 1 83 . 3 


90.7 


85.1 


75.4 


73.8 


56.8 


44.7 


65.9 


1880 


. 55.9 


50.8 


51.1 


67.6 80.0 83.2 


86.7 


90.5 


76.6 


66.0 


39.9 


34.9 


65.3 


1881 


. 29.7 


38.9 


48.0 


60.4 80.8 85.6 


92.5 


95.4 


88.0 


70.4 


53.0 


48.8 


66.0 


1882 


. 40.9 


53.5 


56.7 


68.5 69.5 84.4 


84.6 


84.9 


79.7 


71.6 


52.1 


39.5 


65.5 


1883 


31 9 


39 8 


47 9 


67 8 73 2 82 2 


87 2 


84 1 


78 6 


63.2 


59 3 


49.8 


63.8 


1884 


.35.1 


46.1 


51.8 


62.6 73.8 81.9 


86.3 


83.2 


82.5 


72.1 


56.1 


41.2 


64.4 


1885 


. 36.1 


38.2 


50.4 


65.7 73.4 82.5 


89.3 


83.7 


76.3 


64.8 


56.2 


47.8 


63.7 


1886 


. 35.0 


45.8 


53.5 


67.2 78.2 82.3 


89.1 


88.5 


80.4 


70.3 


54.5 


38.5 


65.3 


1887 


. 41.2 


50.3 


55.2 


70.3 78.8 85.4 


92.1 


87.5 


79.0 


65.2 


56.0 


39.9 


66.7 


1888 


34 1 


41 7 


50 8 


70 5 72 6 82 4 


88 6 


82 7 


76.3 


64 7 


51.7 


45.2 


63.4 


1889 


.42.3 


40.3 


55.3 


67.4 73.2 79.2 


86.1 


84.8 


75.5 


63.5 


47.5 


57.9 


64.4 


1890 


. 47.3 


48.4 


47.4 


66.1 73.5 89.1 


89.7 


83.0 


72.9 


65.3 


56.8 


44.3 


65.3 


1891 


. 42.8 


43.9 


45.9 


67.4 72.8 84.1 


83.8 


83.4 


84.3 


67.2 


47.4 


50.8 


64.5 


1892 


. 33.3 


46.7 


47.6 


61.4 70.4 84.4 


84.6 


86.3 


79.9 


69.3 


47.8 


38.7 


62.5 


1893 


33 2 


38 5 


52 6 


64 6 72 5 83 8 


88 6 


85 5 


81 7 


68.1 


52.4 


44.1 


63.8 


1894 


. . 42.9 


39.7 


60.6 


66.5 74.8 89.1 


89.1 


88.3 


79.4 


68.6 


51.1 


45.0 


66.3 


1895 


. . 33.5 


32.1 


53.0 


69.3 76.1 86.1 


84.6 


86.5 


83.4 


63.3 


50.2 


43.2 


63.4 


1896 


, . 41.5 


44.6 


48.8 


74.7 82.0 82.6 


87.6 


88.7 


77.4 


66.7 


54.3 


47.5 


66.4 


1897 


. . 36.9 


43.3 


54.6 


64.2 72.3 83.9 


88.9 


86.2 


88.9 


77.3 


54.8 


39.1 


65.9 


1898 


. 44 


46 9 


55 7 


62 6 75 9 86 2 


86.0 


86 5 


83 1 


63 5 


51.4 


40.3 


65.2 


1899 


. . 40.6 


32.4 


48.8 


66.4 76.8 85.9 


86.8 


89.7 


79.9 


73.9 


59.9 


39.7 


65.1 


1900 


, . 44.8 


38.2 


52.0 


66.7 77.5 82.0 


87.0 


92.3 


82.6 


74.8 


55.7 


44.6 


66.5 


1901... 


. . 44.8 


37.5 


52.3 


62.9 75.2 90.3 


97.8 


90.0 


82.0 


71.7 


52.6 


36.7 


66.2 


1902 


. . 39.1 


33.2 


53.9 


64.2 80.9 82.9 


88.7 


84.5 


74.8 


71.3 


59.8 


39.9 


64.4 


1903 


. . 40.8 


41.1 


57.4 


66.8 77.0 78.1 


88.8 


85.6 


79.0 


67.9 


50.2 


38.5 


64.3 


1904 


. . 35.8 


39.6 


53.9 


57.7 73.5 79.6 


84.0 


82.8 


79.7 


67.7 


56.6 


43.2 


62.8 


1905 


.. 31.7 


31.9 


59.7 


64.8 76.2 85.6 


82.9 


86.2 


78.4 


64.3 


55.2 


42.3 


63.3 


1906... 


. . 44.9 


40.6 


39.3 


69.1 76.8 80.5 


85.0 


86.3 


81.9 


65.9 


50.6 


43.6 


63.7 


1907 


. . 44.7 


42.4 


62.1 


55.1 68.0 79.1 


87.3 


84.5 


76.8 


64.8 


52.2 


44.4 


63.4 


1908 


. . 42.0 


41.7 


59.1 


65.1 75.3 80.9 


85.4 


86.3 


82.5 


67.3 


57.3 


47.4 


65.9 


1909 


. . 40.5 


48.3 


52.4 


64.2 72.1 83.2 


84.8 


90.1 


77.3 


65.7 


63.2 


33.3 


64.6 


1910 


. . 39.9 


38.0 


68.3 


65.0 69.2 80.7 


84.6 


83.1 


78.4 


70.0 


50.5 


39.6 


63.9 



168 BULLETIN NO. 532 [April, 

Table 5. Average Maximum Monthly and Annual Temperatures 

(Concluded) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


ST. LOUIS, 


Missouri, concluded 


1911... 


. 44.5 


46.4 


57.4 


62.5 80.9 


88.6 


88.1 


84.0 


82.8 


64.5 


47.6 44.8 


66.0 


1912 


. 28.0 


35.1 


43.0 


66.2 77.0 


78.4 


87.2 


84.4 


79.0 


70.2 


55.4 47.1 


62.6 


1913 


. 43.7 


39.5 


51.9 


64.5 77.0 


88.7 


89.7 


92.7 


78.3 


63.8 


59.8 46.7 


66.4 


1914 


. 47.8 


36.5 


51.5 


64.7 79.5 


91.3 


92.6 


88.2 


77.7 


68.7 


59.2 34.5 


66.0 


1915 


. 36.7 


46.6 


44.9 


72.6 73.1 


80.9 


84.8 


77.9 


81.0 


71.1 


60.1 41.9 


64.3 


1916 


. 43.2 


41.1 


55.3 


62.9 77.1 


79.8 


93.3 


87.4 


77.3 


69.0 


58.0 41.5 


65.5 


1917 


. 43.7 


41.1 


55.8 


62.'8 69.2 


82.2 


88.1 


83.4 


78.0 


60.5 


55.4 34.2 


62.9 


1918 


. 25.8 


45.1 


63.8 


58.5 79.8 


85.6 


87.8 


91.4 


71.6 


70.4 


52.7 50.1 


65.2 


1919 


. 46.0 


44.9 


56.3 


66.8 70.7 


86.1 


90.9 


86.5 


83.0 


68.5 


53.0 37.6 


65.9 


1920 


. 35.3 


42.2 


56.0 


59 . 8 72 . 7 


84.0 


88.1 


83.6 


80.4 


72.9 


51 2 44 8 


64 2 


1921 


. 46.1 


49.9 


64.5 


67.6 76.9 


86.9 


92.3 


86.4 


82.6 


69.0 


55.5 45.9 


68.6 


1922 .... 


. 38.4 


44.6 


54.2 


67.7 77.7 


87.3 


87.6 


88.2 


83.7 


71 6 


56 45 2 


66 8 


1923 


. 46.3 


38.1 


52.2 


65.0 72.6 


83.1 


89.1 


86.5 


76.6 


62.6 


55.1 51.8 


64.9 


1924 


. 35.2 


43.1 


46.2 


68.0 67.7 


81.7 


83.1 


87.3 


73.9 


74.4 


56.3 38.3 


62.9 


1925 


. 40.9 


49.1 


59.3 


72.5 73.1 


87.7 


87.4 


87.4 


85 5 


55 .-8 


51.3 40 2 


65 8 


1926 


. 41.9 


47.9 


47.3 


59.9 78.2 


81.8 


90.0 


88.4 


78.4 


66.5 


48.5 41.4 


64.2 


1927 


. 39.1 


51.2 


55.6 


64.7 72.4 


79.1 


86.5 


80.4 


84.1 


72.6 


56.1 41.4 


65.3 


1928 


. 42.8 


45.5 


55.7 


61.2 76.1 


76.7 


88.4 


86.1 


76.9 


70.8 


53.1 46.3 


65.0 


1929 


. 37.5 


36.8 


60.6 


67.0 70.7 


81.6 


88.3 


85.4 


77.4 


66.2 


48.3 44.6 


63.7 


1930 


. 32 5 


53.6 


53.9 


70.3 76 4 


84.7 


94.0 


89 7 


81.7 


65 2 


56 3 42 6 


66 7 


1931 


. 45.5 


49.5 


47.4 


66.8 71.9 


89.4 


92.0 


86.4 


86.1 


71.0 


62.7 51.5 


68.6 


1932 


. 47.2 


53.6 


47.6 


67.5 77.6 


86.3 


90.6 


86.7 


78.5 


67.1 


49.5 41.8 


66.2 


1933 


. 52.0 


43.7 


53.7 


64.6 76.0 


91.9 


90.4 


87.4 


87.0 


66.9 


55.3 48.9 


68.2 


1934 


. 45.5 


39.9 


50.5 


66.8 81.7 


93.1 


98.0 


89.6 


75.4 


73.2 


59.0 40.0 


67.7 


1935 


. 42.4 


46.6 


60.7 


59.9 68.9 


80.2 


90.6 


87.4 


81.4 


67.1 


50.3 37.0 


64.4 


1936. . . 


. 32.3 


33.0 


59.1 


62.4 80.8 


88.1 


97.9 


95.9 


82.6 


67.1 


52.7 47.3 


66.6 


1937 


. 38.6 


42.1 


49.4 


63.8 75.6 


84.1 


88.6 


91.4 


80.4 


65.7 


50.2 37.5 


64.0 


1938 


. 41.8 


49.1 


63.7 


66.9 74.2 


83.0 


90.7 


91.0 


83.3 


76.5 


57.6 43.2 


68.4 


1939 


. 46.8 


43.6 


58.0 


61.9 78.5 


84.2 


89.7 


85.0 


87.5 


73.4 


52.5 47.4 


66.5 


1940 


. 24.6 


39.9 


51.7 


63.9 73.4 


85.3 


89.9 


87.1 


82.2 


76.0 


52.3 46.4 


64.4 


1941... 


. 42.1 


40.1 


49.5 


68.9 79.9 


86.1 


91.1 


90.8 


82.4 


70.6 


55.0 47.6 


67.0 


1942 


. 41.1 


40.5 


55.8 


69.8 74.4 


82.5 


88.9 


84.4 


78.8 


68.8 


57.1 39.8 


65.2 


1943 


. 40.6 


50.6 


49.9 


64.4 72.1 


85.3 


90.4 


89.7 


75.7 


67.6 


52.1 39.0 


64.8 


1944 


. 44.9 


46.6 


49.7 


62.3 78.9 


88.0 


89.2 


86.4 


79.3 


71.2 


52.6 35.2 


65.4 


1945 


. 34.5 


43.6 


63.7 


65.3 69.5 


78.4 


86.0 


87.0 


77.7 


67.7 


54.2 35.1 


63.6 


1946 


. 42.6 


50.2 


66.7 


70.7 70.3 


85.5 


90.1 


81.0 


79.4 


73.8 


57.0 49.1 


68.0 


Aver 


. 40.1 


43.3 


53.8 


65.2 75.0 


84.0 


88.6 


86.6 


79.7 


68.2 


53.8 43.0 


65.1 



1949] CLIMATE OF ILLINOIS: APPENDIX A 169 

Table 6. Average Minimum Monthly and Annual Temperatures 
( Fahrenheit) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. Oct. 


Nov. 


Dec. Annual 


CHICAGO, Cook county 


1873 


. 9.8 


11.1 


22.4 


34.3 


43.1 


58.4 


60.8 


64.1 


54.9 42.4 


28.8 


26.1 37.9 


1874 


22 2 


25 


29 


32.8 


52.1 


64.0 


67.4 


67 8 


61 2 48 2 


31 9 


24 7 43 8 


1875 


. 5.2 


4.9 


25.0 


35.3 


47.6 


56.9 


62.5 


61.4 


54.5 41.5 


30.7 


29.6 37.9 


1876 


. 23 5 


24.1 


28.2 


41.3 


51.5 


62.3 


68.2 


68.3 


57.1 42.4 


33.9 


12 42 8 


1877 


.13.8 


31.2 


22.1 


40.6 


51.2 


59.8 


66.3 


64.3 


60.0 49.4 


34.4 


37.8 44.2 


1878 


25 9 


31 3 


38 7 


46 


49 7 


60 3 


69 5 


68 4 


58 4 46 2 


38 8 


18 4 45 9 


1879 


. 13.9 


20.5 


32.8 


40.8 


50.6 


58.3 


68.9 


66.5 


54.2 54.7 


35.7 


23 3 43 4 


1880 


. 31.9 


27.3 


31.4 


40.8 


58.7 


65.0 


67.2 


65.9 


56.7 44.2 


24.9 


17.4 44.3 


1881 


. 10.5 


17.7 


26.9 


36.0 


53.9 


57.6 


66.4 


69.6 


63.0 51.0 


34.1 


32.6 43 2 


1882 


. 21.0 


31.7 


33.1 


38.8 


45.2 


57.3 


62.8 


66.8 


59 . 6 52 . 5 


37.4 


20.3 43.8 


1883 


7 7 


14.8 


24.8 


40.0 


46.2 


59.0 


62.9 


62.3 


55.1 47.5 


35.1 


23 7 39 9 


1884 


. 10.8 


20.3 


27.3 


38.3 


49.1 


58.5 


62.5 


62.3 


62 . 6 49 . 3 


33.8 


22.3 41.5 


1885 


. 9.3 


8.9 


23.7 


39.1 


46.9 


58.4 


66.0 


63.1 


58.9 46.3 


37.4 


24.8 40.2 


1886... 


. 13.7 


20.0 


30.1 


42.5 


49.7 


59.9 


65.4 


67.1 


59.3 50.0 


31.2 


16.9 42.1 


1887 


. 6.5 


17.8 


25.9 


37.8 


51.4 


59.0 


66.3 


61.4 


55.4 38.7 


27.4 


19.8 38.9 


1888 


. 6.4 


15.2 


23.6 


37.7 


45.2 


58.7 


64.5 


62.8 


53.8 43.2 


37.2 


27.2 39.7 


1889 


. 23.4 


13.9 


33.0 


41.3 


49.4 


55.2 


63.7 


64.1 


56.6 44.5 


35.0 


34.7 42.9- 


1890 


. 24.1 


26.7 


24.0 


39.3 


45.9 


63.5 


65.6 


62.0 


54.6 46.8 


35.7 


25.1 42.8 


1891... 


. 25.7 


22.1 


25.8 


41.0 


46.4 


60.0 


60.8 


63.0 


62.7 45.8 


28.6 


29.7 42.6 


1892 


. 13.7 


26.0 


26.1 


38.5 


46.7 


57.8 


65.4 


66.4 


57.4 47.0 


29.7 


18.2 41.1 


1893 


. 5.6 


15.3 


27.7 


38.3 


46.4 


61.6 


67.2 


64.1 


57.8 45.3 


30.0 


18.7 .39.8 


1894 


. 21.5 


17.4 


34.6 


40.9 


48.9 


63.0 


65.9 


64.9 


60.0 46.2 


28.8 


27.7 43.3 


1895 


. 10.6 


10.5 


25.0 


40.1 


51.1 


63.7 


63.6 


66.1 


60.8 39.1 


31.3 


25.1 40.6 


1896. 


. 22.0 


21.3 


25.9 


45.5 


57.2 


60.9 


65.3 


66.4 


54.5 43.7 


31.4 


28.0 43.5 


1897 


. 15.7 


24.3 


29.0 


40.1 


47.3 


58.3 


68.7 


63.6 


62.8 52.0 


31.9 


19.4 42.7 


1898 


. 23.1 


22.1 


33.6 


39.4 


49.5 


62.0 


67.3 


65.8 


61.9 45.4 


30.9 


17.9 43.2 


1899 


. 16.3 


10.9 


24.0 


43.3 


51.7 


62.7 


65.8 


68.7 


56.5 51.7 


39.9 


21.3 42.7 


1900 


. 22.4 


12.7 


23.2 


40.7 


49.8 


58.6 


64.8 


70.0 


59.4 55.2 


32.1 


24.3 42.8 


1901 


. 19.5 


11.5 


28.1 


41.0 


47.9 


61.7 


69.6 


67.1 


58.3 48.2 


31.9 


19.2 42.0 


1902 


. 19.4 


15.8 


33.4 


39.6 


51.5 


57.5 


65.5 


64.0 


54.7 49.3 


41.4 


31.7 42.8 


1903 


. 17.9 


20.1 


34.0 


40.8 


52.5 


55.4 


65.2 


63.6 


57.2 48.2 


30.6 


13.0 41.6 


1904 


. 11.3 


10.5 


29.2 


35.3 


49.9 


58.2 


64.6 


61.8 


58.2 47.4 


36.8 


21.6 40.4 


1905 


. 11.6 


10.7 


32.5 


39.6 


49.4 


58.3 


63.0 


66.6 


59.4 44.6 


32.6 


24.8 41.1 


1906 


. 24.3 


19.6 


24.4 


42.4 


50.2 


60.3 


64.5 


68.4 


63.4 45.9 


35.1 


25.8 43.7 


1907 


. 19.7 


18.3 


33.3 


33.0 


43.0 


58.1 


65.4 


63.9 


56.7 44.7 


34.3 


26.4 41.3 


1908 


. 20.5 


19.9 


31.8 


39.8 


50.0 


60.2 


66.8 


65.8 


62.2 47.2 


35.4 


23.5 43.6 


1909 


. 20.8 


24.5 


29.5 


37.2 


47.9 


59.1 


64.1 


67.8 


57.1 43.2 


40.4 


14.0 42.1 


1910 


. 18.3 


17.1 


39.5 


41.9 


45.8 


60.5 


67.7 


65.4 


48.4 49.8 


29.0 


19.4 42.7 


1911 


. 20.4 


25.4 


30.3 


39.9 


56.3 


63.5 


67.2 


64.8 


60.1 46.7 


27.8 


28.6 44.3 


1912 


. 3.7 


14.8 


21.9 


40.0 


50.1 


57.4 


64.9 


63.3 


60.0 47.2 


35.1 


25.1 40.3 


1913 


. 20.5 


16.0 


25.6 


40.3 


49.1 


61.1 


65.9 


66.6 


58.0 45.6 


40.1 


31.3 43.4 


1914 


. 24.9 


12.1 


28.3 


39.5 


53.2 


61.4 


67.3 


66.6 


59.4 52.6 


36.3 


16.8 43.2 


1915 


. 16.6 


28.1 


28.5 


47.4 


46.9 


55.8 


62.9 


60.2 


60.0 48.0 


36.1 


23.2 42.8 


1916... 


. 19.5 


17.7 


26.9 


40.2 


50.7 


56.0 


70.7 


68.7 


55.2 45.6 


35.4 


17.6 42.0 


1917 


. 15.3 


10.2 


30.2 


38.0 


44.8 


54.4 


63.7 


62.9 


56.7 37.6 


36.3 


15.2 38.8 


1918 


. 4.5 


17.7 


32.5 


36.8 


52.5 


57.3 


62.4 


67.3 


49.8 48.3 


35.7 


31.3 41.3 


1919 


. 22.7 


23.6 


30.7 


39.8 


47.2 


65.1 


67.6 


63.1 


58.8 47.9 


31.4 


13.5 42.6 


1920 


. 11.2 


18.9 


30.5 


34.8 


47.3 


59.6 


61.3 


62.4 


59.9 52.1 


33.0 


25.7 41.4 


1921 


. 26.0 


27.4 


35.5 


45.1 


52.7 


66.2 


71.6 


65.0 


60.4 46.2 


34.7 


25.7 46.4 


1922 


. 15.8 


20.8 


32.6 


40.2 


55.7 


62.2 


64.7 


63.9 


60.0 48.9 


37.8 


21.1 43.6 


1923 


. 24.4 


14.1 


23.9 


37.1 


46.0 


60.7 


65.2 


63.2 


58.4 43.8 


36.9 


32.6 42.2 


1924 


. 9.6 


22.8 


29.2 


40.0 


44.8 


55.6 


61.2 


62.2 


52.5 50.1 


33.1 


15.3 39.7 


1925 


. 17.7 


23.9 


30.3 


44.0 


45.1 


62.0 


63.7 


64.4 


63.2 38.6 


31.3 


17.9 41.8 


1926 


. 19.4 


26.4 


23.7 


34.2 


48.7 


55.2 


64.0 


65.5 


58.0 45.9 


30.2 


20.1 40.9 


1927 


. 18.9 


28.8 


35.9 


41.3 


49.1 


57.1 


64.3 


60.1 


61.3 49.7 


36.0 


19.5 43.5 


1928 


. 18.6 


23.9 


29.7 


37.2 


50.0 


55.1 


65.4 


65.0 


53.2 49.3 


36.7 


26.6 42.6 


1929 


. 9.4 


14.8 


34.7 


44.5 


48.5 


56.6 


65.6 


63.4 


57.3 46.8 


30.7 


23.5 41.3 


1930 


. 13.5 


30.4 


28.9 


41.1 


53.4 


61.3 


65.3 


66.5 


58.8 45.2 


35.0 


24.5 43.7 



170 BULLETIN NO. 532 [April, 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHICAGO, Cook county, concluded 


1931... 


. . 26.5 


30.2 


31.0 


40.8 


48.1 64.1 


69.0 65.7 


63.3 


52.2 


43.5 


33.8 


47.4 


1932 


. . 28.3 


27.2 


24.2 


39.8 


51.6 63.3 


66.2 65.8 


57.4 


45.5 


31.1 


22.3 


43 6 


1933 


. 30.1 


18.4 


29.9 


39.9 


53.3 66.6 


68 . 3 64 . 8 


62.0 


45 1 


31 1 


25 


44 5 


1934 


. . 25.7 


15.8 


26.4 


39.4 


53.8 61.1 


68.4 65.0 


57.0 


48.5 


39.5 


20.7 


43.4 


1935 


.. 18.5 


24.6 


33.5 


38.7 


46.1 57.5 


69.5 66.4 


57.2 


46.5 


34.1 


19.7 


42.7 


1936... 


. 12.9 


7.0 


32.1 


36.1 


55.4 55.7 


69.0 66.9 


61.2 


46.1 


31.1 


27.3 


41.7 


1937 


. . 19.4 


18.8 


27.8 


39:0 


50.0 58.5 


66.4 67.9 


56.7 


44.8 


30.4 


21.6 


41 8 


1938 


. . 19.3 


29.0 


36.7 


42.4 


50.0 60.5 


66.2 67.5 


58.6 


50.0 


35.7 


23.4 


44.9 


1939 


. . 26.1 


19.6 


29.8 


37.7 


51.7 62.4 


66.9 64.8 


60.8 


46.9 


35.1 


29.4 


44.3 


1940 


. . 10.0 


24.4 


27.3 


37.8 


47.1 58.1 


65.3 66.1 


56.6 


49.9 


31.4 


28.0 


41.8 


1941... 


. . 22.7 


19.4 


26.8 


45.2 


53.5 61.5 


66.0 66.1 


60.6 


49.9 


37.0 


31.3 


45.0 


1942 


. . 19.7 


22.5 


33.9 


44.9 


50.4 61.1 


65. 3 62.5 


52.8 


43.2 


32.3 


15.7 


42.0 


1943 


.. 15.1 


18.4 


22.3 


35.6 


48.2 61.8 


65.1 65.2 


51.0 


44.0 


28.5 


19.8 


39 6 


1944 


. . 22.2 


21.3 


25.9 


37.2 


54.4 62.0 


62.8 63.6 


56.0 


43.1 


36.3 


15.1 


41.7 


1945 


. . 12.7 


22.1 


37.6 


40.1 


44.5 55.4 


61.2 61.9 


55.2 


41.4 


31.9 


15.4 


40.0 


1946 


. . 19.5 


20.6 


36.7 


40.1 


46.8 57.7 


64.2 59.2 


53.5 


46.6 


34.0 


23.6 


41.9 


Aver 


. . 17.6 


19.9 


29.2 


39.7 


49.6 59.7 


65.6 64.9 


57.9 


46.7 


33.8 


23.2 


42.3 


























DUBUQUE, Dubuque county, 


Iowa 










1874 




14.6 


27.5 


35.2 


58.9 64.2 


66.6 64.3 


55 1 


43.5 


26 5 


17 7 




1875 


. .-3.3 


-5.0 


18.3 


33.9 


48.5 57.0 


63.0 57.5 50.9 


37.0 


22.3 


24.5 


33.7 


1876... 


. 17.5 


17.4 


22.7 


39.5 


50.9 59.2 


65.2 64.0 


54.2 


38.4 


27.8 


4.1 


38.4 


1877 


. . 5.6 


27.6 


18.9 


39.3 


51.3 58.2 


64.1 61.6 


56.5 


44.7 


29 9 


34 5 


41 


1878 


. . 21.7 


29.3 


38.6 


45.1 


47.1 57.6 


67.5 64.1 


54.3 


42.4 


32.5 


13.6 


42.8 


1879 


. . 7.5 


13.9 


28.1 


39.7 


52.1 59.8 


66.4 61.9 


50.7 


50.8 


30.0 


13.0 


39 5 


1880 


. . 25.5 


19.1 


25.5 


38.8 


55.7 61.5 


64.4 64.1 


52.6 


39.5 


19.8 


12.4 


39 9 


1881 


. 2.2 


11.2 


23.3 


35.7 


58.5 60.3 


66.4 65.9 


57.2 


45.6 


28.2 


27.4 


40.2 


1882 


. . 13.8 


25.8 


28.1 


37.6 


43.8 55.8 


57.0 60.8 


51.4 


44.5 


28.6 


14.8 


38 5 


1883 


.1 


8.1 


21.9 


39.2 


45.2 58.6 


62.5 58.0 


48.0 


42.7 


30.2 


18.5 


36.1 


1884 


.. 4.5 


12.4 


23.7 


37.7 


49.8 59.0 


59.7 58.5 


58.3 


47.0 


27.4 


13.7 


37.6 


1885 


.. 1.5 


2.2 


22.1 


39.0 


46.8 58.0 


64.4 57.9 


53.2 


39.0 


30.7 


17.2 


36.0 


1886 


. 5.3 


12.7 


23.3 


41.4 


50.4 56.8 


63.2 63.6 


54.3 


44.1 


25.4 


6.8 


37.3 


1887 


.4 


11.0 


24.2 


39.0 


54.9 61.5 


67.2 60.3 


53.6 


37.1 


25.9 


14.8 


37.5 


1888 


. . -2.5 


8.8 


18.3 


37.9 


45.3 59.3 


65.4 60.9 


48.8 


39.3 


31.9 


23 4 


36 4 


1889 


. . 15.8 


9.5 


31.6 


39.7 


49.7 56.4 


63.3 60.6 


52.8 


37.0 


27.6 


30.2 


39.5 


1890 


. . 14.5 


20.9 


19.2 


41.2 


46.8 64.4 


65.3 58.8 


49.3 


42.8 


32.3 


20.1 


39.6 


1891... 


. 19.8 


14.4 


21.0 


42.1 


47.1 61.5 


58.7 60.5 


57.8 


41.8 


24.7 


26.2 


39 6 


1892 


. . 5.8 


22.7 


23.2 


37.4 


48.4 60.3 


65.1 63.0 


55.1 


44.5 


25 5 


11 6 


39 


1893 


.. -1.3 


6.4 


24.2 


37.3 


47.2 62.9 


65.7 59.4 


52.0 


43.4 


26.0 


14.7 


36.5 


1894 


. . 13.7 


11.2 


32.3 


42.8 


52.1 61.9 


63.3 62.0 


55.0 


41.1 


25.9 


25 


40 5 


1895 


.. 4.0 


5.0 


24.0 


42.3 


50.3 60.2 


62.4 62.8 


59.3 


37.1 


28.7 


21.8 


38.2 


1896... 


. 16.6 


19.0 


23.1 


44.8 


57.1 59.3 


61.9 62.2 


50.5 


38.7 


24.8 


24.0 


41.8 


1897 


.. 9.9 


17.9 


25.5 


39.6 


47.8 58.1 


65.5 58.4 


58.6 


46.2 


26.7 


12.2 


38 9 


1898 


. . 16.5 


16.6 


28.5 


37.9 


50.5 61.8 


63.0 61.6 


55.9 


42.0 


25.1 


11.0 


39.2 


1899 


. 10.6 


5.0 


18.6 


40.1 


51.1 60.8 


64.5 63.6 


52.2 


46.0 


34.8 


16.7 


38.7 


1900 


, . 18.4 


6.7 


20.8 


41.0 


53.2 59.6 


63.0 68.2 


55.6 


51.0 


27.7 


21.2 


40.5 


1901... 


. 16.3 


5.5 


25.5 


40.3 


50.1 61.6 


70.5 62.6 


53.5 


44.5 


26.1 


16.2 


39.4 


1902 


. . 14.9 


8.2 


31.5 


38.3 


54.1 56.7 


64.3 60.2 


50.3 


43.7 


36.7 


15.6 


39.6 


1903 


. 15.3 


14.0 


31.7 


39.8 


53.5 54.8 


62.9 59.7 


52.0 


42.8 


26.5 


9.2 


38.5 


1904 


. 5.3 


5.5 


26.9 


35.1 


49.8 57.3 


61.5 57.8 


55.0 


44.2 


32.1 


16.0 


37.2 


1905 


. 3.3 


4.6 


31.5 


39.4 


49.7 60.8 


62.9 64.8 


58.2 


42.3 


30.1 


19.6 


38.9 


1906... 


. 16.3 


12.8 


20.8 


42.1 


50.2 58.4 


62.2 64.9 


58.6 


41.1 


30.4 


20.1 


39.8 


1907 


. 12.3 


15.0 


31.5 


32.7 


42.6 56.9 


64.5 60.6 


52.8 


40.1 


29.3 


22.4 


38.4 


1908 


. 16.3 


16.2 


29.6 


38.7 


50.5 58.4 


63.6 59.0 


56.6 


42.3 


29.0 


17.8 


39.8 


1909 


. 13.0 


18.9 


26.1 


35.1 


48.3 59.6 


62.6 65.3 


52.4 


39.2 


34.8 


9.3 


38.7 


1910 


9.7 


8.8 


36.6 


39.9 


46.7 58.0 


64.5 62.4 


53.5 


45.0 


25.6 


15.7 


38.9 



m Data since July, 1942, are from the Chicago Municipal Airport. 



1949] CLIMATE OF ILLINOIS: APPENDIX A 171 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DUBUQUE, Dubuque county, Iowa, concluded 


1911 


. 12.0 


21.0 


29.9 


38 . 4 55 . 8 63 . 4 


63.9 


60.3 


55.0 


41.0 


22.7 


24.3 


40.6 


1912 


4 5 


9.7 


16 5 


40.0 51.9 56.8 


63 2 


60.9 


55.4 


42 5 


31.6 


21 5 


37 1 


1913 


. . 13.1 


12.0 


23.2 


40 . 9 50 . 5 60 . 9 


64.6 


63.8 


53.8 


41.3 


36.5 


27.4 


40.7 


1914 


. . 21.0 


7.0 


27.1 


38.9 52.2 60.6 


66.3 


62.8 


54.8 


48.1 


31.8 


11.3 


40.2 


1915 


. . 9.3 


24.3 


25.0 


47.0 46.3 54.9 


60 9 


56.0 


55 2 


44 3 


32.6 


19.7 


39.6 


1916 


12 4 


12 6 


24.7 


39 3 50 9 55 3 


69 4 


64 4 


52 4 


41.8 


29 3 


11 


38 6 


1917 


. . 7.4 


3.9 


26.0 


37 . 8 44 . 9 56 . 2 


64.1 


57.8 


52.3 


34.0 


31.9 


9.0 


35 4 


1918 


. . -.3 


13.5 


31.0 


35 . 1 54 . 9 59 . 7 


62.8 


65.0 


47.6 


44.4 


34.3 


27.0 


39.6 


1919 


18 


18.1 


27 1 


40.7 47 9 63.7 


66 6 


61 


56 8 


43 1 


27 1 


7 4 


39 8 


1920 


. . 5.8 


14.3 


27.9 


34 . 7 48 . 7 60 . 9 


61.7 


59.1 


56.5 


48.6 


29.1 


21.1 


39 


1921 


. 21.8 


21.5 


31.6 


42 . 6 53 . 7 65 . 7 


68 9 


62.7 


57.3 


44 8 


27.9 


19 7 


43 2 


1922 


.. 11.0 


14.5 


33.0 


39.7 55.8 61.3 


62.1 


62.8 


55.4 


44.2 


36.6 


15.4 


40.8 


1923 


. 19.0 


9.8 


18.7 


37.0 49.5 63.1 


66.1 


60.2 


54.2 


38.8 


32.0 


27.6 


39.7 


1924 


. . 4.7 


19.3 


26.7 


39.9 44.3 57.5 


60 2 


61 


49 1 


46 


30 1 


9 2 


37 3 


1925 


. . 13.0 


19.2 


27.7 


43.3 44.0 60.6 


62.5 


61.7 


58.7 


34.5 


27.3 


12.6 


38.8 


1926 


14.1 


22.8 


21.8 


35.0 50.8 54.7 


64.2 


64.1 


55.8 


41 4 


26 1 


14.8 


38 8 


1927 


. . 12.4 


23.6 


32.3 


40 . 4 49 . 56 . 8 


61.9 


55.9 


57.5 


44.6 


32.0 


11.6 


39 8 


1928 


. . 15.9 


21.1 


28.8 


35.4 51.3 55.5 


64.3 


62.0 


49.6 


45.0 


33.1 


22.4 


40.4 


1929 


.3 


4.9 


30.4 


42 . 3 46 . 9 56 . 6 


64.2 


60.2 


53.0 


41 5 


24.3 


18.8 


37 


1930 


2 8 


25.5 


26.2 


40 . 7 50 . 5 59 . 5 


65.8 


63.3 


54.6 


42.5 


31.3 


18.7 


40.1 


1931 


. . 21.9 


27.0 


27.8 


40.8 47.1 65.1 


67.0 


62.4 


60.9 


49 5 


37 9 


29 9 


44 8 


1932 


. . 19.9 


21.4 


20.1 


38.4 51.5 62.6 


65.7 


63.0 


50.8 


40.3 


25.2 


15.8 


39.6 


1933 


. . 24.1 


11.7 


27.6 


39.3 52.6 66.3 


65.8 


60.2 


58.2 


40.4 


27.9 


18.2 


41.0 


1934 


. . 21.0 


14.0 


24.1 


39.7 55.9 65.4 


67 4 


60 6 


52.9 


46 


36 3 


14 1 


41 4 


1935 


.. 11.3 


21.0 


30.6 


38.9 46.7 56.8 


69.5 


63.5 


55.3 


41.9 


27.8 


15.2 


39.9 


1936 


. 4.4 


1.3 


29.4 


36.1 56.3 57.9 


67 6 


64.6 


57.2 


41.2 


26 4 


20 7 


38 4 


1937 


.. 7.3 


12.8 


24.9 


39.7 51.8 59.5 


64.8 


66.4 


52.3 


40.9 


24.7 


16.4 


38.5 


1938 


.. 13.1 


25.2 


33.0 


41.8 50.8 59.8 


66.4 


65.3 


56.0 


47.2 


30.7 


19.2 


42.4 


1939 


. . 21.7 


12.1 


26.0 


37 . 1 54 . 5 62 . 3 


65.9 


61 5 


56.9 


42 5 


31 6 


25 5 


41 5 


1940 


.. 4.5 


18.9 


23.7 


37.5 47.9 61.4 


66.4 


62.8 


54.0 


46.1 


26.5 


23.6 


39.4 


1941 


. 19.1 


13.9 


23.6 


45.2 55.0 62.0 


65.4 


64.4 


57.0 


46.3 


34 


26 1 


42 7 


1942 


. . 14.2 


18.6 


32.4 


44.1 50.1 60.7 


64.9 


62.6 


52.8 


42.2 


30.8 


13.7 


40.6 


1943 


.. 7.8 


15.5 


20.7 


37.6 49.0 63.6 


66.7 


64.9 


51.0 


41.4 


26.7 


18.3 


38.6 


1944 


. . 20 . 5 


18.2 


24.0 


36.3 55.1 62.8 


62.5 


63 2 


56 8 


42.5 


35 3 


13.6 


40 9 


1945 


.. 9.4 


17.8 


36.1 


40.3 44.9 55.5 


61.3 


62.8 


53.6 


41.0 


29.3 


12.9 


38.7 


1946 


. . 15.0 


17.4 


36.1 


42 . 6 47 . 1 59 . 9 


63.9 


59.9 


53 4 


46.5 


31.4 


21 8 


41.2 


Aver 


11.3 


14.5 


26.4 


39.3 50.4 59.8 


64.4 


61.8 


54.2 


42.7 


29.3 


17.9 


39.3 


PEORIA, Peoria county 


1886... 


. 13.3 


22.2 


32.6 


48.1 55.4 62.3 


66.0 


68.5 


59.8 


46.9 


31.2 


16.0 


43.5 


1887 


. . 12.1 


26.3 


30.4 


44.0 58.6 64.2 


70.8 


64.6 


57.4 


41.0 


31.8 


23.1 


43.7 


1888 


. . 10.8 


20.0 


28.2 


43.8 51.5 63.7 


69.4 


62.9 


51.0 


42.3 


35.0 


28.3 


42.2 


1889 


. . 23.3 


17.8 


33.4 


43.8 52.6 61.3 


67.4 


62.8 


55.8 


40.0 


33.2 


35.8 


43.9 


1890 


. . 25.1 


29.2 


27.3 


44.6 51.4 69.0 


67.0 


62.7 


51.5 


45.8 


35.6 


26.5 


44.6 


1891... 


. . 26.0 


23.6 


28.0 


47.0 51.0 65.6 


62.0 


65.5 


59.0 


46.5 


31.2 


31.7 


44.8 


1892 


. . 13.0 


30.0 


30.0 


42.0 52.8 65.5 


67.0 


66.0 


54.7 


45.3 


31.7 


21.7 


43.3 


1893 


.. 7.3 


19.4 


30.7 


43.6 52.3 66.4 


70.5 


61.7 


57.6 


44.6 


29.5 


22.4 


42.2 


1894 


. . 22.4 


19.1 


37.8 


46.6 55.1 65.3 


66.5 


63.5 


59.4 


46.6 


29.8 


27.8 


45.0 


1895 


.. 12.9 


10.4 


29.9 


46.3 55.5 65.7 


65.7 


65.1 


60.8 


37.4 


33.0 


28.2 


42.6 


1896 


. . 24.3 


23.9 


30.2 


50.5 61.8 63.4 


66.6 


65.4 


54.5 


42.3 


32.5 


30.8 


45.5 


1897 


. . 18.5 


26.2 


33.4 


41.5 46.9 60.6 


67.1 


59.3 


57.3 


46.9 


31.8 


21.1 


42.6 


1898 


. . 23.5 


24.8 


34.9 


39.4 51.5 63.5 


65.5 


63.1 


59.7 


45.5 


29.4 


21.7 


43.5 


1899 


.. 19.8 


12.8 


26.7 


43.3 54.4 62.9 


64.5 


65.3 


54.0 


48.9 


39.2 


21.9 


42.8 


1900 


. . 24.7 


11.5 


27.6 


43.8 53.5 62.6 


65.4 


69.3 


58.7 


51.1 


32.8 


25.7 


43.9 


1901... 


. . 23.2 


14.4 


32.7 


40.5 51.3 63.7 


69.8 


63.8 


54.8 


44.9 


29.0 


21.6 


42.5 


1902 


.. 21.1 


14.8 


36.2 


39.7 56.9 61.4 


67.5 


63.5 


54.0 


47.0 


42.4 


24.1 


44.0 


1903 


. . 20.9 


19.9 


38.8 


45.1 56.8 59.2 


66.3 


62.7 


54.4 


46.4 


32.7 


16.9 


43.3 


1904 


. . 14.9 


15.9 


32.5 


38.5 53.9 60.8 


62.9 


59.3 


57.1 


44.3 


34.5 


24.4 


41.6 


1905 


. . 15.3 


5.9 


34.7 


40.0 51.5 59.9 


62.4 


63.2 


56.8 


41.1 


29.1 


21.5 


40.1 



172 BULLETIN NO. 532 [April, 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, 


Peoria county, 


concluded 


1906 


.. 21.7 


18.2 


22.9 


43.2 


51.6 58.3 60.3 


63.8 


57.6 


42.4 


31.8 


23.6 


41.3 


1907 


. 20.6 


19.7 


36.0 


33.6 


44.4 56.0 64.5 


61.3 


53.8 


40.3 


27.6 


25.7 


40.3 


1908 


, . 17.9 


20.0 


32.5 


40.0 


52.9 59.2 63.0 


60.7 


55.0 


41.7 


31.5 


20.9 


41 3 


1909 


. 18.1 


22.6 


27.8 


37.5 


48.4 61.1 61.0 


64.2 


52.8 


38.6 


38.3 


11.6 


40.2 


1910 


. 17.0 


14.6 


36.6 


40.3 


46.0 57.1 63.6 


60.0 


54.0 


44.2 


25.8 


17.1 


39.7 


1911... 


. 19.0 


24.3 


29.3 


39.2 


55.1 63.4 63.0 


60.1 


57.6 


41.4 


24.5 


25.8 


41.9 


1912 , 


. 3.6 


13.4 


19.5 


40'. 7 


52 . 6 56 . 2 63 . 8 


62.2 


56.2 


42 7 


32 2 


23 7 


38 9 


1913 


. 19.1 


15.5 


25.5 


41.1 


50.8 60.7 66.5 


65.6 


55.3 


42.4 


38.9 


29.7 


42.6 


1914 


. 25.3 


10.6 


28.5 


41.1 


52.9 62.7 66.2 


63.0 


55.1 


47.0 


32.5 


13.0 


41.5 


1915 


. 12.9 


29.2 


26.4 


47.4 


48.0 56.5 62.6 


57.6 


58.0 


43.4 


33.3 


21.5 


41.4 


1916 


. 18.1 


16.5 


28.2 


40.3 


51.4 56.1 68.1 


64.7 


51.8 


42.7 


32.6 


16.2 


40.6 


1917 


. 15.1 


11.0 


29.7 


38.8 


44.5 57.8 64.0 


59.8 


52.7 


34.6 


32.6 


11.8 


37.7 


1918 


. 1.5 


17.4 


32.3 


37.1 


55.5 60.5 61.9 


66.8 


47.1 


45 7 


33 7 


28 9 


40 7 


1919 


. 20.2 


22.7 


31.4 


41.6 


48.4 65.0 66.3 


60.8 


56.6 


44.9 


28.9 


13.3 


41.7 


1920 


. 10.8 


20.2 


31.2 


35.8 


50.0 60.5 61.5 


60.4 


56.7 


49.0 


30.9 


23.2 


40.8 


1921 


. 25.1 


27.0 


36.0 


43.9 


53 . 8 66 . 3 67 . 9 


63.9 


59 5 


44 5 


32 7 


24 7 


45 4 


1922 


. 14.0 


20.6 


33.5 


42.5 


55.5 61.6 63.8 


62.5 


57.0 


45.6 


36.0 


19.6 


42.7 


1923 


. 25.3 


15.4 


24.0 


37.6 


49.6 62.7 65.7 


62.2 


55.4 


40.3 


34.1 


30.4 


41.9 


1924 


. 10.0 


20.8 


28.5 


42.3 


44.4 59.7 60.1 


62.5 


50.1 


46.1 


31.9 


13.4 


39.2 


1925 


. 14.9 


24.2 


29.2 


45.9 


45.1 62.3 64.2 


62.6 


61.6 


35.1 


28.9 


17.6 


40.1 


1926 


. 19.0 


27.0 


23.7 


33.9 


51.3 55.8 65.1 


65.2 


57.5 


43.7 


28.9 


19.8 


40.9 


1927 


15.1 


28.3 


35.2 


42 


50.9 57 4 62 7 


57 6 


60 1 


46 3 


34 6 


16 7 


42 2 


1928 


. 18.5 


24.7 


30.4 


37.2 


51.3 56 . 5 65 . 2 


64.2 


49 6 


47 2 


34 9 


24 7 


42 


1929 


. 8.1 


12.6 


35.1 


44.5 


49.5 57.7 65.5 


61.0 


54.6 


42.8 


27.9 


21.4 


40.1 


1930 


. 8.3 


30.1 


28.4 


43.4 


52.5 59.9 65.3 


64.1 


57.5 


43.4 


32.6 


23.1 


42.4 


1931 


24.6 


28.8 


29.6 


41.7 


47.9 64 9 67 6 


62 5 


62 2 


50 


41 5 


32 3 


46 1 


1932 .... 


. 26.5 


27.2 


23.6 


40.4 


51.5 62.2 65.3 


63.1 


42.2 


42.2 


27.0 


20.0 


41.8 


1933 


. 28.6 


16.7 


30.9 


41.2 


53.8 65.8 66.3 


61.8 


60.2 


41.0 


30.0 


24.7 


43.4 


1934 


24.4 


15.0 


24.4 


40.2 


54 7 65.8 69 1 


63 5 


54 1 


45 7 


37 9 


19 5 


42 9 


1935 


. 18.3 


25.1 


35.0 


39.5 


47.2 57.8 68.6 


64.3 


54.3 


43.2 


31.6 


16.2 


41.8 


1936 


. 9.8 


5.5 


31.5 


37.8 


55.4 57.9 69.7 


67.8 


60.6 


44.3 


29.0 


25.4 


41.2 


1937 


15 4 


19 2 


27.9 


40 8 


52 9 60 5 64 6 


67 3 


53 2 


42 5 


27 5 


21 3 


41 1 


1938 


. 18.5 


29.6 


37.7 


43.8 


52.3 59 6 65 6 


66 9 


57 


47 6 


33 3 


22 8 


44 6 


1939 


.24.8 


18.4 


31.1 


37.6 


54.7 63.3 65.9 


61.7 


58.1 


44.1 


31.7 


25.1 


43.0 


1940 


. 5.8 


23.5 


28.1 


39.4 


48.5 62.5 65.1 


64.6 


53.7 


46.8 


28.9 


28.0 


41.2 


1941 


22 8 


17.9 


26.5 


46.1 


55 6 62 8 65 4 


65 1 


58 3 


48 8 


35 


30 6 


44 6 


1942 


. 17.3 


21.2 


33.3 


45.0 


52.1 62.5 66.1 


62 5 


55.2 


43.8 


32.8 


17 5 


42.4 


1943 


. 16.8 


20.8 


25.0 


37.2 


50.0* 64.5 64.9 


65.5 


51.0 


43.0 


27.6 


17.9 


40.4 


1944 


21 4 


20 


26.6 


38 5 


56 2 63 3 62 8 


63 2 


56 2 


42 9 


37 5 


15 3 


42 


1945 


. 12.8 


22.8 


38.9 


42.3 


46.1 57.6 61.2 


62.6 


56.4 


40 1 


30 7 


14 5 


40 5 


1946 


. 19.1 


21.6 


39.0 


43.0 


48.7 59.6 65.0 


60.3 


53.7 


47.0 


33.9 


24.0 


42.9 


Aver 


17.7 


20.1 


30.6 


41.6 


51.8 61.5 65.3 


63.2 


55.9 


44.0 


32.3 


22.4 


42.2 


SPRINGFIELD, Sangamon county 


1879... 










. 70.1 


64.8 


52.8 


53.9 


36.9 


23.9 




1880 


. 36.6 


28.8 


33.6 


45.5 


58 . 9 64 . 9 67 . 5 


66.6 


55.4 


43.8 


24.2 


20.0 


45 5 


1881 


. 13.8 


21.3 


28.5 


40.5 


59.7 63.0 69.6 


68.5 


63.6 


52.1 


34.6 


33.9 


45.8 


1882 


24 2 


34 8 


36.8 


47.0 


49 7 63 1 64 


65 9 


57 


51 2 


37 8 


24 1 


46 3 


1883 . ... 


. 12.8 


20.7 


28.7 


43.3 


50.2 61 65 7 


61 4 


52 2 


46.2 


35.3 


26.1 


42.0 


1884 


. 12.8 


24.4 


32.4 


44.0 


52.7 62.8 66.7 


63.7 


62.8 


51.1 


36.2 


22.4 


44.3 


1885 


. 12.0 


11.7 


29.1 


43.1 


52.7 62.2 69.3 


62.6 


56.9 


45.0 


38.0 


28.1 


42.6 


1886 


. 13.5 


22.2 


33.0 


47.1 


54.6 61.6 66.6 


67.2 


58.8 


47.9 


33.9 


18.1 


43.7 


1887 


. 12.9 


25.8 


31.2 


43.0 


57.2 62.2 68.2 


63.2 


56.1 


40.3 


30.4 


20.3 


42.6 


1888 


. 8.8 


19.5 


26.5 


41.5 


49.1 61.2 66.9 


62.0 


51.7 


41.6 


34.4 


27.5 


40.9 


1889 


. 23.5 


17.1 


34.1 


44.1 


51.6 58.5 65.7 


61.8 


55.4 


41.9 


31.9 


36.2 


43.5 


1890 


. 25.0 


28.2 


25.9 


43.8 


49.7 65.6 64.7 


60.7 


52.2 


45.4 


36.0 


25.7 


43.6 


1891 


. 25.0 


22.9 


26.2 


45.2 


49.6 64.1 60.7 


61.7 


58.7 


43.8 


30.4 


30.1 


43.2 


1892 


. 12.8 


28.5 


29.4 


41.9 


51.3 64.2 65.3 


64.1 


55.8 


46.1 


30.6 


21.7 


42.6 


1893 


. 8.2 


17.6 


31.0 


43.3 


51.0 63.4 68.0 


61.3 


58.0 


44.3 


30.2 


22.2 


41.5 


1894 


. 21.9 


18.5 


37.3 


44.3 


52.4 63.4 64.6 


63.3 


58.0 


46.9 


28.8 


28.8 


44.0 


1895 


13.2 


11.7 


29.9 


44.9 


53.2 64.1 63.8 


65.2 


60.4 


38.5 


32.2 


27.4 


42.0 



Data since May, 1943, are from the Peoria Municipal Airport. 



1949] CLIMATE OF ILLINOIS: APPENDIX A 173 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. Mar. 


Apr. 


May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SPRINGFIELD, Sangamon county, 


concluded 


1896 


23 5 


13.3 28.4 


50.0 


60.5 


62.9 


66.3 65.5 


55.3 


42.6 


33.3 


29.3 


44.2 


1897 


19 1 


26 33 6 


42 8 


49 9 


62 3 


68 1 62 


60 1 


50 4 


33 4 


22 


44 1 


1898 


26 6 


25.6 35.9 


42.0 


53.8 


65.3 


66 . 1 65 . 6 


60.5 


45 6 


31.0 


21.3 


44 9 


1899 


. 20.3 


12.1 27.1 


45.4 


55.4 


64.3 


66.4 65.9 


55.3 


50.3 


39.9 


23.4 


43.8 


1900 


25 


16 6 27.9 


44.4 


55 3 


62.1 


66.3 69.6 


60 3 


52.9 


34 4 


26 1 


45 1 


1901... 


. 23.7 


17.7 32.7 


41.4 


51.8 


64.8 


70.8 64.0 


56.1 


47.1 


30.5 


20.0 


43.4 


1902 


20 8 


13 35 7 


40 8 


57.8 


60 1 


67 . 62 . 9 


52.9 


48.1 


41.5 


22 7 


43 6 


1903 


19 5 


20.5 36.5 


43.0 


55.8 


57.3 


66 . 4 63 . 7 


55.6 


46.2 


29.5 


15.8 


42.5 


1904 


13 3 


16 31 6 


37 5 


52 3 


60 6 


63.6 61 6 


57 3 


45 


33 9 


21 


41 1 


1905 


12 6 


10 36.8 


42 4 


53.3 


62.4 


64.7 65.7 


59.5 


44 3 


33 


24 3 


42 4 


1906... 


. 25.2 


20 . 3 24 . 2 


45.6 


53.4 


61.3 


63.8 66.3 


60.9 


44.7 


33.7 


26.5 


43.8 


1907 


24 5 


23 7 39.9 


35.8 


46.9 


59.4 


67.5 64.1 


57.2 


43.2 


32 5 


28 2 


43 6 


1908 


. 21.7 


23.2 35.3 


43.0 


56.0 


62.2 


66.4 64.2 


58.6 


44.5 


35.1 


25.7 


44.7 


1909 


. 21.5 


26.1 31.3 


41.0 


51.3 


63.2 


63.9 67.1 


55.3 


41.7 


41.6 


14.9 


43.2 


1910 


21.9 


17.7 40.8 


42.9 


49.2 


61.2 


66 . 8 63 . 5 


58.1 


47.7 


29.1 


21 1 


43 3 


1911 


. 22.5 


28.4 32.4 


42.5 


58.0 


66.3 


66.4 63.5 


61.9 


46.4 


27.8 


28.6 


45.4 


1912 


8 2 


17.4 24.8 


44.6 


56.2 


59.4 


67 . 2 64 . 6 


58.4 


46.4 


34 8 


25 9 


42.3 


1913 


. 22.5 


19.0 28.2 


43.6 


53.5 


63.7 


69.1 69.0 


57.6 


45.3 


41.7 


32.6 


45.5 


1914 


28 3 


13 31 5 


44 8 


55 7 


65.9 


69 5 66.3 


57.9 


49 2 


36 6 


17 7 


44 7 


1915 


17 9 


31.8 29.3 


49.4 


50.7 


59.6 


65 . 2 59 . 8 


59.6 


47.4 


36.2 


24 5 


44 3 


1916 


. 20.8 


19.8 29.7 


42.2 


54.7 


58.7 


70.8 67.1 


55.3 


44.9 


35.6 


20.8 


43.4 


1917 


20 4 


15.1 32.8 


40.5 


48.5 


60.0 


66 . 2 62 . 7 


54.5 


38.2 


35 3 


15 2 


40 8 


1918 , 


. 5.8 


21.2 36.0 


39.4 


58.3 


62.9 


64.5 69.7 


50.6 


49.5 


36.4 


32.1 


43.9 


1919 


24 6 


25 33 4 


43 8 


51 4 


66 3 


68 6 63.3 


59 4 


48 5 


32 7 


17 1 


44 5 


1920 


. 16.1 


23.7 33.2 


38.4 


52.2 


62.1 


64.7 63.3 


59.7 


50.6 


32.9 


25 7 


43 6 


1921 


28 1 


30 8 38 7 


45 7 


56 4 


67 8 


70 4 65 1 


62.8 


46 5 


35 9 


27 7 


48 


1922 


16.8 


23 7 35.4 


45.0 


57.5 


64.2 


65.9 65.5 


59.1 


48.5 


38 4 


23 7 


45 3 


1923 


, . 28.8 


19.1 27.4 


40.9 


51.9 


64.6 


68 . 6 65 . 3 


58.2 


43.4 


37.1 


34.0 


44.9 


1924 


13 5 


24 1 30 8 


45 4 


47 7 


62 


63 3 64 9 


52 4 


49 9 


34 5 


17 7 


42 2 


1925 


. 19.3 


28.2 32.7 


47.9 


48.7 


65.4 


66 . 9 65 . 1 


64.4 


38.7 


31.2 


21.1 


44.1 


1926... 


. . 22.9 


29.2 27.2 


36.8 


54.2 


58.9 


66.8 67.6 


60.3 


47.3 


30.5 


22.8 


43.7 


1927. 


. 19.1 


31.9 37.7 


44.5 


53.1 


59 6 


65 . 5 60 . 2 


62.3 


49.7 


36 8 


20 


45 


1928 


, . 21.8 


26.8 33.2 


39.7 


52.5 


58.8 


68.6 66.5 


53.4 


49.9 


36.3 


27.2 


44.6 


1929 


11 5 


15 6 37 7 


46 2 


49 9 


59 8 


67.7 62 9 


55 8 


45 8 


30 3 


23 3 


42 2 


1930 


. 11.5 


32 . 6 29 . 7 


46.5 


54.4 


61.6 


68.2 66.9 


59.9 


44.8 


35 3 


26 1 


44 8 


1931 


26 9 


30 8 31 


44 3 


50 3 


66 9 


70 4 65 2 


63 8 


51 7 


44 


35 2 


48 4 


1932 


, . 29.6 


31.3 26.5 


43.7 


55.5 


64.7 


68.4 66.6 


56.7 


45.0 


28 6 


23 1 


45 


1933 


. 31.3 


21.6 32.9 


43.6 


56.3 


68.5 


69.1 64.6 


64.5 


44.6 


32.7 


28.0 


46.5 


1934 


. 26.6 


18 5 27.0 


43 9 


57.2 


69.0 


71 9 66 7 


56.0 


49 3 


39 9 


23 3 


45 8 


1935 


.22.1 


27 . 9 38 . 5 


42.0 


50.4 


60.9 


71.4 67.7 


58.2 


47.0 


34.1 


19.8 


45 


1936 


. . 14.2 


10.8 35.0 


40.1 


58.0 


61.3 


74.1 70 9 


63 3 


47 5 


31 5 


28 5 


44 6 


1937 


. . 19.6 


22.1 30.6 


43.3 


55.3 


63.7 


67.8 69.4 


55.8 


45.6 


30.2 


23.6 


43.9 


1938 


. 21.3 


32.3 40.7 


45.7 


54.5 


62.9 


69.5 69.0 


61.2 


50.5 


36.1 


26.4 


47.5 


1939 


. . 28.8 


22.0 34.5 


41.4 


57.3 


66.4 


69.2 64.9 


61.7 


47.4 


35.3 


28.6 


46.5 


1940 


.. 7.5 


25.8 31.9 


41.3 


51.2 


65.3 


67.6 67.1 


56.7 


51.3 


32.6 


30.5 


44.1 


1941... 


. . 25.0 


21.8 29.0 


48.8 


58.6 


66.2 


68.1 67.6 


60.8 


52.7 


37.1 


32.6 


47.4 


1942 


. . 20.6 


24.3 36.2 


47.5 


55.0 


65.4 


69.5 66.2 


58.1 


47.6 


37.3 


21.3 


45.8 


1943 


. . 20.0 


25.3 28.1 


41.1 


53.6 


67.8 


69.2 68.9 


54.3 


46.9 


32.2 


21.9 


44.1 


1944 


. . 26.7 


25.3 30.4 


41.6 


60.4 


67.4 


67.7 67.2 


59.5 


47.7 


39.8 


19.4 


46.1 


1945 


. . 18.3 


26.6 42.3 


45.7 


50.1 


61.4 


65.6 65.6 


69.1 


45.3 


34.7 


19.2 


45.3 


1946 


. . 23.8 


26.4 44.5 


46.9 


53.0 


64.0 


68.2 63.4 


57.2 


50.6 


37.9 


28.9 


47.1 


Aver 


. . 20.0 


22.5 32.4 


43.4 


53.6 


63.0 


67.3 65.1 


58.1 


46.7 


34.3 


24.6 


44.2 



174 BULLETIN NO. 532 [April, 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


URBANA, 


Champaign county 


1889 


20 4 


13 2 29 9 


37 4 


46 1 


55 3 


61 2 


56 1 


50 2 


36 2 


29 7 31 5 


38 9 


1890 


23 5 


26 . 5 23 . 5 


40.2 


46.9 


63.4 


59.0 


55 7 


48 1 


42 8 


32 6 20 9 


40 3 


1891 


. . 23.0 


22.3 24.0 


40.1 


42.4 


59.4 


55.2 


57.5 


53.3 


37.6 


26.3 27.5 


39.0 


1892 


8 9 


20 7 33 2 


38 


52 2 


60 4 


61 7 


59 2 


50 6 


39 7 


26 2 17 8 


39 


1893 




28.0 


39.9 


47.2 


59.4 


63.1 


56.5 


53.6 


40.4 


25.9 19.9 




1894 


. . 20.3 


15.6 32.9 


39 .,5 


47.7 


58.8 


57.6 


58.8 


54.4 


40.1 


24.3 25.1 


39.6 


1895 


9 1 


78 25 7 


40 4 


48.6 


58 7 


58 


59 


55 2 


31 8 


28 7 23 4 


37 2 


1896 


. 20.5 


21.5 24.6 


45.2 


56.5 


60.8 


63.0 


61.7 


52.2 


37.2 


30.9 26.3 


41.7 


1897 


. . 15.0 


24.0 31.0 


40.3 


46.7 




61.1 


58.0 


53.6 


43.0 


32.0 19.7 




1898 


. 25.3 


21.1 34.5 


38.1 


49.9 


61.7 


63.3 


62.1 


58.5 








1899 


. 17.8 


9.7 25.3 


41.9 


53.3 


62.7 


62.7 


61.9 


49.6 


44.9 


34.6 18.5 


40.9 


1900 , 


. 22 . 


13.3 24.3 


41.9 


51.4 


59.3 


63.7 


68.0 


56.6 


48.4 


31.0 22.4 


41.9 


1901 


19.7 


12.0 29.8 


38.6 


48.4 


61.7 


67.2 


61.5 


52.6 


42.2 


27.0 17.7 


39.9 


1902 


. 17.2 


7.4 33.2 


37.1 


54.0 


58.5 


63.9 


60.0 


52.1 


45.3 


38 . 9 19 . 8 


40.6 


1903 


15 7 


17 1 33 8 


38 9 


51.9 


55.0 


63.7 


60 7 


52 1 


42 3 


26 3 12 7 


39 2 


1904 


. 8 8 


13.2 30.0 


34.3 


49.9 


57.4 


61.2 


57.9 


54.7 


40.4 


29.9 18.5 


38.0 


1905 


. 10.1 


7.1 33.3 


39.3 


54.6 


58.3 


63.5 


63.2 


56.3 


40.2 


29.7 21.1 


39.7 


1906 


23 7 


17 2 22.5 


41.5 


49.4 


57.2 


60.8 


63.9 


57.0 


42.9 


31.1 25 4 


41.0 


1907 


. 23.3 


20.8 36.6 


33.6 


45.0 


56.4 


63.5 


64.5 


54.6 


39.7 


27.3 25.2 


40.9 


1908 


. 19.8 


19.6 32.8 


40.2 


52.8 


58.7 


60.4 


61.3 


55.5 


41.7 


32.5 23.0 


41.5 


1909 


20 6 


24 29 5 


39.3 


48.4 


59.3 


61.3 


63.7 


53 2 


34.9 


39 4 12.1 


40 5 


1910 


20 4 


16.5 37.4 


40.5 


47.3 


57.8 


64.4 


59.6 


55.3 


44.6 


26.5 18.3 


40.7 


1911 


21 2 


26 5 28 9 


40 


55 8 


62 


63.6 


61.5 


58.7 


44 2 


27 2 27.2 


43 1 


1912 


5 8 


14 7 23.0 


42.5 


54.0 


56.9 


65.2 


61.8 


56.9 


43.7 


32.8 23.5 


40.1 


1913 


. 22.2 


15.3 26.8 


40.8 


51.6 


61.7 


66.3 


65.9 


62.5 


43.8 


39.7 31.0 


44.0 


1914 


27 


12 29 4 


43 5 


58 3 


69 2 


70 9 


67 3 


54 5 


47 6 


33 2 14 7 


44 


1915 


. 15 7 


29 8 28 


46.1 


49.4 


58.0 


63.3 


58 3 


58.0 


43.6 


34.1 23 2 


42.3 


1916 


. 20.4 


18.3 26.8 


39.9 


52.9 


57.9 


68.6 


65.5 


52.9 


42.7 


34.0 18.2 


41.5 


1917 


19 8 


14 2 31 6 


39 1 


44.8 


57.5 


63.1 


60.4 


51.9 


35 5 


33.4 13.6 


38.7 


1918 


. 3 5 


20 . 3 33 . 8 


38.3 


56.1 


59.7 


61.2 


66.2 


48.1 


47.1 


33 . 8 30 . 8 


41.6 


1919 


22 3 


23 4 31 9 


40 7 


49 2 


63 6 


65 3 


60 8 


57 4 


47 7 


30 9 16 2 


42 4 


1920 


12 6 


21 7 31 1 


36.2 


49 7 


60 2 


61 9 


60 2 


57.2 


47 9 


32 . 1 23 . 6 


41.2 


1921 . . . , 


. 26.9 


28.4 37.6 


44.0 


53.4 


65.2 


68.1 


62.4 


60.7 


43.9 


33.8 26.6 


45.9 


1922 


14 5 


23 4 34 


42.9 


55 6 


61 6 


63 4 


62.3 


56 8 


45.8 


35 2 22.2 


43.1 


1923 


26 2 


16 8 26.2 


38.4 


49.0 


62.1 


65.1 


62.0 


55.9 


41.4 


34.3 32.3 


42.5 


1924 


. 10.7 


22.2 29.2 


41.6 


45.2 


58.8 


60.9 


62.9 


51.0 


47.1 


32.9 15.8 


39.9 


1925 


15 9 


26 8 30 8 


45 1 


45 5 


63 7 


64 4 


62 4 


62.3 


38.0 


30.1 19.9 


42.1 


1926... 


. 20.2 


27.1 24.7 


34.8 


52.3 


56.4 


64.5 


66.3 


58.6 


44.8 


29.3 20.8 


41.6 


1927 


. 17.6 


29.9 35.4 


42.8 


51.0 


56.7 


63.0 


57.3 


59.6 


47.7 


35.7 19.9 


43.0 


1928 


. 19.7 


24.5 30.3 


36.4 


50.0 


56.5 


64.7 


64.0 


50.3 


47.7 


35.3 25.8 


42.1 


1929 


. 11.6 


15.0 36.9 


44.5 


48.9 


58.5 


67.6 


60.0 


54.2 


43.2 


28.8 21.0 


40.8 


1930 


12 6 


31 2 28 5 


43 


52 7 


58 6 


65 5 


63 9 


58.0 


47.1 


32.9 24.2 


43.2 


1931... 


. 24.6 


29.6 29.2 


42.2 


48.3 


63.2 


67.6 


63.5 


61.5 


49.9 


42.2 32.9 


46.2 


1932 


29 1 


29 3 24 5 


41 2 


52 1 


62 3 


65 7 


63.3 


54 6 


44.0 


27.0 21.5 


42.9 


1933 


. 29.6 


20.0 31.9 


41.6 


54.6 


64.8 


66.5 


62.0 


61.5 


42.9 


30.7 26.3 


44.4 


1934 


. 25.6 


15.7 25.9 


40.7 


54.1 


66.3 


68.9 


64.0 


55.7 


47.1 


37.8 21.5 


43.6 


1935 


21 5 


26 5 37.3 


39 9 


47 6 


58 4 


68 


65.2 


54.9 


45.3 


33.6 18.4 


43.1 


1936... 


. 12.5 


9.8 33.7 


36.9 


54.6 


58.2 


70.2 


67.8 


60.1 


44.9 


29.5 26.2 


42.0 


1937 


. 20.3 


21.0 28.8 


41.1 


52.2 


60.7 


64.1 


66.2 


53.8 


43.0 


28.5 22.6 


41.9 


1938 


. 20.4 


31.0 38.3 


43.4 


51.4 


60.3 


66.1 


65.8 


58.5 


47.2 


34.1 24.3 


45.1 


1939 


. 26.4 


21.4 32.2 


37.9 


53.8 


64.1 


65.4 


61.7 


58.2 


44.5 


32.7 26.1 


43.7 


1940 


. 7.1 


25.1 29.3 


39.4 


48.5 


62.0 


64.0 


63.9 


53.3 


48.1 


30.7 28.7 


41.7 


1941 


. 23.5 


20.0 27.2 


46.2 


54.9 


62.5 


64.4 


63.2 


58.2 


49.8 


35.2 31.1 


44.7 


1942 


. 19.3 


21.6 34.2 


44.2 


52.4 


61.7 


66.2 


62.4 


54.9 


45.6 


35.4 17.3 


42.9 


1943 


. 20.6 


22.9 26.2 


38.3 


51.2 


65.1 


65.6 


65.4 


51.4 


44.1 


30.0 20.8 


41.8 


1944 


. 24.4 


23.7 28.2 


40.0 


57.2 


64.3 


63.1 


63.4 


56.5 


43.4 


37.7 16.7 


43.2 


1945 


. 16.0 


25.1 40.5 


42.8 


47.7 


58.5 


61.9 


62.4 


57.4 


41.9 


33.3 16.6 


42.0 


1946 


. 20.4 


24.1 41.3 


43.0 


49.7 


60.1 


63.6 


59.2 


54.3 


47.7 


36.6 26.9 


43.9 


Aver 


. 18.8 


20.3 35.0 


40.4 


50.8 


60.3 


63.9 


62.1 


55.3 


43.5 


32.0 22.4 


42.1 



1949] CLIMATE OF ILLINOIS: APPENDIX A 175 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, Alexander county 


1872... 






34.0 


52.8 59.8 


67.2 


72.1 71.7 


61.2 


47.7 


32.5 


20.8 




1873 


. . 22.2 


29.5 


36.4 


46.0 59.3 


69.4 


70.1 68.9 


58.5 


44.2 


34.5 


33.3 


47.8 


1874 


. . 31.9 


33.0 


39.2 


42.5 61.6 


70.1 


71.5 70.7 


63.4 


49.8 


39.1 


32.7 


50.6 


1875 


. 20.3 


22.6 


36.2 


45 . 5 56 . 4 


66.4 


72.3 67.0 


59.9 


45.7 


38 5 


38 9 


47 6 


1876... 


. . 35.2 


33.2 


34.1 


50.6 59.6 


66.3 


72.4 71.1 


61.1 


46.8 


36.1 


17.3 


48.7 


1877 . . . 


24 9 


35 


33.5 


49.9 56.8 


67.4 


71.0 68.6 


62 8 


53 8 


38 3 


43 1 


50 5 


1878 


. . 32.5 


37.5 


48.8 


55.4 59.6 


66.4 


75.0 72.6 


61.1 


49.9 


41.0 


25.8 


52.2 


1879 


. . 25.8 


29.6 


43.0 


49.1 62.0 


66.3 


74.2 67.5 


58.1 


57.6 


44.4 


32.8 


51.0 


1880 


. . 43.6 


37.6 


42.4 


54.0 63.2 


68.3 


70.8 70.6 


60.2 


50.0 


30 


24.7 


51 3 


1881... 


. . 21.7 


30.1 


36.6 


47.2 65.6 


69.4 


73.7 73.0 


66.1 


57.3 


38.7 


38.1 


51.6 


1882 


31.8 


42.1 


44.3 


53.0 56.9 


68.3 


69.7 68 9 


62.2 


57 6 


42 6 


30 


52 3 


1883 


, . 24.3 


30.7 


37.1 


51.7 56.5 


67.8 


70.2 67.2 


59.6 


53.7 


42.4 


33.9 


49.7 


1884 


19 2 


33 8 


41 


49 3 59 


67 4 


70 6 67 4 


66 8 


55 5 


41 3 


29 7 


50 1 


1885 


. 22.1 


23.6 


34.9 


51.6 58.3 


66.6 


72 . 9 69 . 4 


62.8 


48 6 


40 1 


30 4 


47 8 


1886... 


. 17.4 


26.9 


37.5 


50.9 60.8 


65.9 


70.0 69.6 


63.4 


49.8 


37.1 


24.5 


47.9 


1887 . 


. 24 9 


35.3 


40.4 


50.2 62.5 


66.5 


71.9 68.2 


62 8 


46 1 


35 6 


29 1 


49 6 


1888 


. 24.5 


29.9 


36.5 


52 . 5 56 . 6 


66.2 


71.9 68.3 


58.4 


46.9 


40.3 


33 


48.8 


1889 


. 31.5 


28.2 


40.5 


49.8 56.5 


62.8 


70.0 66.8 


58.3 


47.3 


38.8 


46.2 


49.9 


1890 .... 


. 37.5 


37.6 


36.3 


52 . 4 57 . 3 


70.9 


69.4 66 8 


60 


50 5 


42 5 


33 3 


51 2 


1891... 


. 32.6 


35.0 


36.7 


52.2 55.9 


69.0 


66.5 65.3 


62.3 


47.5 


37.1 


38.1 


49.8 


1892 


21 2 


37.4 


36.6 


51.2 58.9 


68.8 


68 7 67 9 


59 7 


50 


36 1 


29 4 


48 8 


1893 


. . 20 . 7 


27.9 


39.0 


51.8 57.3 


67.0 


71.9 67.1 


62.3 


48.8 


38.1 


32 8 


48 7 


1894 


, . 32.3 


29.1 


43.9 


50.5 57.4 


65.9 


67.9 68.3 


63.0 


50.4 


36.3 


33.9 


49.9 


1895 


. 24.4 


20.1 


38.8 


51.0 57.7 


68.5 


68.9 69.3 


65.0 


43.6 


38.9 


33.6 


48.3 


1896 


. 31.4 


32.5 


36.6 


57.6 63.9 


66.6 


71.3 70.2 


60.3 


48.4 


41.7 


35.4 


51.3 


1897 


. 27.3 


33.8 


42.8 


50.4 55.5 


65.9 


71.6 68.2 


64.3 


54.5 


40.5 


30.5 


50.4 


1898 


. 34.3 


33.0 


42.4 


47.4 60.5 


69.5 


70.9 69.8 


65.8 


49.5 


36.8 


28.5 


50.7 


1899 


. 27.9 


19.0 


35.3 


50.9 62.6 


68.5 


69.5 72.6 


60.4 


54.5 


44.6 


29.0 


49.6 


1900 


. 31.8 


25.1 


37.0 


50.4 59.3 


67.2 


71.2 73.1 


67.8 


56.6 


40.7 


33.8 


51.2 


1901 


. 31.6 


26.8 


38.6 


46.0 56.7 


68.7 


73.2 68.6 


61.5 


50.6 


36.5 


25.3 


48.7 


1902 


. . 27.2 


23.0 


41.3 


48.0 64.2 


67.3 


71.0 68.6 


59.1 


53.0 


47.8 


30.5 


50.1 


1903 


. . 29 . 6 


30.1 


45.1 


49.7 60.6 


61.8 


71.5 69.2 


61.0 


50.4 


36 


26 2 


49 3 


1904 


. 25.4 


27.7 


39.8 


44.4 58.5 


66.5 


68.0 67.6 


63.7 


49.0 


39.5 


31.3 


48.4 


1905 , 


. 20.7 


20.3 


44.1 


49.6 61.7 


68.0 


68.8 69.7 


64.1 


50.4 


39.9 


31.5 


49.1 


1906... 


, . 32.1 


27.1 


33.4 


53.4 58.6 


66.1 


68.7 70.3 


67.1 


49.6 


38.1 


34.1 


49.9 


1907 


. 35.1 


30.9 


49.3 


42.9 53.5 


65.0 


71.1 69.6 


61.5 


48.6 


38.7 


34.5 


50.1 


1908 


. . 29.6 


32.1 


45.4 


50.0 60.8 


67.1 


70.4 70.0 


63.5 


48 3 


42 4 


34 2 


51 2 


1909 


, . 30.2 


34.9 


40.2 


48.2 57.1 


68.3 


71.2 71.9 


60.7 


48.8 


48.2 


24.1 


50.3 


1910 


. 28.7 


25.6 


48.4 


48.4 55.7 


63.6 


70.6 67.9 


64.4 


51.9 


35.9 


28.1 


49.1 


1911... 


. . 32.6 


34.9 


39.8 


49.9 62.3 


69.5 


69.6 68.7 


67.6 


52.1 


33.5 


35.5 


51.3 


1912 


, . 18.4 


24.2 


35.1 


52.3 60.7 


63.8 


71.6 68.1 


63.4 


51.6 


40.0 


31.7 


48.4 


1913 


, . 31.8 


29.4 


37.7 


50.3 59.5 


67.4 


71.5 71.3 


62.2 


49.1 


45.9 


36.1 


51.0 


1914 


, . 34.3 


24.9 


37.0 


49.7 59.4 


71.5 


73.0 70.0 


62.2 


53.5 


41.3 


27.0 


50.3 


1915 


, . 26.9 


36.8 


33.5 


53.9 59.2 


66.0 


69.2 65.5 


65.5 


53.5 


43.5 


32.3 


50.5 


1916... 


. . 31.4 


29.9 


36.9 


48.8 61.3 


64.9 


73.8 71.3 


60.4 


49.6 


41.0 


29.2 


49.9 


1917 


. . 30.7 


25.2 


41.2 


48.8 42.7 


65.4 


69.7 67.7 


61.2 


43.5 


39.1 


20.5 


47.1 


1918 


. . 13.3 


30.3 


43.1 


46.4 62.5 


68.5 


68.8 72.2 


55.1 


54.5 


40.5 


38.5 


49.5 


1919 


,. 31.6 


31.3 


41.0 


51.3 57.6 


69.8 


72.3 68.5 


64.2 


57.5 


39.2 


26.5 


50.9 


1920 


. . 26.5 


30.9 


39.3 


46.4 59.2 


65.6 


69.4 66.8 


64.4 


53.9 


36.6 


33.2 


49.4 


1921 


. . 34.4 


35.5 


48.1 


49.7 59.6 


70.4 


73.8 69.6 


67.7 


48.9 


42.4 


34.3 


52.9 


1922 


. . 27.1 


33.4 


42.2 


52.6 62.9 


69.6 


70.6 69.0 


64.0 


51.9 


42.0 


32.7 


51.5 


1923 


. . 35.7 


27.1 


34.9 


48.7 56.9 


67.3 


71.1 70.2 


62.9 


48.0 


40.8 


40.5 


50.3 


1924 


. . 22.7 


30.2 


35.4 


50.4 52.7 


67.8 


67.8 69.6 


57.8 


53.9 


40.6 


26.3 


47.9 


1925 


. . 29.2 


42.4 


41.5 


55.2 54.1 


71.1 


71.1 68.5 


69.1 


46.6 


39.0 


28.1 


50.8 


1926... 


. . 29.3 


35.0 


34.2 


43.7 58.5 


64.6 


70.3 70.4 


66.2 


53.4 


34.7 


30.3 


49.2 


1927 


. . 29.4 


39.6 


42.8 


53.2 59.9 


65.8 


69.5 66.0 


66.4 


52.9 


43.4 


28.5 


51.4 


1928 


. . 28.9 


32.4 


38.1 


45.2 57.6 


63.3 


72.2 70.9 


58.8 


54.7 


40.4 


32.6 


49.6 


1929 


. . 24.2 


24.4 


45.1 


53.8 57.3 


65.9 


71.0 66.8 


62.2 


50.9 


37.7 


32.9 


49.4 


1930 


. . 23.1 


40.0 


37.7 


53.2 60.0 


66.2 


72.4 69.0 


64.9 


50.0 


41.1 


30.6 


50.7 



176 BULLETIN NO. 532 [April, 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, Alexander county, 


concluded 


1931... 


. 31.3 


35.6 


36.1 


49.5 54.8 69.3 


72.0 


68.1 


67.6 


55.6 


48.9 


41.5 


52.5 


1932 


36 6 


40 5 


34 


51.8 59.1 69 2 


72 4 


70 


62 3 


49 


35 4 


29 9 


50 8 


1933 . . . 


. 38.2 


29.5 


39.5 


50 . 6 62 . 6 69 . 6 


71.4 


68.6 


69.0 


50.1 


39.3 


35 7 


52 


1934 


33 4 


25 3 


35 


50 60 6 70 5 


73 1 


70 9 


60 4 


53 3 


43 7 


30 8 


50 6 


1935 


30 6 


33 7 


46 5 


49 . 3 57 . 2 64 . 8 


72.9 


71 5 


61.8 


52.8 


39 8 


26 4 


50 6 


1936 


. 23.5 


22.7 


42.2 


46.4 62.0 66.8 


73.6 


73.9 


67.1 


51.3 


34.9 


34.3 


49.9 


1937 


32 1 


30 2 


36 2 


49' 5 61 69 6 


71 2 


73 3 


61 2 


49 


37 6 


29 5 


50 


1938 


.29.1 


40 2 


47.0 


52.5 60.1 65.9 


72.2 


72.5 


63.2 


52.3 


40.1 


31 7 


52 2 


1939 


. 35.6 


30.1 


42.9 


47.6 60.7 68.6 


71.5 


68.9 


66.4 


52.7 


38.0 


33.8 


51.4 


1940 


14 2 


30 5 


38 8 


47 9 55.6 66 8 


69 3 


69 9 


59 7 


53 4 


38 8 


36 


48 4 


1941... 


. 31.8 


28.1 


33.8 


53.5 61.0 68.4 


72.4 


71.3 


65.2 


57.4 


39.9 


36.3 


51.6 


1942 


25 9 


30 4 


41 


52 7 58 3 68 2 


72 8 


69 2 


61 4 


51 4 


43 8 


31 2 


50 5 


1943 


. 28 4 


32 1 


34 4 


48.7 60.5 71.4 


72.5 


71.8 


59.4 


49.4 


36.2 


29 6 


49 5 


1944 


. 31.4 


35.4 


37.7 


49.8 63.0 70.7 


69.3 


70.2 


63.2 


49.8 


43.4 


27.6 


51.0 


1945 


27 1 


32 4 


48 5 


53 55 65 4 


69 5 


69 3 


64 2 


50 3 


41 8 


26 6 


50 3 


1946 


. 31.8 


35.3 


50 2 


53.2 57.1 67 9 


71.0 


66.7 


61.7 


52.8 


43.4 


36.4 


52 3 


Aver 


28.5 


31.0 


39.7 


50.1 59.0 67.4 


71.0 


69.4 


62.7 


51.0 


39.7 


31.6 


50.1 










ST. LOUIS, 


Missouri 


1873... 








42.0 55.8 69.3 


69.3 


69.0 


" 58.0 


42.9 


32.2 


28.9 




1874 


27 1 


28 9 


34 6 


38 4 59.1 69.2 


72 6 


69 8 


61 5 


49.8 


35.1 


29.0 


47.9 


1875 . . 


14.7 


15.1 


30.9 


41.4 54.3 63.4 


70.9 


64.1 


58.0 


43.9 


31.9 


34.8 


43.6 


1876 


31 2 


30 4 


32 


48 1 58 6 75 7 


72 1 


71 2 


60 5 


46 9 


34 2 


15 7 


47 2 


1877 


22 5 


33 9 


29 7 


46 3 55.6 65 5 


70 1 


67.4 


61.8 


52.6 


36.1 


42.7 


48.7 


1878 


. 30.0 


34.8 


46.0 


53.1 55.8 65.2 


73.7 


71.0 


59.4 


48.3 


39.4 


21.4 


49.8 


1879 


18 9 


24 8 


39 5 


45 58 4 63 8 


71 2 


66 2 


55 7 


54 7 


39 1 


25 3 


46 9 


1880 


37 8 


30 3 


35.2 


48 1 60 4 65.6 


68.9 


68.8 


58.5 


46.4 


26.0 


21.6 


47.3 


1881 


14 6 


23 4 


31 


43 1 62 3 66 5 


71 7 


72 2 


65 3 


53 5 


35 5 


34 3 


47 8 


1882 


26 1 


35 8 


37 3 


49 6 51 64 6 


66 2 


67 3 


60.0 


53 


38 8 


25.7 


48.0 


1883 


. 15.8 


22.6 


31.3 


46.8 52.7 64.0 


68.3 


65.2 


57.4 


50.0 


41.6 


31.8 


45.6 


1884 


17 3 


27 4 


36 6 


46 5 56 8 66 4 


70 9 


67 3 


67 4 


55 5 


37 8 


26 1 


48 


1885 


16 7 


16 7 


32 5 


48 2 57 5 66 6 


74.1 


68 1 


62 


48.5 


40.4 


30.3 


46.8 


1886... 


. 16.2 


27.4 


36.8 


51.6 60.5 67.1 


72.1 


70.4 


64.0 


52.4 


37.8 


21.3 


48.1 


1887 


20 5 


31 3 


37 1 


51 1 63 4 68 8 


75 4 


70 6 


61.1 


43 3 


34 6 


23.7 


48.4 


1888 


16 2 


24 4 


31 1 


48 4 53.7 65.0 


71.0 


66.8 


57.0 


45.3 


38.0 


31.2 


45.7 


1889 


. 27.4 


22.5 


37.9 


48.4 54.4 62.1 


69.6 


66.0 


58.4 


46.7 


35.3 


41.6 


47.5 


1890 


31 1 


32 


30 7 


48 2 54 2 69 6 


70 


66 4 


57 2 


49 3 


40 5 


31.0 


48 4 


1891... 


. 30.5 


27.9 


32.0 


50.0 54.3 67.3 


66.0 


66 ?. 


63.8 


47.9 


35.1 


34.7 


48.0 


1892 


. 18.5 


33.4 


33.3 


46.6 55.3 68.8 


69.6 


69 ?, 


60.7 


51.0 


35.2 


27.2 


47.4 


1893 


. 16.4 


23.1 


35.1 


48.5 55.4 66.6 


71.8 


R6 7 


63.4 


49.1 


35.8 


28.6 


46.7 


1894 


. 28.1 


25.0 


41.8 


49.2 57.1 67.7 


69.3 


69.0 


62.2 


50.6 


33.9 


32.7 


48.9 


1895 


. 19.0 


18.1 


35.2 


50.3 57.0 68.1 


68.1 


69.3 


64.8 


43.8 


36.2 


30.9 


46.7 


1896... 


. 28.5 


29.1 


32.4 


54.8 63.9 65.4 


70.4 


70.1 


59.0 


47.6 


38.1 


34.2 


49.5 


1897 


. 24.4 


30.2 


38.7 


47.7 54.7 66.4 


72.2 


67 4 


65.9 


55.3 


37.4 


26.5 


48.9 


1898 


. 30.6 


29.8 


38.7 


46.2 58.3 69.5 


70.5 


70 3 


65.2 


48.5 


34.8 


24.9 


48.9 


1899 


. 24.6 


15.8 


30.4 


49.1 60.5 68.9 


70.8 


72.5 


60.3 


54.8 


44.5 


26.3 


48.2 


1900 


. 29.9 


21.3 


33.6 


49.4 60.1 66.8 


70.7 


75.4 


65.6 


56.8 


39.0 


31.4 


50.0 


1901 


. 29.7 


24.4 


37.2 


45.9 57.3 70.8 


76.9 


70.0 


61.5 


51.9 


35.4 


23.7 


48.7 


1902 


. 25.8 


19.7 


39.7 


46.5 62.6 65.6 


71.9 


68,2 


58.0 


53.1 


46.8 


28.0 


48.8 


1903 


. 26.6 


26.1 


41.5 


48.1 61.0 62.6 


72.7 


68.9 


60.1 


50.6 


33.4 


21.0 


47.7 


1904 


. 19.8 


22.1 


35.9 


40.7 56.7 65.0 


67.9 


66.1 


62.3 


49.7 


39.7 


26.2 


46.0 


1905 


. 16.7 


14.8 


40.1 


46.8 58.1 66.9 


68.0 


68.9 


63.2 


48.5 


38.1 


28.3 


46.5 


1906... 


. 28.7 


23.8 


28.1 


50.5 57.3 64.1 


68.0 


69.9 


64.9 


47.9 


37.0 


29.5 


47.5 


1907 


. 27.7 


26.4 


43.7 


38.8 49.8 63.3 


70.5 


68.6 


60.4 


47.1 


36.7 


31.6 


47.0 


1908 


. 26.0 


26.9 


40.4 


47.1 58.5 65.4 


70.0 


68.7 


64.2 


48.4 


39.9 


30.4 


48.8 


1909 


.25.2 


30.6 


35.0 


44.3 54.9 66.7 


69.2 


72.1 


59.3 


46.8 


45.6 


19.4 


47.4 


1910 


. 25.4 


20.4 


46.7 


46.6 52.5 63.9 


69.1 


67.3 


62.4 


51.5 


33.5 


24.8 


47.0 



1949] CLIMATE OF ILLINOIS: APPENDIX A 177 

Table 6. Average Minimum Monthly and Annual Temperatures 

(Concluded) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 








ST 


. LOUIS, 


Missouri, concluded 


1911... 


. . 26.5 


30.3 


36.3 


45.8 61.7 


70.1 


70.5 


67.7 


65.7 


50.2 


30.9 32.1 


49.0 


1912 


. . 12.9 


20.8 


28.3 


48.2 59.5 


62.2 


70.4 


68.0 


62.7 


51.4 


39.3 30.1 


46.2 


1913 


, . 26.0 


24.3 


32.3 


47.7 57.6 


68.2 


72.0 


73.3 


61.5 


48.5 


45.0 35.6 


49.3 


1914 


, . 31.6 


18.4 


35.5 


48.0 59.4 


70.9 


73.6 


69.6 


61.6 


53.0 


41.4 22.6 


48 8 


1915 , 


. 22.5 


34.4 


32.1 


53.7 56.2 


63.0 


68.1 


62.9 


63.7 


52.3 


41.7 28.8 


48.3 


1916... 


. 25.0 


24.6 


34.6 


45.9 58.8 


63.2 


75.0 


70.0 


59.3 


49.4 


40.3 25.8 


47.7 


1917 


. 25.9 


19.6 


37.3 


44 . 6 52 . 1 


64.4 


69.7 


67.2 


60 


41 7 


40 19 5 


45 2 


1918 


. 11.9 


26.1 


41.5 


43.7 61.9 


68.6 


69.1 


73.7 


55.5 


54.2 


39.8 36.0 


48.5 


1919 


. 29.7 


28.5 


37.9 


48.2 55.2 


68.5 


72.3 


67.7 


64.2 


53.2 


36.6 21.7 


48.6 


1920 


. 21.4 


27.4 


37.3 


42.5 57.0 


66.5 


69.4 


66.6 


64.6 


55.0 


36.2 30.2 


47.8 


1921... 


. 32.3 


34.3 


43.5 


48.6 60.1 


69.8 


74.1 


68.6 


66.3 


50.1 


39.1 31.2 


51.5 


1922 


. 22.0 


28.1 


38.2 


48.7 61.1 


69.0 


69.9 


70.0 


63 8 


52 9 


41 6 28 2 


49 5 


1923 


. 32.7 


22.7 


30.7 


45.0 55.6 


67.3 


72.1 


69.3 


61.5 


47.2 


40.7 37.0 


48.5 


1924 


. 18.1 


28.2 


33.5 


48.8 51.0 


65.0 


66.9 


69.0 


56.0 


54.9 


38.8 21.7 


46.0 


1925 


.25.1 


32.5 


37.9 


52.7 53.5 


69.0 


70.6 


69.2 


68 9 


43 2 


35 5 25 4 


48 6 


1926... 


. 27.2 


32.5 


31.8 


40.7 58.7 


63.3 


72.1 


70.5 


63.4 


50.2 


32.5 25.5 


47.4 


1927 


. 24.1 


35.1 


40.2 


49.2 56.6 


63.3 


68.7 


63.9 


66.5 


53.1 


39.9 23.5 


48.7 


1928 


. 26.6 


29.6 


36.4 


43.6 57.2 


60.5 


71.4 


69.1 


57.9 


53.5 


38.8 31.0 


48.0 


1929 


. 17.7 


20.7 


41.1 


49.5 53.8 


64.1 


71.3 


67.3 


60.0 


50.7 


34 . 7 30 . 4 


46 8 


1930 


. 16.9 


37.0 


34.8 


52 . 58 . 2 


65.5 


73.3 


71.2 


63.5 


49 


38 8 29 1 


49 1 


1931... 


. 30.0 


33.9 


33.7 


47.8 53.6 


69.8 


72.5 


68.1 


67.7 


54.8 


47.0 38.8 


51.5 


1932 


. 32.4 


35.7 


30.1 


48.5 58.3 


68.9 


72.6 


69.0 


60 7 


47 7 


32 4 26 6 


48 6 


1933 


. 35.1 


26.5 


36.0 


46.4 58.5 


71.5 


72.0 


68.2 


67.7 


48.0 


36.7 31.4 


49.8 


1934 


. 30.2 


22.8 


31.0 


47.2 60.8 


72.0 


76.5 


70.3 


57.8 


53.3 


41.9 26.7 


49.2 


1935 


. 25.8 


30.4 


41.8 


45.0 53.8 


62.8 


73.8 


69.8 


61 5 


50 2 


36 4 23 6 


47 9 


1936... 


. 18.5 


15.8 


39.3 


42.4 61.7 


66.2 


77.0 


75.2 


65.8 


50.4 


34.2 31.5 


48.2 


1937 


. 22.8 


25.0 


33.3 


46.1 58.7 


66 8 


71 


73.2 


60 2 


48 4 


34 26 4 


47 2 


1938 


. 25.1 


35.2 


43.7 


48.7 57.5 


65.5 


72.4 


72.5 


64.7 


54.5 


38.7 29.6 


50.7 


1939 


. 34.0 


25.1 


38.3 


44.3 59.8 


68.1 


71.4 


67.8 


66.3 


51.9 


38.3 31.5 


49.7 


1940 


. 9.8 


28.0 


35.5 


45.2 54.5 


67.2 


70.4 


69.7 


61.4 


55.3 


36.0 33.4 


47.2 


1941... 


. 28.7 


25.5 


32.0 


52.2 61.4 


68.5 


71.4 


71.3 


64.3 


56.0 


39.5 35.0 


50.5 


1942 


. 23.9 


27.4 


38.3 


50.4 56.7 


67.4 


72.3 


69.2 


60.6 


51.1 


40.8 26.8 


48.7 


1943 


. 23.6 


29.2 


31.3 


45.5 56.7 


69.7 


73.3 


72.1 


59.0 


49.9 


35.2 26.0 


47.6 


1944 


. 30.5 


29.7 


32.8 


45.2 62.3 


69.8 


70.5 


69.9 


62.3 


51.0 


41.1 23.3 


49.0 


1945 


. 22.9 


28.8 


44.9 


48.5 52.5 


62.8 


69.3 


69.0 


62.6 


49.0 


38.2 22.1 


47.6 


1946 


. 26.7 


30.9 


47.8 


51.5 54.7 


67.1 


71.1 


66.1 


60.6 


52.8 


41.1 32.9 


50.3 


Aver 


. 24.4 


26.7 


36.2 


47.2 57.3 


66.6 


71.1 


69.0 


61.9 


50.3 


38.2 28.5 


48.1 



178 BULLETIN NO. 532 [April, 

Table 7. Monthly and Annual Highest Temperatures 
( Fahrenheit) 



Year Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 


CHICAGO, Cook county 


1871... . 62 


56 
52 
53 
56 
45 

63 
58 
55 
51 
63 

53 
62 
57 
53 

47 

56 
58 
47 
48 
59 

58 
49 
46 
48 
61 

58 
44 
60 
49 
62 

35 
48 
49 
53 
47 

54 
53 
50 
57 
51 

58 
50 
62 

48 
59 

50 
50 
61 
52 
49 

66 
68 
44 
44 
62 

53 
56 
52 
47 
67 


67 
45 
60 
64 
73 

69 
65 
68 
71 
60 

48 
63 
62 
59 

58 

70 
68 
64 
68 
56 

57 
53 
69 
74 

80 

58 
58 
68 
64 
55 

68 
65 
74 
65 
75 

56 
80 
71 
55 
81 

73 
56 
65 
65 
57 

72 
76 
74 
68 
73 

78 
66 
65 
63 
76 

71 
71 
77 
71 
73 


80 
81 
83 
67 
72 

70 
78 
75 
80 
80 

77 
76 
78 

77 
76 

81 
82 
83 
73 
75 

75 
78 
84 
84 
81 

84 
78 
76 
88 
79 

83 
83 

78 
79 

77 

80 
70 
76 

74 
86 

70 
75 
80 

81 

88 

77 
82 
76 
75 
73 

81 
74 
79 
76 
86 

87 
79 
75 
84 
90 


84 
83 
87 
89 
79 

87 
86 
78 
87 
85 

87 
76 
80 . 
78 
80 

82 
86 
81 
88 
86 

81 
76 
83 

88 
94 

89 
81 
79 
83 
86 

87 
86 

85 
87 
84 

90 
83 
87 
86 

78 

94 
88 
85 
92 

86 

90 
88 
89 
83 

82 

93 
83 
79 
84 
94 

85 
86 
90 
90 
86 


87 
98 
92 
95 

89 

88 
87 
85 
87 
91 

89 
88 
84 
86 

88 

87 
96 
90 
86 
92 

88 
91 
85 
93 
95 

89 
93 
90 
90 

88 

97 
91 
90 
88 
91 

93 
91 
93 

87 
91 

98 
87 
99 
95 

88 

88 
86 
93 
88 
95 

95 
95 
96 
94 
96 

84 
94 
86 
90 
97 


92 
97 
93 
99 

88 

93 
91 
97 
93 
95 

93 
90 
91 
89 

94 

94 
100 
94 
90 
93 

87 
94 
94 
96 
92 

93 
95 
94 
90 
92 

103 
90 
92 
94 
95 

92 
90 
96 
92 
97 

102 
92 
99 
99 

88 

102 
98 
93 
96 
98 

97 
93 
95 
91 

98 

96 
95 
92 
93 
101 


90 
93 
92 

98 
86 

92 
89 
91 
91 
93 

98 
87 
89 
91 

85 

92 
98 
91 
88 
96 

96 
93 
95 
95 
93 

98 
90 
93 
91 

94 

90 
86 
92 
90 
92 

92 
92 
96 
93 

89 

92 
95 
97 
96 
86 

97 
90 
102 
98 
90 

91 
92 
89 
92 
96 

94 
86 
94 
93 

98 


87 
93 
88 
89 

87 

78 
86 
87 
83 
85 

94 

87 
84 
89 
81 

86 
92 
88 
84 
88 

91 
88 
95 
90 
92 

88 
94 
92 
98 
90 

87 
81 
86 
87 
86 

89 
92 
92 
89 

83 

86 
94 
97 
88 
90 

89 
86 
82 
93 
90 

88 
98 
80 
90 
95 

87 
95 
88 
91 
89 


75 
81 
75 
78 
73 

73 
80 

79 
84 

78 

77 
77 
78 
83 
69 

79 
82 
76 
79 
73 

86 
80 
81 
76 

71 

75 
87 
75 
84 
86 

85 
76 
83 
78 
83 

75 
81 
82 
76 

84 

79 
84 
83 
81 
79 

87 
69 
80 
85 
82 

79 
87 
76 
81 
70 

85 
83 
87 
77 
80 


61 
59 
59 
72 
59 

66 
58 
57 
69 
65 

64 
72 
62 
64 
66 

69 
67 
75 
57 
67 

60 
58 
67 
60 
67 

70 
66 
67 
63 
63 

66 
70 
63 
67 
69 

64 
56 
66 

71 
67 

74 
70 
72 
71 
75 

74 
69 
68 
60 
64 

65 
66 
62 
75 
60 

63 
75 
68 
54 
75 


45 92 
46 98 
60 93 
52 99 

68 89 

45 93 
67 91 
46 97 
62 93 
50 95 

59 98 
45 90 
57 91 
61 91 
50 94 

60 94 
53 100 
53 94 
64 90 
53 96 

57 96 
57 94 
58 95 
55 96 
56 95 

57 98 
57 95 
46 94 
56 98 
53 94 

57 103 
50 91 
40 92 
54 94 
52 95 

56 93 
58 92 
53 96 
55 93 
43 97 

60 102 
57 95 
57 99 
58 99 
42 90 

64 102 
52 98 
56 102 
44 98 
62 98 

57 97 
58 98 
53 96 
56 94 
51 98 

51 96 
52 95 
50 94 
47 93 
51 101 


1872 45 


1873 .... 51 


1874 60 


1875 44 


1876 65 


1877 56 


1878 . . 49 


1879 49 


1880 61 


1881 41 


1882 58 


1883 40 


1884 49 


1885 50 


1886 .... 48 


1887 52 


1888 44 


1889 .... 55 


1890 62 


1891 ... 54 


1892 55 


1893 46 


1894 .... 60 


1895 51 


1896 50 


1897 .... 57 


1898 55 


1899 48 


1900 56 


1901 54 


1902 ... 50 


1903 51 


1904 39 


1905. 48 


1906 . . .63 


1907 . 59 


1908 49 


1909 65 


1910 . 46 


1911 54 


1912 38 


1913 55 


1914 60 


1915 . 47 


1916... . 62 


1917 . 47 


1918 35 


1919 52 


1920 ... 38 


1921 56 


1922 .... 52 


1923 49 


1924 . 48 


1925 44 


1926 . 49 


1927 42 


1928 60 


1929 .... 43 


1930... . 51 



1949] CLIMATE OF ILLINOIS: APPENDIX A 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



179 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHICAGO, Cook county, 


concluded 


1931 


. 52 


54 
66 
56 
56 

46 

56 
56 
63 
58 

42 

51 
40 
59 
62 
53 

56 

68 


53 
66 
69 
64 

72 

72 
58 
79 
79 
69 

54 
66 
78 
65 

82 

76 

82 


80 
71 
80 

78 

84 

82 
80 
83 
81 
76 

83 
91 
74 
74 
81 

85 
90 


87 98 99 
89 89 97 
86 100 94 
98 102 105 
76 84 95 

88 95 102 
91 97 92 
88 88 92 
88 92 97 
85 92 101 

91 94 98 
95 94 100 
87 97 95 
91 100 96 
85 93 99 

84 94 100 
98 102 105 


93 
94 
91 
100 
93 

99 
95 
95 
90 
92 

98 
93 
95 
99 
94 

93 
102 


94 
87 
96 
88 
90 

91 
93 
89 
100 
90 

90 
90 
88 
93 
95 

91 
100 


83 
80 
78 
81 
83 

81 
84 
85 
84 
83 

81 
83 
82 
85 
79 

87 

87 


73 
63 

77 
67 
65 

68 
73 
76 
64 
70 

70 
73 
61 

78 
74 

64 

78 


58 
58 
58 
42 
46 

60 
52 
53 
57 
53 

59 
54 
56 
42 
53 

64 

68 


99 
97 
100 
105 
95 

102 
97 
95 
100 
101 

98 
100 
97 
100 
99 

100 
105 


1932 


. 58 


1933 


. 57 


1934 


. 55 


1935 


. 46 


1936... 


. 49 


1937 


. 57 


1938 


. 52 


1939 


. 58 


1940 


. 40 


1941 


50 


1942 


. 50 


1943 


. 44 


1944 


. 62 


1945 


. 40 


1946 


. 53 


Highest . . 


. 65 






DUBUQUE, Dubuque county, Iowa 


1851... 


. 58 


53 
53 
54 
52 
39 

41 


74 
77 
62 
67 
60 

53 


77 
74 
68 
87 
92 

68 


88 98 93 
94 94 
. . 93 84 
82 92 90 
100 98 100 

92 98 


86 
93 
93 

97 
97 


90 
88 
91 
97 
94 


64 
82 
73 

82 

78 


52 
50 
59 
68 
62 


57 
52 
53 
50 
55 


98 
94 
93 
97 
100 


1852 


. 53 


1853 




1854 


. 48 


1855 


. 60 


1856 


30 


1857 




92 


94 
96 
93 
94 

98 
92 
96 
95 
90 

82 
92 
90 
95 
95 

96 


88 
88 

78 
84 

84 
87 
89 
89 
91 

78 
87 
78 
83 

88 

83 


71 

77 
84 
83 

76 
85 
68 
65 

77 

79 
76 
74 
74 
72 

95 


62 
49 
72 
62 

58 
58 
67 
57 
63 

63 
64 
60 
60 
60 

64 


50 
43 
44 
42 

58 
49 
46 
52 
44 

47 
42 
42 
44 
51 

42 


94 
96 
98 
94 

99 
94 
96 
96 
92 

96 
92 
97 
95 
103 

97 


1858 


51 


49 
52 
71 

49 
41 
48 
48 
45 

53 
52 
51 
56 

47 

47 


70 
68 
74 

56 
54 
54 
58 
61 

52 
45 
71 
63 
52 

56 


80 
69 
79 

77 
67 
75 
72 
75 

74 
71 
70 
69 
82 

83 


80 92 90 

84 89 98 
89 88 94 

84 93 99 
83 91 94 
86 94 92 
91 93 96 
87 91 92 

89 92 96 
77 90 92 
82 95 97 
82 87 91 
87 103 100 

89 95 97 


1859 


. 47 


1860 


. 45 


1861 


. 37 


1862 


. 34 


1863 


. 49 


1864 


. 44 


1865 


. 39 


1866... 


. 39 


1867 


. 36 


1868 


. 36 


1869 


. 44 


1870 


. 40 


1871 


. 52 


1874... 


. 62 


44 
34 

60 
58 
58 
47 
59 

45 
67 

47 
42 
48 

48 
51 
51 
45 

58 


64 
75 

69 
66 
71 

71 
60 

52 
62 
59 
65 
60 

65 
70 
58 
70 
59 


73 

77 

76 
76 
80 
84 
82 

80 
81 
78 
81 
74 

82 
83 

82 
78 
78 


94 98 101 
91 89 92 

87 92 95 
87 90 95 
83 92 97 
90 88 95 
92 93 97 

90 93 93 
82 91 88 
84 94 96 
81 90 91 
86 88 97 

88 92 100 
90 96 101 
78 89 94 
85 88 95 
90 96 98 


97 
90 

95 
91 
92 
91 
97 

97 
91 
92 
90 

86 

97 
99 
96 
94 
99 


90 
90 

80 
88 
92 
83 
89 

94 
87 
84 
92 
86 

92 
88 
83 
90 
90 


74 

77 

70 
78 
79 
86 
75 

80 
78 
85 
85 
77 

85 
85 
77 
79 
75 


69 
57 

63 
55 

58 
69 
60 

62 
65 
62 
65 
62 

70 
72 
72 
60 
60 


56 
57 

45 
64 
44 
55 
45 

49 
48 
58 
53 
52 

50 
50 
58 
67 
53 


101 

92 

95 
95 
97 
95 
97 

97 
91 
96 
92 
97 

100 
101 
96 
95 

99 


1875 


. 35 


1876 


55 


1877 


. 48 


1878 


. 45 


1879 


46 


1880 


. 55 


1881 


. 37 


1882 


. 52 


1883 . . . 


. 36 


1884 


. 44 


1885 


. 47 


1886... 


. 38 


1887 


. 42 


1888 


. 37 


1889 


, . 52 


1890... 


. 52 



180 BULLETIN NO. 532 [April, 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 


DUBUQUE, Dubuque county, 


Iowa, 


concluded 


1891 


. 46 


61 
51 
40 
49 

62 

62 
40 
50 
51 
45 

38 
48 
49 
58 
49 

53 
52 
52 
54 
45 

50 
45 
60 
47 
49 

47 
47 
56 
55 
41 

68 
52 
49 
47 
56 

55 
55 
51 
39 
65 

51 
61 
60 
58 
44 

46' 
44 
57 
52 
41 

47 
41 
56 
49 
47 

60 
71 


54 
56 
65 

78 
86 

66 
60 
60 
56 
59 

65 
65 
75 
56 
73 

53 
82 
68 
54 
84 

76 
50 
61 
70 
54 

66 
65 
77 
66 
75 

77 
67 
66 
62 
69 

64 
71 
80 
64 
74 

54 
68 
67 
62 
71 

76 
60 
81 
82 
70 

57 
70 
81 
63 

80 

77 
86 


78 
73 
80 

84 
88 

36 
77 
82 
81 
80 

86 
85 
75 
79 
73 

81 
69 
79 
66 

87 

70 
73 

80 
80 

87 

82 
83 
69 
75 
73 

81 
73 
80 

82 
88 

87 
80 
75 
83 
92 

84 
77 
78 
81 
78 

79 
81 
82 
85 
71 

82 
87 
75 
73 
79 

83 
92 


82 
75 
82 
89 
92 

92 
84 
83 
82 
89 

88 
88 
83 
86 
80 

87 
80 
85 
90 
76 

91 
85 
88 
91 
82 

85 
86 
89 
90 

82 

91 
87 
85 
88 
94 

89 
86 
90 

87 
88 

87 
92 
84 
104 

78 

90 
88 
83 
92 
90 

89 
90 
89 
90 
80 

84 
104 


92 89 
93 95 
92 96 
96 102 
93 98 

96 97 
99 98 
90 95 
91 92 
92 92 

98 106 
88 90 
87 91 
87 94 
91 94 

92 91 
90 93 
88 96 
90 96 

98 98 

95 104 
92 94 
96 100 
90 97 

86 87 

90 100 
87 99 
96 93 
92 95 
95 92 

93 98 
94 92 
97 96 
90 88 
90 96 

86 97 
93 93 
83 92 
87 94 
94 99 

103 100 
90 97 
98 95 
104 103 

87 98 

97 110 
97 97 
91 91 
94 98 
93 102 

97 100 
91 95 
95 94 
92 91 

89 98 

92 97 
104 110 


96 
94 
95 
100 
97 

99 
92 
92 
93 
95 

92 
89 
90 
91 
94 

92 
92 
96 
93 
93 

91 
92 
98 
96 

87 

99 
91 
98 
95 
91 

94 
93 
94 
92 
92 

92 
92 
92 
92 
103 

94 
91 
90 
98 
93 

107 
100 
93 
92 
96 

100 
92 
93 
94 
93 

92 
107 


94 
84 
94 
95 
97 

86 
93 
91 
96 
92 

91 
81 
84 
89 

87 

92 
88 
91 

87 

84 

90 
94 
97 
85 

87 

89 
86 
81 
91 
90 

90 
99 
86 
85 
97 

88 
95 
82 
91 
89 

96 
86 
95 
86 
90 

92 
95 
92 
99 
91 

92 
90 
86 
87 
92 

86 
99 


87 
82 
82 
80 
75 

74 
89 
74 
85 
86 

80 
77 
81 
80 
83 

77 
81 
79 
79 

82 

76 
81 
78 
78 
78 

85 
73 

82 
82 
85 

77 
87 
75 
83 
67 

78 
83 
85 
80 
86 

81 
80 
79 
84 
79 

81 
85 
85 
87 
81 

74 
79 
79 
75 

77 

82 
95 


57 
53 

72 
62 
71 

74 
70 
67 
69 
67 

68 
69 
70 
69 
62 

66 
55 
64 

71 
59 

70 
68 
70 
69 

78 

73 
66 
67 
58 
61 

59 
64 
65 
74 
60 

63 

71 
64 
57 

72 

73 
60 
78 
65 
60 

64 
69 
77 
69 
70 

71 
74 
66 
75 

71 

60 

78 


54 96 
45 95 
58 96 
56 102 
53 98 

58 99 
46 99 
46 95 
48 96 
51 95 

45 106 
44 90 
46 91 
53 94 
52 94 

45 92 
49 93 
51 96 
54 96 

46 98 

57 104 
55 94 

58 100 
52 97 

44 87 

61 100 
47 99 
55 98 
41 95 
55 95 

54 98 
51 99 
54 97 
41 92 
43 97 

41 97 
47 95 
50 92 
56 94 
52 103 

54 103 
55 97 
57 98 
39 104 
44 98 

58 110 
45 100 
48 93 
58 99 
54 102 

54 100 
41 95 
56 95 
39 94 
53 98 

63 97 
67 110 


1892 


. 46 


1893 
1894 


. 32 

. 60 


1895 


. 40 


1896 


. 49 


1897 


. 63 


1898 


. 44 


1899 .... 


. 46 


1900 


. 49 


1901 


. 52 


1902 


. 52 


1903 


. 45 


1904 


. 45 


1905 


. 44 


1906... 


. 59 


1907 


. 49 


1908 


. 50 


1909 


. 55 


1910 


. 44 


1911... 


. 48 


1912 


. 36 


1913 


. 53 


1914 


. 54 


1915 


43 


1916... 


. 51 


1917 


. 48 


1918 


. 37 


1919 


. 51 


1920 


. 40 


1921... 


. 54 


1922 


. 42 


1923 


: 46 


1924 


. 44 


1925 


. 46 


1926... 


. 48 


1927 


. 42 


1928 


. 54 


1929 


. 36 


1930 


. 48 


1931 . . . 


. 49 


1932 


. 46 


1933 


. 54 


1934 


. 53 


1935 


. 44 


1936... 


. 43 


1937 


. 39 


1938 


. 46 


1939 


. 58 


1940 


. 34 


1941 


. 46 


1942 


. 48 


1943 


. 45 


1944 


. 62 


1945 


. 40 


1946 


. 51 


Highest 


. 63 



1949] CLIMATE OF ILLINOIS: APPENDIX A 181 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 


PEORU, 


Peoria county 


1856 . . .36 


48 
59 
46 
70 
57 

69 
45 
51 
59 
56 

59 
59 
54 
69 
62 

66 
55 
53 
56 
46 

66 
58 
58 
53 
65 

53 
69 
50 
49 

49 

52 
57 
54 
52 

68 

68 
57 
46 
53 
68 

65 
54 
65 
57 
59 

43 
52 
54 
59 
52 

56 
59 
55 
61 
60 

63 
53 
63 
47 
55 


61 
66 
77 
72 
79 

76 
74 
63 
70 
67 

63 
52 
75 
69 
60 

72 
65 
66 
72 

78 

75 
72 
74 
74 
67 

48 
69 
68 
67 
64 

78 
73 
68 
75 
65 

64 
70 
77 
80 
86 

74 
65 
70 
65 

61 

72 
70 
79 
72 

74 

56 
87 
76 
61 

85 

76 
67 
66 
72 
59 


88 
73 
87 
75 

88 

81 
72 
82 
77 
75 

87 
72 
79 
71 
86 

84 
88 
86 
79 
80 

78 
79 
80 
86 
83 

82 
82 
85 
85 
79 

88 
90 
86 
79 

84 

81 
77 
88 
92 
86 

88 
81 
83 
92 
85 

90 
87 
81 
83 

82 

82 
75 
79 
85 

89 

72 
75 
80 
84 

85 


95 
90 

88 
88 
98 

86 
86 
88 
92 
83 

88 
75 
82 
89 
91 

90 
88 
87 
93 
93 

90 
89 
83 
91 
92 

93 
82 
87 
84 
89 

92 
93 
84 
92 
93 

83 
81 
89 
93 
98 

93 
87 
85 
90 
91 

92 
93 

88 
93 

84 

90 
83 
87 
86 
82 

95 
88 
90 
93 
90 


100 
91 
98 
97 
95 

96 
92 
98 
98 
91 

92 
95 
97 
89 
99 

94 
98 
98 
98 
93 

91 
91 
93 
92 
97 

94 
97 
95 
94 
95 

95 
101 
94 
92 
100 

95 
96 
95 

98 
98 

97 
99 
95 
97 
94 

100 
95 
95 
96 
93 

92 
89 
92 
90 

98 

100 
91 
99 
99 

89 


100 

100 
98 
104 
98 

98 
98 
98 
98 
95 

95 
95 
98 
92 
101 

96 
97 
99 
104 
96 

96 
95 
101 
100 
98 

101 
97 
98 
93 
104 

101 
106 
100 
94 
102 

92 
98 
100 
102 

98 

99 
101 
98 
97 
98 

106 
95 
100 
104 
93 

95 
92 
94 
94 
99 

100 
96 
103 
102 
91 


92 
97 
102 
95 

98 

100 
93 
93 
97 

89 

90 
93 
89 
95 
94 

96 
95 
105 
100 
92 

96 
97 
97 
96 
100 

101 
94 
95 
97 
97 

99 
104 
101 
93 
102 

99 
97 
99 
100 
98 

101 
99 
95 
99 
99 

96 
92 
96 
95 
95 

95 
94 
95 
97 

94 

95 
95 
101 
98 

88 


95 
91 
90 
86 
93 

91 
89 
88 
98 
89 

79 
92 
82 
88 
90 

93 
95 
90 
94 
93 

89 
90 
91 
86 

88 

98 
93 
90 
94 

87 

94 
98 
91 
91 
93 

93 
92 
98 
95 
95 

93 
97 
94 
104 
92 

93 
84 
90 
92 
93 

93 
91 
93 
92 
91 

95 
97 
101 

88 
89 


90 
78 
86 
80 
89 

72 
89 
73 
71 
79 

75 
84 
77 
77 
79 

88 
84 
77 
83 

77 

79 
86 
83 
90 

82 

81 
83 
83 
90 
75 

84 
86 
79 
80 
86 

90 
86 
86 
86 
75 

80 
90 
75 

88 
87 

86 
80 
86 
84 
85 

77 
84 
85 
82 
85 

86 
87 
82 
84 
81 


61 
63 
54 
70 
62 

73 
65 
68 
73 
64 

62 
72 
65 
62 
70 

66 
64 
61 

77 
59 

69 
59 
61 
73 
64 

64 
75 
67 
68 
68 

72 
75 
80 
59 
74 

63 
61 
75 
68 
74 

74 
71 
70 
68 
69 

71 
75 
71 
71 

72 

72 
60 
70 

74 
68 

77 
72 
74 
73 
79 


49 100 
54 100 
51 102 
59 104 

47 98 

66 100 
61 98 
59 98 
67 98 
50 95 

53 95 
55 95 
53 98 
48 95 
53 101 

51 96 
51 98 
62 105 
52 104 
71 96 

44 96 
66 97 
48 101 
62 100 
50 100 

57 101 
47 97 
60 98 
57 97 
52 104 

56 101 
56 106 
57 101 
65 94 
60 102 

62 99 
65 98 
63 100 
57 102 
59 98 

61 101 
59 101 
52 98 
57 104 
56 99 

59 106 
54 95 

47 100 
54 104 
52 95 

58 95 
62 94 
53 95 
58 97 
48 99 

61 100 
58 97 
58 103 
57 102 
45 91 


1857 43 


1858 59 


1859 49 


I860 53 


1861 ... .44 


1862 40 


1863 58 


1864 65 


1865 48 


1866... . 45 


1867 44 


1868 51 


1869 54 


1870 52 


1871... . 62 


1872, 49 


1873 51 


1874 64 


1875 46 


1876... . 62 


1877 57 


1878 50 


1879 46 


1880 62 


1881 ... .37 


1882 60 


1883 37 


1884 48 


1885 48 


1886 56 


1887 56 


1888 48 


1889 60 


1890 66 


1891 55 


1892 49 


1893 50 


1894 67 


1895 50 


1896... . 53 


1897 63 


1898 56 


1899 48 


1900 58 


1901 ... .54 


1902 55 


1903 53 


1904 47 


1905 55 


1906... . 65 


1907 65 


1908 53 


1909 71 


1910 45 


1911... . 56 


1912 40 


1913 54 


1914 62 


1915... . 51 



182 BULLETIN NO. 532 [April, 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, 


Peoria county, 


concluded 


1916... 


. 60 


60 


75 


82 


88 92 103 


98 


94 


87 


76 


67 


103 


1917 


. 58 


53 


77 


84 


88 91 98 


92 


86 


80 


70 


54 


98 


1918 


. 36 


67 


78 


74 


90 100 96 


104 


82 


82 


72 


67 


104 


1919 


. 55 


56 


70 


76 


90 92 98 


96 


94 


88 


63 


45 


98 


1920 


. 40 


54 


75 


75 


85 96 98 


94 


91 


86 


67 


58 


98 


1921... 


. 53 


72 


79 


82 


93 95 101 


93 


91 


83 


65 


55 


101 


1922 


. 54 


71 


73 


77 


87 96 97 


98 


100 


92 


68 


61 


100 


1923 


. 50 


45 


70 


80 


85 97 98 


97 


86 


76 


67 


57 


98 


1924 


. 51 


58 


66 


86 


86 95 94 


95 


88 


84 


75 


52 


95 


1925 


. 46 


63 


74 


87 


93 95 100 


94 


99 


75 


64 


49 


. 100 


1926... 


. 53 


66 


70 


84 


93 94 96 


93 


90 


86 


64 


52 


96 


1927 


. 48 


60 


72 


SO 


85 94 94 


91 


95 


86 


77 


55 


95 


1928 


. 64 


53 


82 


80 


89 85 95 


94 


89 


87 


66 


53 


95 


1929 


. 46 


50 


81 


86 


90 93 93 


95 


92 


80 


57 


55 


95 


1930 


. 52 


71 


72 


92 


88 99 107 


103 


94 


86 


78 


56 


107 


1931... 


. 61 


60 


57 


84 


87 103 102 


98 


96 


88 


78 


57 


103 


1932 


. 60 


74 


72 


80 


91 95 98 


95 


90 


82 


64 


60 


.98 


1933 


. 59 


63 


77 


79 


86 101 97 


93 


100 


80 


80 


65 


101 


1934 


. 60 


62 


68 


79 


104 105 105 


104 


88 


83 


71 


45 


105 


1935 


. 50 


54 


77 


84 


80 89 97 


96 


92 


85 


68 


51 


97 


1936... 


. 53 


64 


78 


87 


89 105 113 


106 


96 


82 


68 


62 


113 


1937 


. 47 


54 


66 


81 


92 99 95 


99 


94 


89 


81 


53 


99 


1938 


. 53 


69 


80 


84 


86 94 96 


97 


94 


88 


79 


54 


97 


1939 


. 60 


56 


82 


84 


93 93 97 


92 


102 


89 


67 


62 


102 


1940.. 


. 37 


49 


75 


84 


89 94 104 


99 


94 


88 


74 


62 


104 


1941... 


. 51 


57 


61 


87 


92 98 102 


101 


93 


83 


75 


60 


102 


1942 


. 57 


41 


76 


89 


93 96 97 


97 


92 


83 


75 


55 


97 


1943 


. 48 


65 


82 


78 


90 94 95 


96 


89 


81 


65 


58 


96 


1944 


. 63 


58 


67 


73 


90 96 95 


97 


92 


83 


76 


40 


97 


1945 


. 40 


56 


81 


76 


82 90 96 


98 


92 


78 


77 


56 


98 


1946 


. 55 


60 


79 


83 


83 91 97 


90 


90 


86 


62 


66 


97 


Highest 


71 


74 


87 


92 


104 105 113 


106 


104 


92 


81 


71 


113 


SPRINGFIELD, Sangamon county 


1879... 










102 


94 


84 


88 


76 


62 




1880 


. 64 


67 


69 


82 


86 93 96 


97 


86 


79 


64 


57 


97 


1881... 


. 44 


60 


60 


80 


88 94 99 


100 


95 


77 


64 


62 


100 


1882 


. 62 


72 


73 


83 


80 92 90 


88 


90 


80 


73 


54 


92 


1883 


. 45 


64 


73 


85 


87 90 95 


98 


88 


83 


68 


64 


98 


1884 


. 62 


55 


66 


80 


78 91 90 


91 


91 


86 


67 


60 


91 


1885 


. 54 


55 


66 


76 


82 88 96 


92 


82 


85 


70 


58 


96 


1886... 


. 58 


58 


77 


81 


86 88 96 


99 


90 


83 


73 


54 


99 


1887 


. 61 


65 


71 


84 


86 96 100 


97 


96 


84 


77 


56 


100 


1888 


. 53 


54 


66 


80 


85 89 97 


95 


89 


77 


77 


55 


97 


1889 


. 58 


56 


73 


78 


88 90 91 


90 


88 


80 


59 


67 


91 


1890 


. 68 


71 


64 


85 


89 97 100 


97 


91 


88 


74 


60 


100 


1891... 


. 54 


67 


65 


81 


84 95 89 


94 


94 


88 


68 


62 


95 


1892 


. 57 


62 


73 


79 


83 92 94 


95 


88 


85 


63 


59 


95 


1893 


. 55 


51 


78 


85 


87 92 93 


93 


98 


87 


71 


61 


98 


1894 


. 66 


55 


79 


86 


88 97 98 


96 


92 


83 


71 


60 


98 


1895 


. 60 


65 


84 


88 


92 95 94 


93 


94 


75 


72 


59 


95 


1896... 


. 55 


70 


71 


84 


90 91 95 


98 


91 


78 


74 


64 


98 


1897 


. 61 


64 


74 


77 


82 95 98 


98 


96 


91 


70 


60 


98 


1898 


. 58 


66 


69 


79 


86 91 96 


94 


92 


85 


69 


57 


96 


1899 


. 52 


56 


64 


88 


87 92 95 


97 


99 


88 


70 


56 


99 


1900 


61 


64 


64 


83 


86 92 94 


97 


92 


86 


72 


59 


97 



Data since May, 1943, are from the Peoria Municipal Airport. 



1949] CLIMATE OF ILLINOIS: APPENDIX A 183 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SPRINGFIELD, Sangamon county, 


concluded 


1901... 


. 63 


50 
50 
56 
63 

59 

64 
65 
52 
62 
63 

67 
52 
64 
47 
66 

65 
57 
68 
57 

58 

69 
71 
48 
61 
65 

67 
62 
55 
53 

78 

64 
75 
66 
64 
63 

66 
56 
73 
60 
50 

59 
50 
66 
65 
66 

62 

78 


70 
71 
76 
73 

75 

56 
91 
79 
65 

86 

74 
72 
70 
69 
58 

76 
83 
83 
71 
76 

81 
74 
74 
68 
77 

73 

72 
81 
84 
70 

59 
74 
82 
70 
80 

78 
70 
80 
83 
76 

66 
77 
81 
73 
83 

79 
91 


88 
87 
84 
80 
85 

83 

77 
79 
85 
89 

73 
78 
83 
85 

85 

84 
84 
78 
79 
77 

83 
81 

82 
85 
89 

84 
81 
79 
86 
90 

83 
82 

84 
77 
84 

89 
89 

87 
82 
83 

89 
88 
78 
76 
80 

87 
90 


89 98 107 
91 94 94 
85 89 97 
86 86 91 
87 97 93 

90 93 96 
86 90 97 
88 96 94 
89 92 94 
82 95 96 

95 101 101 
88 90 97 
93 100 103 
93 100 104 
92 90 92 

92 96 102 
89 94 98 
90 100 101 
88 92 100 
84 95 100 

93 95 100 
86 98 97 
84 99 98 
87 94 95 
95 97 102 

93 94 97 
86 96 96 
92 86 95 
88 93 94 
87 97 104 

91 102 102 
91 95 100 
88 101 101 
101 104 107 
83 89 100 

90 103 110 
93 100 96 
87 95 100 
94 94 101 
90 95 102 

94 98 102 
94 96 98 
93 95 97 
92 100 98 
86 92 99 

83 94 99 
101 104 110 


99 
91 
94 
90 
93 

95 
96 
97 
96 
93 

94 
94 
101 
97 
89 

98 
93 
106 
98 
94 

95 
100 
97 
98 
94 

99 
91 
93 
95 
102 

100 
95 
96 
108 
100 

106 
98 
100 
95 
98 

101 
98 
100 
100 
97 

92 
108 


94 
84 
89 
90 
92 

92 
93 
92 
90 

89 

92 
96 
91 
90 
90 

93 

87 
81 
96 

88 

91 
99 
83 
89 
100 

90 
95 
93 
92 
92 

97 
90 
98 
91 
93 

98 
94 
99 
100 
95 

93 
95 
92 
94 
93 

90 
100 


88 
78 
86 
84 

84 

80 
84 
82 
86 

82 

86 
86 
75 
81 
81 

87 
81 
86 
88 

82 

81 
89 
77 
82 
76 

86 
84 
85 
79 

85 

88 
82 
81 
82 

85 

83 
88 
88 
90 
86 

85 
84 
82 
87 
79 

88 
91 


71 
76 
69 
72 

76 

71 
61 
70 
75 
71 

76 
73 
75 
74 
79 

74 
72 
70 
64 
68 

67 
71 
66 
76 
65 

64 

77 
67 
61 

77 

78 
66 
80 
73 
73 

69 
82 
79 
67 
76 

74 
76 
71 

77 
79 

65 

82 


61 
54 
48 
59 
53 

59 
66 
64 
59 
50 

61 
60 
58 
59 

50 

68 
61 
69 
49 
59 

58 
62 
60 
56 
57 

58 
60 
57 
64 
56 

61 
67 
66 
51 
55 

62 
58 
56 
63 
63 

64 
67 
57 
47 
60 

67 
69 


107 
94 
97 
91 
97 

96 
97 
97 
96 
96 

101 
97 
103 
104 
92 

102 
98 
106 
100 
100 

100 
100 
99 
98 
102 

99 
96 
95 
95 
104 

102 
100 
101 
108 
100 

110 
100 
100 
101 
102 

102 
98 
100 
100 
99 

99 
110 


1902 .... 


. 57 


1903 


. 59 


1904 


. 52 


1905 


. 61 


1906... 


. 71 


1907 


. 70 


1908 


. 56 


1909 


. 73 


1910 . . 


. 49 


1911... 


. 66 


1912 


. 46 


1913 


. 56 


1914 


. 65 


1915 


. 53 


1916... 


. 62 


1917 


. 60 


1918 


. 39 


1919 


. 55 


1920 . . 


45 


1921... 


. 60 


1922 


. 56 


1923 


. 54 


1924 


. 52 


1925 


. 50 


1926... 


. 54 


1927 


. 50 


1928 


. 67 


1929 


. 53 


1930 


. 56 


1931... 


. 64 


1932 


. 60 


1933 . . 


. 62 


1934 


. 62 


1935 


. 56 


1936 . . . 


. 59 


1937 


. 58 


1938 


. 55 


1939 


. 62 


1940 


. 37 


1941... 


. 55 


1942 . . 


57 


1943 


. 52 


1944 


. 65 


1945 . 


. 42 


1946 


. 58 


Highest . . 


. 73 






URBANA, Champaign 


county 


1889... 


. 57 


53 
68 

61 
55 
51 
58 
53 

68 
59 
65 
58 
63 


72 
61 

65 
69 
76 

77 
84 

67 
66 
69 
69 
61 


75 
81 

81 
70 
75 

85 
88 

86 
79 
79 
90 
83 


91 88 90 
83 96 98 

91 93 93 
82 94 96 
84 93 98 
89 97 98 
95 98 94 

91 92 95 
83 93 98 
82 90 96 
86 93 94 
89 90 93 


89 
96 

99 
94 
96 
99 
97 

97 
97 
94 
96 
95 


88 
89 

96 
87 
97 

94 

88 

91 
98 
94 
99 
93 


82 
76 

88 
88 
84 
84 
82 

79 
92 
86 
87 

88 


62 
68 

67 
64 
75 
67 
62 

74 
69 
68 
69 
72 


66 
58 

60 
60 
63 
59 
66 

62 
59 
55 
60 

58 


91 
98 

99 
96 
98 
99 

98 

97 
98 
96 
99 
95 


1890 


. 66 


1891... 


. 57 


1892 


. 57 


1893 


. 48 


1894 


. 64 


1895 


. 57 


1896... 


. 52 


1897 


. 59 


1898 


. 62 


1899 , 


. 53 


1900. . . 


. 61 



184 BULLETIN NO. 532 [April, 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July Aug. 


Sept. Oct. 


Nov. 


Dec. 


Annual 


URBANA, 


Champaign county 


, concluded 


1901... 


. 61 


47 


70 


87 


89 95 104 


101 


94 


88 


69 


60 


104 


1902 


. 56 


48 


70 


85 


90 92 91 


90 


84 


78 


75 


51 


92 


1903 


. 53 


55 


76 


80 


86 90 96 


94 


90 


88 


68 


45 


96 


1904 


. 50 


60 


72 


80 


87 88 92 


91 


89 


81 


69 


55 


92 


1905 


. 58 


49 


77 


83 


85 97 92 


94 


93 


86 


74 


52 


97 


1906... 


. 67 


62 


53 


84 


88 93 92 


94 


91 


78 


70 


61 


94 


1907 


,. 64 


58 


85 


77 


84 90 93 


92 


90 


89 


60 


62 


93 


1908 


. 52 


53 


76 


78 


85 92 94 


93 


93 


86 


70 


62 


94 


1909 


. 70 


60 


63 


80 


85 91 93 


94 


90 


XO 


74 


60 


94 


1910 


. 47 


59 


85 


84 


79 95 93 


90 


87 


83 


70 


46 


95 


1911 


. 58 


69 


73 


72 


95 98 102 


97 


90 


84 


75 


61 


102 


1912 


. 42 


49 


70 


75 


87 88 94 


92 


95 


85 


72 


58 


95 


1913 


. 58 


64 


66 


80 


89 98 103 


100 


98 


82 


72 


58 


103 


1914 , 


. 64 


44 


68 


83 


92 97 99 


95 


88 


82 


70 


58 


99 


1915 


, . 49 


60 


55 


84 


86 86 90 


85 


88 


80 


79 


46 


90 


1916 


. 61 


61 


77 


80 


88 92 101 


97 


92 


86 


75 


66 


101 


1917 


. 59 


58 


76 


83 


86 90 94 


92 


86 


80 


70 


52 


94 


1918 


, . 36 


66 


76 


78 


88 99 95 


101 


79 


83 


70 


65 


101 


1919 


. 55 


56 


67 


76 


92 91 96 


94 


92 


88 


63 


51 


96 


1920 , 


. 41 


55 


72 


72 


84 94 98 


93 


88 


83 


66 


58 


98 


1921 


. 54 


68 


79 


78 


91 94 98 


88 


87 


80 


64 


57 


98 


1922 


. 56 


69 


70 


75 


84 95 93 


93 


98 


90 


68 


60 


98 


1923 


. 50 


46 


65 


77 


82 98 95 


92 


83 


77 


65 


60 


98 


1924 , 


. . 48 


59 


64 


81 


83 93 94 


96 


88 


83 


75 


58 


96 


1925 


. 46 


65 


75 


88 


94 97 102 


94 


99 


78 


62 


55 


102 


1926 


. 47 


56 


73 


82 


91 90 96 


96 


87 


84 


62 


57 


96 


1927 


. 45 


60 


70 


77 


84 94 93 


88 


94 


84 


76 


61 


94 


1928 


. 63 


56 


79 


76 


89 84 92 


92 


93 


85 


67 


53 


93 


1929 , 


. 54 


52 


82 


81 


86 93 93 


92 


90 


78 


64 


62 


93 


1930 


. 54 


70 


71 


91 


84 99 105 


100 


90 


83 


77 


54 


105 


1931... 


. 60 


60 


57 


80 


88 99 97 


96 


94 


86 


74 


61 


99 


1932 


. 65 


68 


69 


81 


87 92 98 


95 


89 


SO 


62 


62 


98 


1933 


5J? 


60 


76 


78 


84 100 99 


92 


97 


80 


78 


64 


100 


1934 


. 58 


61 


69 


76 


97 103 104 


99 


87 


81 


69 


50 


104 


1935 


. 53 


60 


74 


84 


79 88 95 


96 


91 


83 


72 


52 


96 


1936 


. 55 


60 


72 


84 


85 101 108 


101 


94 


80 


66 


60 


108 


1937 


. . 57 


58 


66 


82 


92 95 91 


95 


92 


85 


76 


55 


95 


1938 


,. 54 


68 


76 


82 


85 92 96 


95 


90 


88 


76 


55 


96 


1939 


. 59 


60 


81 


79 


89 90 98 


91 


99 


89 


64 


61 


99 


1940 


. 38 


46 


73 


80 


85 92 99 


97 


94 


86 


74 


58 


99 


1941... 


. 52 


57 


65 


84 


90 95 96 


99 


90 


84 


72 


62 


99 


1942 


. . 56 


45 


74 


85 


91 93 94 


91 


92 


82 


74 


59 


94 


1943 


. . 56 


65 


77 


77 


86 92 96 


96 


92 


84 


65 


60 


96 


1944 


. 62 


64 


67 


72 


89 98 96 


95 


90 


85 


74 


48 


98 


1945 


. 40 


66 


79 


77 


84 90 96 


94 


89 


75 


72 


56 


96 


1946 


, . 57 


56 


77 


83 


80 93 99 


91 


89 


87 


65 


65 


99 


Highest. . . 


70 


70 


85 


91 


97 103 108 


101 


99 


92 


79 


66 


108 


CAIRO, Alexander county 


1872 






74 


89 


86 96 95 


99 


93 


88 


68 


58 




1873 


. 63 


65 


72 


86 


90 94 96 


95 


93 


82 


72 


68 


96 


1874 


, . 66 


64 


74 


78 


92 95 99 


101 


92 


81 


78 


66 


101 


1875 


, . 54 


65 


77 


79 


89 92 96 


87 


92 


79 


74 


72 


96 


1876... 


. 70 


73 


76 


79 


90 93 97 


95 


92 


83 


77 


60 


97 


1877 


. . 67 


71 


78 


80 


89 93 94 


92 


85 


82 


65 


69 


94 


1878 


. . 60 


63 


78 


83 


86 89 96 


94 


88 


81 


71 


60 


96 


1879 


, . 64 


67 


84 


83 


90 91 96 


95 


83 


87 


79 


66 


96 


1880 


. 70 


68 


71 


83 


88 93 94 


93 


86 


77 


65 


69 


94 



1949] CLIMATE OF ILLINOIS: APPENDIX A 185 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 








CAIRO, 


Alexander county, 


continued 


1881 


. 55 


60 
69 
74 
69 

67 

60 
72 
66 
70 
75 

69 
67 
64 
64 

74 

71 
69 
68 
68 
70 

68 
57 
66 
74 
63 

68 
70 
65 
68 
61 

76 
59 
68 
64 
63 

67 
75 
78 
60 
65 

73 
72 
65 
69 

70 

62 
70 
67 
60 
74 

70 
75 
70 

72 
72 

71 
67 
74 
71 
57 


74 83 
73 82 
70 84 
71 80 
75 81 

79 80 
75 87 
76 82 
75 81 
74 80 

64 82 
79 80 
77 83 
78 87 
84 88 

70 85 
76 80 
78 81 
73 88 
79 82 

75 87 
70 86 
75 79 
78 77 
79 86 

62 85 
85 81 
82 81 
67 81 

87 84 

86 81 
76 78 
78 83 
76 83 
64 87 

78 78 
78 83 
81 80 
72 84 
77 80 

82 83 
72 81 
70 83 
71 87 
81 88 

77 83 
72 81 
79 77 
88 80 
71 87 

66 85 
74 82 
78 84 
74 85 
81 85 

76 84 
71 88 
80 83 
82 79 
80 84 


87 
82 
84 
82 
89 

88 
87 
84 
88 
88 

87 
83 
85 
87 
91 

90 
85 
88 
88 
88 

89 
92 
86 
89 
90 

89 
86 
90 
84 
85 

96 
88 
96 
92 
92 

90 
86 
91 
86 
90 

91 
87 
84 
86 
95 

92 
85 
88 
90 
86 

88 
87 
88 
94 
86 

89 
94 
87 
88 
88 


95 
94 
91 
92 
92 

88 
96 
89 
90 
96 

93 
93 
89 
94 
95 

89 
94 
91 
93 
90 

98 
95 
88 
90 
94 

92 
88 
94 
92 
94 

98 
86 
102 
100 
91 

93 
94 
100 
93 
94 

94 
96 
93 
93 
95 

94 
94 
87 
94 
99 

100 
97 
98 
99 
89 

101 
96 
92 
90 
92 


99 
90 
92 
92 
96 

93 
98 
95 
91 
95 

90 
94 
94 
95 
93 

98 
98 
94 
92 
91 

106 
97 
95 
92 
92 

91 
97 
93 
94 
94 

99 
93 
99 
101 

97 

96 
93 
95 
95 

94 

97 
95 
96 
92 

98 

101 
94 
94 
96 
106 

100 
98 
100 
105 
100 

105 
95 
98 
99 
96 


103 

88 
92 
90 
95 

97 
97 
97 
88 
91 

92 
93 
93 
100 
93 

97 
98 
92 
96 
97 

97 
98 
93 
93 
93 

91 
96 
96 
99 
92 

98 
93 
100 
97 
91 

96 
94 
102 
98 
90 

96 
94 
96 
95 
100 

94 
89 
93 
96 
106 

92 
96 
92 
99 
98 

101 
97 
98 
93 
93 


97 
88 
89 
91 
85 

88 
95 

88 
88 

87 

93 
88 
92 
90 
94 

97 
96 
93 
97 
95 

92 
87 
91 
90 

88 

89 
93 
90 
90 
91 

93 
95 
98 
91 
92 

92 
90 
84 
95 
91 

94 
96 
90 
88 
104 

90 
96 
90 
89 
94 

95 
90 
93 
89 
91 ' 

94 
94 
96 
99 
94 


88 
82 
85 
88 
78 

83 
82 
82 
83 
84 

88 
85 
84 
85 
79 

82 
90 
86 
87 

87 

84 
80 
86 
83 
84 

81 
87 
84 
88 
91 

89 
86 
85 
84 
83 

89 
84 
87 
88 
84 

82 
89 
81 
86 

84 

88 
86 
88 
81 
84 

86 
80 
83 

84 

84 

81 
87 
93 
87 
86 


71 
80 
74 
70 
76 

74 
75 
78 
73 
72 

72 
64 
74 
73 
71 

77 
75 
75 
76 
75 

76 
80 
75 
71 
75 

75 
70 
76 
82 
74 

78 

I 5 

77 

80 
81 

80 
74 
71 
67 
73 

74 
75 
72 
78 
70 

71 
79 
70 
72 
79 

78 
71 
78 ' 
76 

78 

79 
81 
78 
73 
77 


67 103 
56 94 
71 92 
64 92 
63 96 

57 97 
58 98 
62 97 
74 91 
63 96 

66 93 
71 94 
67 94 
66 100 
65 95 

70 98 
68 98 
64 94 
61 97 
62 97 

66 106 
64 98 
57 95 
64 93 
56 94 

70 92 
64 97 
70 96 
72 99 
61 94 

62 99 
64 95 
65 102 
60 101 
62 97 

74 96 
69 94 
71 102 
63 98 
64 94 

65 97 
68 96 
69 96 
70 95 
64 104 

65 101 
72 96 
67 94 
68 96 
62 106 

73 100 
69 98 
72 100 
54 105 
59 100 

66 105 
62 97 
64 98 
71 99 
65 96 


1882 


. 64 


1883 


. 56 


1884 


. 66 


1885 


. 61 


1886 


. 57 


1887 


. 66 


1888 


. 73 


1889 


. 61 


1890 


. 73 


1891... 


. 60 


1892 


. 62 


1893 


. 62 


1894 


. 68 


1895 


. 68 


1896... 


. 61 


1897 


. 66 


1898 


. 70 


1899 


. 64 


1900 


. 65 


1901... 


. 66 


1902 


. 67 


1903 


. 70 


1904 


. 61 


1905 


. 64 


1906... 


. 74 


1907 


. 71 


1908 


. 59 


1909 


. 72 ' 


1910 . . . . 


. 64 


1911... 


. 70 


1912 


. 57 


1913 


. 64 


1914 


. 69 


1915 


. 57 


1916... 


. 67 


1917 


. 70 


1918 


. 53 


1919 


. 63 


1920 


. 66 


1921 


. 67 


1922 


. 64 


1923 . . 


. 65 


1924 


. 57 


1925 


. 60 


1926 .. 


. 62 


1927 


63 


1928 


. 70 


1929 


. 70 


1930 


. 64 


1931 


73 


1932 


. 68 


1933 


. 65 


1934 


. 67 


1935 


. 67 


1936... 


. 66 


1937 


. 67 


1938 


. 62 


1939 


. 68 


1940... 


. 51 



186 BULLETIN NO. 532 [April, 

Table 7. Monthly and Annual Highest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, Alexander county, concluded 


1941... 


. 63 


60 
60 
69 
73 
72 

66 

78 


71 
76 
76 

79 
81 

82 
88 


87 
84 
84 
78 
81 

86 
89 


93 95 
92 95 
91 95 
92 100 
90 93 

83 98 
96 102 


99 99 
98 100 
98 101 
98 98 
100 98 

97 98 
106 106 


93 
92 
93 
95 
93 

91 
104 


88 
83 
83 
88 
79 

86 
93 


76 
78 
75 
77 
75 

78 
82 


67 
74 
60 
59 
63 

68 
74 


99 
100 
101 
100 
100 

98 
106 


1942 


. 65 


1943 


. 74 


1944 


. C6 


1945 


. 56 


1946 


. 63 


Highest . . 


. 74 














ST 


. LOUIS, 


Missouri 












1871... 


. 64 


70 
61 
64 
62 
64 

73 
69 
62 
65 

71 

65 
73 
67 
64 
68 

64 
74 
63 
69 

78 

69 
68 
58 
62 
70 

75 
71 
71 
66 
65 

60 
56 
62 
69 
61 

65 
72 
62 
65 
65 

84 
59 
69 
62 
69 

68 
68 
70 
59 
64 


79 
62 
71 

77 
79 

76 
76 
76 
82 
76 

69 
79 
78 
69 
74 

81 
79 
76 
76 
69 

68 
78 
82 
84 

85 

74 
76 
75 
69 

77 

71 
74 
78 
79 

78 

63 
90 
79 
73 

87 

80 
75 
74 
80 
61 

80 
80 
84 
73 
80 


87 
83 
85 
79 

78 

82 
81 
82 
83 
86 

87 
87 
88 
83 
79 

84 
87 
88 
84 
89 

82 
85 
88 
88 
89 

88 
80 
82 
91 

82 

89 
89 
82 
79 

88 

87 
79 
82 
85 
89 

74 
80 
84 
82 
86 

85 
84 
81 
82 
80 


90 93 
84 90 
88 94 
93 96 
90 92 

89 93 
87 93 
86 90 
91 95 
89 93 

90 99 
89 97 
90 91 
86 95 
91 92 

90 91 
89 97 
88 90 
90 93 
90 98 

89 93 
87 94 
89 93 
92 99 
94 96 

91 91 
84 96 
90 92 
90 94 
89 93 

90 102 
93 98 
92 90 
90 86 
91 96 

88 92 
86 90 
89 92 
87 92 
85 91 

94 98 
89 86 
93 99 
92 101 
91 90 

91 95 
90 94 
90 100 

88 92 
88 94 


100 91 
93 98 
95 99 
100 101 

97 87 

94 92 
97 94 
98 96 
100 99 
95 101 

104 106 
95 92 
96 97 
94 92 
97 95 

96 102 
100 99 
98 97 
93 91 
98 97 

91 96 
96 97 
94 93 
98 100 
96 94 

98 100 
97 101 
96 95 
93 98 
94 99 

107 105 
96 97 
98 97 
93 92 
94 92 

93 93 
96 98 
92 98 
96 98 
94 93 

101 96 
96 95 
102 101 
102 98 
94 92 

99 96 
96 94 
100 105 
99 102 
99 92 


85 
92 
89 
90 
92 

90 
88 
90 
88 
91 

102 
96 
92 
92 

84 

92 
97 
90 
90 
92 

94 
90 
99 
94 
95 

95 
98 
95 

102 
95 

95 
86 
92 
89 
92 

91 
91 
90 
92 
89 

95 
95 
99 
89 
91 

94 
91 
82 
96 
91 


81 
85 
80 
83 
81 

81 
85 
85 
90 
83 

85 
86 
86 
88 
79 

83 
86 
85 
84 
89 

88 
87 
88 
84 

77 

80 
91 
86 
90 

88 

89 
82 
87 
84 
82 

81 
82 
84 
87 
86 

88 
86 
82 
82 
82 

86 
85 
88 
89 
85 


66 
61 
71 
76 
71 

77 
65 
72 
82 
68 

72 
76 
72 
76 
76 

75 
79 
79 
62 

76 

68 
67 
73 
73 
76 

78 
74 
74 
76 
80 

76 
79 
71 
72 

77 

72 
66 
73 
78 
73 

78 
76 
75 
80 
81 

79 
74 
75 
68 
72 


61 
53 
67 
65 

74 

60 
69 
56 
63 
64 

64 
60 
72 
66 
65 

61 
58 
59 
73 
63 

64 
63 
66 
63 

61 

68 
64 
62 
60 
63 

62 
56 
56 
64 
59 

63 
69 
72 
62 
54 

65 
66 
63 
60 
56 

71 
66 
74 
56 
64 


100 
98 
99 
101 
97 

94 
97 
98 
100 
101 

106 
97 
97 
95 
97 

102 
100 
98 
93 

98 

96 
97 
99 
100 
96 

100 

101 
96 
102 
99 

107 
98 
98 
93 
96 

93 
98 
98 
98 
94 

101 
96 
102 
102 
94 

99 
96 
105 
102 
99 


1872 


. 50 


1873 


. 53 


1874 


. 65 


1875 


. 54 


1876 


. 67 


1877 


. 66 


1878 


. 57 


1879 


. 61 


1880 


. 72 


1881 


. 48 


1882 


. 69 


1883 


. 48 


1884 


. 67 


1885 


. 69 


1886 


. 60 


1887 


. 66 


1888 


. 68 


1889 


. 64 


1890 


. 74 


1891 


. 59 


1892 


. 60 


1893 


. 60 


1894 


. 72 


1895 


. 64 


1896... 


. 62 


1897 


. 64 


1898 


. 63 


1899 


. 61 


1900 


. 66 


1901 


. 69 


1902 


. 63 


1903 


. 64 


1904 


. 58 


1905 


. 65 


1906 . . 


. 72 


1907 


. 67 


1908 


. 61 


1909 


. 73 


1910 


. 61 


1911... 


. 74 


1912 


. 58 


1913 


. 64 


1914 


. 68 


1915 


. 59 


1916 . . . 


. 65 


1917 , 


. 65 


1918 


. 45 


1919 


. 62 


1920... 


. 55 



1949] CLIMATE OF ILLINOIS: APPENDIX A 187 

Table 7. Monthly and Annual Highest Temperatures 
(Concluded) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 








ST 


. LOUIS, 


Missouri, 


concluded 


1921 


. 67 


73 
74 
54 
66 
69 

69 
70 
62 

58 
80 

67 
82 
71 
72 
79 

74 
65 
76 
64 
62 

61 
59 
73 
70 
74 

69 
84 


81 
76 

77 
72 
81 

80 
75 
81 
92 
70 

68 
74 
85 
73 
81 

74 
69 
82 
83 

87 

66 
80 
81 
79 
85 

81 
92 


82 
82 
83 
86 
91 

83 
82 
81 
87 
93 

84 
84 
86 
82 

84 

89 
89 
88 
84 
88 

87 
88 
83 
78 
78 

91 
93 


92 
88 
84 
86 
94 

94 
85 
91 
90 

88 

91 
89 
93 
96 

82 

88 
93 
87. 
91 
91 

92 
92 
92 
91 

88 

80 
96 


94 98 
96 96 
95 95 
93 93 

96 97 

93 98 
94 97 
88 95 
93 98 
101 108 

102 104 
94 101 
102 103 
102 110 
90 100 

104 109 
98 96 
94 101 
94 100 

94 102 

97 101 
94 97 
94 99 
99 96 
91 98 

96 99 
104 110 


97 
100 
98 
95 
98 

100 
91 
94 
99 
105 

100 
94 
99 

108 
98 

106 

97 
100 
93 
99 

100 
98 
101 
98 
97 

94 
108 


92 
99 
88 
89 
103 

92 
98 
93 
92 
96 

96 
90 
99 
91 
93 

98 
92 
98 
100 
95 

93 
94 
90 

94 
94 

91 
103 


83 
90 
79 
85 
80 

87 
86 
88 
81 

84 

87 
84 
82 
82 
84 

83 
89 
90 
93 
90 

88 
84 
84 
88 
81 

88 
93 


73 
73 
70 

77 
67 

67 
80 
79 
69 

74 

82 
66 
79 
76 
76 

72 
83 
81 
71 

77 

77 
80 
77 
80 
80 

70 
83 


62 98 
67 100 
70 98 
69 95 
65 103 

67 100 
63 98 
75 95 
69 99 
65 108 

66 104 
69 101 
72 103 
51 110 
57 100 

66 109 
59 98 
62 101 
72 100 
69 102 

67 101 
71 98 
63 101 
55 99 
67 98 

69 99 
75 110 


1922 


. 61 


1923 


. 62 


1924 


. 61 


1925 


. 57 


1926 


. 61 


1927 


. 59 


1928 


71 


1929 


. 61 


1930 


. 60 


1931 


. 70 


1932 


. 68 


1933 


. 65 


1934 


. 65 


1935 


. 65 


1936 . . . . 


. 67 


1937 


. 62 


1938 


. 62 


1939 


. 70 


1940 


. 43 


1941. . . 


. 64 


1942 


. 67 


1943 


73 


1944 


. 70 


1945 


. 51 


1946 


. 60 


Highest 


. 74 



188 BULLETIN NO. 532 [April, 

Table 8. Monthly and Annual Lowest Temperatures 
( Fahrenheit) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. Annual 


CHICAGO 


, Cook county 


1871... 


10 


6 
-2 
-18 
9 
-13 

-3 
21 
17 
-6 
12 

8 
10 
-9 
-3 
-14 

-6 
-7 
-18 
-11 
3 

-8 
2 

Q 

-4 
-15 

-9 
-6 
-8 
-21 
-9 

-I 

-7 
-11 
-6 
-18 

6 
-2 
-2 
12 
-6 

8 
-7 
-2 
-6 
15 

-3 
-10 
-10 
11 

-7 

17 
2 
-8 
10 
1 

13 
16 
5 
-2 

1 


32 
8 
-12 

17 
9 

10 
5 
25 
16 
19 

11 
22 
10 
-1 
4 

15 
9 
-1 
20 


7 
5 
9 
9 
9 

6 
17 
21 
3 
-1 

1 
13 
13 
13 
15 

10 
23 
21 
14 
26 

13 
6 
-4 
10 
21 

12 
11 
18 
8 
3 

19 
23 

17 

1 

9 
24 
10 
9 
15 


36 
27 
25 
22 

V 

32 
27 
36 
17 

27 

17 
25 
28 
31 
27 

23 
19 
30 
29 

28 

23 
23 

27 
31 
29 

18 
24 
19 
18 
28 

30 
23 
28 
23 
30 

34 
23 
24 
25 
26 

27 
31 
32 
20 
30 

26 
30 
29 
28 
20 

28 
30 
20 
23 
34 

22 
31 
23 
31 
32 


38 
38 
35 
38 
27 

35 
33 
38 
39 
37 

37 
34 
36 
40 
34 

40 
42 
32 
36 
34 

35 
37 
37 
35 
32 

46 
33 
37 
42 
36 

41 
36 
33 
38 
38 

36 
34 
34 
32 

38 

33 
39 
38 
40 
41 

40 
37 
36 
40 
38 

39 
52 
31 
38 
37 

35 
41 
41 
35 
43 


56 
51 
44 
46 
40 

47 
45 
50 
43 
52 

46 
42 
48 
47 
42 

49 
48 
43 
42 
52 

44 
43 
48 
40 
50 

50 
44 
52 
49 
48 

43 

48 
44 
48 
49 

51 
47 
47 
48 
43 

55 
49 
44 
51 

46 

50 
45 
51 
55 
51 

49 
51 
51 

48 
51 

47 
47 
46 
45 
47 


59 
52 
50 
60 
56 

57 
57 
59 
60 
57 

57 
55 
51 
54 
53 

55 
61 
56 
54 
56 

55 
53 
60 
54 - 

50 

56 
56 
59 
59 
55 

56 
54 
59 
53 
56 

59 
55 
60 
55 

62 

53 
57 
59 
59 
53 

60 
55 
53 
62 
57 

67 
60 
62 
53 
57 

52 
56 
55 
55 
54 


54 
47 
53 
58 
52 

54 
55 
57 
52 
53 

58 
51 
54 
51 
55 

53 
47 
51 
54 
51 

49 
50 

54 
48 

58 

54 
54 
59 
63 
64 

58 
55 
55 
55 
62 

56 
54 
58 
59 
53 

59 
55 
60 
61 

47 

57 
47 
59 
57 
59 

61 
56 
54 
58 
57 

59 
55 
58 
54 
56 


40 
37 

41 
44 
40 

37 
44 
43 
39 
40 

49 
42 

42 
51 
47 

42 
38 
36 
35 
39 

48 
46 
39 
44 
36 

40 
42 
49 
32 
41 

40 
42 
40 

47 
52 

55 
39 
36 

47 
49 

51 
39 
38 
50 
46 

39 
45 
40 
52 
43 

51 
52 
42 
40 
54 

38 
41 
35 
42 
40 


26 
27 
23 
30 
30 

28 
35 

27 
28 
28 

41 
40 
38 
28 
36 

32 
14 
32 
35 

28 

33 
32 
26 
32 
24 

29 
38 
30 
36 
41 

33 
35 
33 
34 

29 

27 
35 
34 

29 

27 

32 
38 
27 
28 
32 

35 
23 
37 
35 
31 

36 
36 
26 
40 
19 

32 
40 
30 
34 
24 


9 -8 -8 
-2 -23 -23 
8 13 -18 
1-6 
-1 -20 

14 -14 -14 
14 22 -4 
31 -9 -9 
16 -2 -18 
1 -15 -15 

14 13 -13 
21 -7 -7 
10 -17 
5 -11 -18 
28 -3 -14 

16 -10 -14 
-1 -5 -15 
20 15 -18 
12 15 -11 
27 8 -5 

3 9-8 
12 -10 -10 
4 -6 -16 
10 -3 -9 
8 -15 

6 8-9 
7 -2 -20 
2 0-8 
30 -3 -21 
14 2 -9 

16 -12 -12 
26 -1 -8 
12 -13 -13 
19 2 -15 

14 7 -18 

25 10 6 
25 19 -3 
25 10 -2 
28 -7 -10 
20 7 -6 

12 5 
27 3 -16 
20 18 -4 
12 -4 -6 
23 8 -8 

14 -2 -6 
22 -3 -10 
21 14 -14 
15 -8 -11 

16 -4 -7 

22 8 8 
21 -3 -3 
31 8 -8 
12 -13 -16 

17 -8 -8 

12 -3 -7 
23 -1 -9 
20 3 -6 
1 1 -9 
1 7 -16 


1872 


. . 12 


1873 


. . 16 


1874 


. . -6 


1875 


. . 20 


1876... 


4 


1877 


. 4 


1878 


. . 1 


1879 


. . -18 


1880 


19 


1881... 


. . -13 


1882 


1 


1883 ... . 


. . -17 


1884 


. . -18 


1885 


. . -13 


1886... 


. . 14 


1887 


. . -15 


1888 


. . 17 


1889 





1890 


. . -5 


1891 


10 


1892 


. . -5 


1893 


. 16 


1894 


. . -9 


1895 


. . -9 


1896 


g 


1897 ...... 


. . -20 


1898 


6 


1899 


. . 13 


1900 


. . -8 


1901... 




1902 


. -8 


1903 


. . -6 


1904 


. . 15 


1905 


. . -5 


1906... 


11 


1907 


. 3 


1908 





1909 


. . -10 


1910 


. . -5 


1911... 





1912 


. . 16 


1913 





1914 . . . 


4 


1915 


. . -8 


1916 . . 


. . 6 


1917 


. . 4 


1918 


. . -14 


1919 


. . 11 


1920 


. . -5 


1921... 


8 


1922 


. . 1 


1923 


. . 11 


1924 


. . 16 


1925 


5 


1926... 


. -7 


1927 


. . 9 


1928 


. . -6 


1929 


. . 9 


1930... 


. . -16 



1949] CLIMATE OF ILLINOIS: APPENDIX A 189 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 






Year 


Jan. 


Feb. 


Mar. 


Apr. May June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHICAGO 


, Cook county, concluded 


1931 


6 


12 
12 
-19 
-2 

4 

-14 
1 
11 
4 
5 

-5 
2 
-3 
-5 
-4 

-3 
-21 


21 
2 
6 
10 
22 

14 
14 
19 
11 
9 

1 
26 

-7 
9 
22 

22 
-12 


32 
31 
33 
32 

26 

22 
31 
27 
21 
24 

33 
28 
23 
22 
29 

28 
17 


40 48 
41 52 
40 51 
43 49 
36 49 

39 48 
39 48 
36 54 
39 49 
31 47 

40 51 
39 50 
30 45 
34 45 
31 35 

37 40 
27 35 


60 55 
55 58 
60 56 
57 50 
60 50 

58 57 
54 62 
61 59 
59 56 

52 54 

55 58 
53 48 
53 54 
52 53 
49 51 

56 47 
49 47 


50 
44 
48 
43 

41 

46 
44 
42 
44 

42 

44 
29 
36 
39 
43 

40 
29 


40 
33 
32 
31 
35 

31 
30 
35 
32 
42 

30 
22 
31 
30 
30 

34 

14 


24 
17 
9 
28 
17 

18 
14 
16 
26 

8 

17 
15 
20 

19 
15 

19 
-2 


20 
-4 

-9 

-1 
-3 

1 
6 
2 
3 
-5 

12 
-2 
-3 
-7 
-7 

1 
-23 


6 
-4 
-19 

-7 

-7 

-17 
1 

3 
-14 

-5 
-13 
-13 

-7 
-8 

-3 
-23 


1932 


1 


1933 


. . 16 


1934 


. . -7 


1935 


. . -7 


1936 . . 


. . -17 


1937 


5 


1938 





1939 


9 


1940 


. . -14 


1941 


3 


1942 


. . -13 


1943 


. . -13 


1944 . . . 


3 


1945 


. . 8 


1946 


. . -2 




. . 20 






DUBUQUE, Dubuque 


county, 


Iowa 










1851... 


. . 14 



-8 
-12 
-15 

-8 

-29 


12 

11 
12 
5 

1 


29 
19 
31 
22 

28 

35 


30 52 
32 43 
54 
42 42 
39 45 

40 56 


52 51 
49 45 
58 49 
61 56 
58 43 


36 
36 
45 

46 
46 


22 
30 
16 
31 
26 


18 
14 
18. 
12 
15 


-12 
-4 
1 
9 
-17 


-14 
-21 

-is 

-17 


1852 


. . -21 


1853 




1854 


. . 12 


1855 


. . -7 


1856 . . 


. . 20 


1857 




67 54 
61 51 
55 54 
62 54 

56 53 
62 56 
53 46 
60 52 
55 52 

61 50 

58 49 
59 50 

58 54 
58 56 

56 49 


44 
44 
42 

42 

40 
47 
39 
41 
50 

34 
42 
38 
39 
51 

31 


23 
33 

21 
32 

29 
19 
23 
30 
21 

22 
30 
27 
20 
26 

30 


5 
16 

4. 

2 
14 
-6 
4 
25 

20 

17 
8 
22 

-2 


15 
-11 
-16 

-8 

-7 
-5 
-13 
-23 

-18 


-2 
-10 

-12 

-12 


-ii 

-16 
-24 

-21 
-24 
-13 
-29 
-18 

-20 
-20 
-23 
-15 
-12 

-12 


1858 


8 


-14 
-5 
-3 

-9 
-24 
-12 
14 

8 

-20 
-15 
-23 
-2 

-7 

-3 


4 
24 
23 

15 
8 
16 
4 
-2 

7 
-7 
-1 
-5 
4 

27 


27 
25 
33 

37 
30 
32 
35 
13 

28 
29 
18 
19 
31 

32 


41 55 
43 41 
45 55 

42 55 
38 50 
42 51 
37 52 
41 57 

41 52 
36 56 
46 54 
42 50 
48 56 

40 55 


1859 


. . 13 


I860 


. . 24 


1861... 


. . -21 


1862 


. . 22 


1863 


4 


1864 


. . -29 


1865 . . 


. . 16 


1866... 


:. -13 


1867 


. . -20 


1868 


. . 12 


1869 


. . 15 


1870 


2 


1871 


. . -2 


1874 


. . 12 


-9 
-31 

-8 
16 
13 
-12 
2 

-9 
2 
-15 
-8 
-20 

-21 
-12 
-23 
-16 
-1 


7 
-10 

5 

29 

7 


5 
15 
5 

-4 
-1 

-1 
2 
-5 
23 
-12 


25 

14 

28 
21 
35 
18 
26 

17 
25 
26 
27 
25 

14 
16 
28 
25 
26 


42 51 
27 45 

32 41 
31 40 
35 45 
35 46 
44 50 

39 51 
31 40 
32 50 

39 47 
26 44 

36 42 
41 45 
30 42 
36 42 
30 52 


56 55 
56 41 

55 46 
54 53 
55 54 
58 47 
53 51 

57 51 
50 48 
51 49 
52 49 
52 46 

53 46 
55 44 
54 48 
50 50 
54 48 


41 
38 

39 
42 
38 
36 
37 

42 
36 
34 

47 
42 

35 
38 
31 
31 
32 


26 
26 

23 
31 
23 
24 

22 

36 
30 
31 
28 

28 

26 
15 
28 
22 
26 


6 
-9 

7 
7 
23 
14 
-5 

6 
13 

7 
-1 
19 

11 
-12 
16 
8 
24 


-14 
-10 

-19 
19 
-10 
-19 
-19 

8 
-17 
-6 
-17 
-9 

-24 
-16 
8 
10 
1 


-14 
-31 

-19 
-19 
-10 
-22 
-19 

-24 
-17 
-26 
-24 
-22 

-24 
-32 
-30 
-16 
-16 


1875 


. . 23 


1876 


. . 5 


1877 


. . 19 


1878 


. . -5 


1879 


. . 22 


1880 


. . 10 


1881... 


. . 24 


1882 


. . 5 


1883 


. . 26 


1884 


. . 24 


1885 


. . -22 


1886... 


. . -23 


1887 


. . 32 


1888 


. . 30 


1889 


. . -4 


1890 


. . 16 







Data since July, 1942, are from the Chicago Municipal Airport. 



190 BULLETIN NO. 532 [April, 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. Annual 


DUBUQUE, Dubuque 


county, 


Iowa, 


concluded 


1891... 


4 


-13 
-5 
-21 
-8 
-21 

-7 
-10 
-4 
-26 
-10 

-10 
-10 
-14 
-11 
-25 

-14 
-14 
-8 
3 
-11 


-14 
-7 
-12 
6 

-10 
-20 
-21 
2 
-14 

10 
-3 
-16 

-2 
-2 

9 
8 

-24 
-5 

8 
7 
-23 
-2 
-10 

-19 
-6 
6 
-5 

-7 

-10 

-7 
-5 
-4 

-5 
-31 


-1 
3 
5 

7 
2 

2 
7 
13 

-4 
-4 

-2 
-3 
11 
8 
8 

5 
16 
15 
6 
20 

12 
-5 
-10 
4 
16 

6 
3 
10 
-4 
-3 

12 
8 
-7 
15 
-1 

5 

17 
10 

7 
6 

20 
-2 
4 
10 
10 

9 
9 
8 
8 
6 

-3 
21 
-6 
5 
14 

13 
-12 


20 
23 
26 
28 
24 

20 
25 
22 

17 
27 

26 
24 
28 
24 
29 

27 
24 
19 
21 
22 

23 
27 
31 
19 
24 

22 
27 
27 
28 
19 

25 
30 
20 
21 

27 

22 
26 
21 
24 
26 

27 
30 
31 
29 

24 

16 
30 
25 
21 
21 

32 
28 
26 
23 
30 

31 
13 


36 
36 
34 
40 
30 

48 
35 
37 
42 
33 

38 
36 
33 
39 

40 

34 
29 
30 
30 
36 

31 
37 
37 
38 
37 

35 
34 
33 
37 
35 

35 
48 
32 
33 
34 

38 
40 
39 
33 
37 

34 
37 
36 
41 
31 

43 
43 
37 
38 
35 

40 
37 
35 
34 
31 

34 
26 


47 
50 
52 
43 
50 

49 
40 
52 
49 
51 

39 
45 
40 
47 
49 

50 
46 
49 
46 
43 

49 
48 
40 
45 
44 

49 
47 
51 
52 
50 

44 
44 
48 
47 
46 

45 
47 
46 
43 
47 

45 
56 
47 
54 
42 

48 
46 
50 
47 
53 

50 
47 
48 
48 
38 

43 
38 


49 
48 
56 
50 
40 

50 
55 
53 
51 
53 

54 
53 
53 
47 
52 

54 
55 
53 
53 
54 

49 
52 
55 
56 
51 

57 
51 
52 
56 
52 

59 
50 
55 
49 
52 

51 
52 
51 
52 
51 

53 
53 
57 
55 
61 

52 
53 
59 
55 
52 

55 
52 
55 
53 
50 

55 
40 


45 
47 
44 
46 
53 

48 
46 
53 
53 

59 

52 
50 
51 
45 
57 

48 
51 
46 
51 

48 

45 
47 
52 
49 
40 

48 
47 
53 
50 
49 

52 
51 
45 

51 
53 

55 
46 

49 
48 
53 

51 
52 
52 
43 

46 

54 
53 
55 
54 

51 

54 
47 
52 
53 

51 

46 
40 


40 
42 
32 
35 
34 

33 
38 
40 
24 
38 

38 
36 
35 
39 
49 

43 
36 
30 
36 
41 

41 
33 
36 

43 
42 

35 
36 
36 
43 
34 

44 
39 
35 
34 
46 

31 
39 
33 
35 
36 

44 
38 
42 
38 
38 

44 
38 
44 
36 
36 

39 
29 
41 
45 
36 

40 
24 


29 
25 
22 
26 
16 

24 
32 
25 
33 
35 

31 
30 
28 
29 
23 

23 
24 
26 
23 
24 

27 
30 
22 
26 
26 

32 
20 
32 
25 
24 

33 
32 
21 
28 
10 

28 
31 
25 
30 
22 

35 
31 
26 
31 
26 

22 
25 
32 
28 
35 

26 
18 
30 
31 
31 

35 
10 


-7 1 -13 
5 -12 -18 
-1 -11 -23 
6 -5 -22 
11 -21 

6 -10 
-6 -23 
-2 -10 -10 
23 -5 -26 
10 -3 -13 

12 -17 -17 
22 -6 -18 
7 -17 -17 
15 -12 -23 
7 -1 -25 

11 3 -14 
18 9 -14 
11 1 -8 
13 -11 -19 
16 -2 -25 

5 -7 -11 
17 1 -26 
19 15 -10 
4 -20 -20 
18 3 -22 

5 -15 -22 
17 -14 -20 
16 5 -21 
8 -18 -23 
13 -9 -14 

14 -7 -7 
19 -14 -14 
18 -7 -16 
9 -19 -24 
10 -15 -15 

10 -10 -13 
20 -8 -14 
17 1 -10 
-4 -4 -24 
-2 -24 

17 15 -2 
10 -11 -11 
6 -18 -23 
25 -7 -8 
10 -9 -16 

15 -8 -26 
4 -1 -6 
7 -7 -7 
21 2 -5 
2 -9 -18 

18 6 -10 
10 -4 -17 
12 -3 -16 
16 -12 -12 
12 -9 -12 

15 -10 -11 
-12 -24 -32 


1892 


. 18 


1893 


. -23 


1894 


. 22 


1895 


. 20 


1896:.. 


. -10 


1897 . 


. 23 


1898 


4 


1899 


. -18 


1900 


. 13 


1901... 


. 11 


1902 


. -18 


1903 


-5 


1904 


. 23 


1905 


. 12 


1906 


. 4 


1907 


. -8 


1908 


. 6 


1909 


. -19 


1910 


. -25 


1911... 


. 11 


1912 


. -26 


1913 


-7 


1914 





1915 


. -22 


1916... 


. 22 


1917 


. 14 


1918 


. -16 


1919 .... 


. 23 


1920 


. 13 


1921... 





1922 


. -9 


1923 


. 11 


1924 


. -24 


1925 


. 6 


1926... 


. -13 


1927 


. -14 


1928 


. 10 


1929 


. -16 


1930 


. -24 


1931 


. 2 


1932 


. -8 


1933 


7 


1934 


. 8 


1935 


. -16 


1936 . . 


. 26 


1937 


. -6 


1938 


n 


1939 


1 


1940 


. -18 


1941... 





1942 


. -17 


1943 


. 16 


1944 


. -3 


1945 


. -12 


1946 


. -11 


Lowest. . . . 


.-32 



1949] CLIMATE OF ILLINOIS: APPENDIX A 191 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. Annual 


PEORIA, 


Peoria county 


1856... 


. . 20 


-20 
-1 
-15 
2 
-6 

-1 
-10 
-4 
-6 
14 

-13 
-7 
-6 
-2 
-7 

6 

-7 
-8 
5 
-18 

-2 
22 
15 
-2 
12 

-2 
9 
-13 
5 
-22 

-15 
-1 
-12 
-5 

8 

-4 
7 
-10 
5 
-22 

-2 
-2 
-2 
-22 
-1 

-6 
-6 
-13 
-8 
-26 

2 
-9 
-3 
7 
-9 

5 
-9 
-4 
-3 
12 



-1 
4 
25 
23 

12 
14 
16 

10 

8 

10 
-6 
8 
-3 
10 

28 
10 
-4 
16 
-4 

8 
7 
29 
5 
18 

13 
19 
14 

10 

17 
12 
7 
23 
-1 

7 
11 
8 
13 
14 

13 
15 
21 

4 

10 
10 
16 
19 
15 

5 
23 
20 
11 

18 

13 
3 
-6 
8 
19 


27 
18 
25 
25 

28 

29 
28 
27 
31 
22 

30 
27 
19 
25 
30 

32 
26 
30 
20 

21 

32 
25 
34 
19 

28 

17 
26 
28 
31 
30 

23 
28 
32 
30 
31 

28 
27 
30 
32 
27 

26 
28 
24 
17 
29 

29 
28 
28 
25 
28 

26 
22 
22 
21 
22 

22 
30 
32 
22 
22 


41 
32 
40 
45 
31 

33 
40 
36 
35 
40 

37 
30 
42 
41 
43 

39 
37 
38 
43 
30 

35 
35 
38 
39 
43 

40 
35 
35 
44 
37 

39 
48 
35 
35 
33 

38 
45 
40 
39 
39 

41 
35 
40 

44 
36 

38 
43 
35 
39 
40 

28 
29 
31 
32 
35 

30 
34 
35 
37 
37 


48 
43 
51 
35 
41 

50 
49 
49 
46 
57 

47 
52 
50 
50 
50 

53 
53 

49 
50 

47 

48 
46 
50 
50 
55 

50 
47 
50 
50 

48 

48 
53 
46 
46 

57 

52 
55 
55 
45 
56 

52 
44 
53 
49 
51 

46 
48 
44 
53 
45 

48 
45 
45 
47 

42 

51 

44 
40 
47 
42 


58 
53 
58 
48 
55 

50 
59 
50 
53 
52 

62 
52 
62 
57 

57 

57 
57 
57 
59 
61 

59 
57 
60 
62 
52 

57 
53 
52 
59 
53 

55 
59 

58 
59 
60 

52 
50 
62 
57 

54 

53 
53 
50 
52 
52 

53 
54 
56 

48 
52 

51 
50 
49 
47 
50 

46 
54 
52 
54 
51 


46 
47 
50 
50 
53 

53 
59 
41 
52 
50 

48 
52 
53 
56 
53 

48 
53 
54 
60 
50 

58 
57 
58 
52 
53 

58 
51 
50 
50 
52 

52 
52 
52 
55 
52 

50 
52 
50 
53 
55 

50 
46 
54 
57 
65 

53 
56 
53 

48 
54 

44 
48 
46 
50 

41 

47 
44 
54 
53 
41 


35 
41 
44 
41 
44 

36 
45 
35 
41 
51 

39 
41 
36 
40 
53 

34 
37 
35 
43 
35 

40 
48 
43 
39 
38 

44 
43 

41 
50 

48 

44 
41 
35 
36 
40 

46 
44 
40 
42 
36 

.36 
35 

48 
26 
40 

37 
37 
37 
43 
45 

47 
33 
32 
35 
39 

44 
32 
37 
43 
40 


22 
23 
32 
25 

26 

26 
20 
25 
32 

28 

28 
30 
26 
14 
31 

29 
28 
21 
25 
30 

26 
35 
27 
26 

24 

37 
35 
34 
29 
30 

32 
21 
30 
28 
26 

30 
28 
23 
32 
25 

27 
31 
25 
33 
35 

31 
31 
28 
30 

24 

22 
22 
24 
22 
21 

25 
29 
21 

22 
26 


12 -6 -20 
-1 18 -16 
11 1 -15 
14 -13 -13 

-8 -18 

14 2 -3 
23 7 -11 
4 -11 -11 
10 -7 -22 

26 -8 -8 

22 3 -13 
37-9 
25 -13 -13 
14 4 -3 
20 -13 -13 

3 -6 -6 
-22 -22 
10 10 -22 
4 1-6 
8 -3 -20 

14 -13 -13 
13 22 -11 
28 -15 -15 
18 -6 -21 
-1 -16 -16 

9 12 -18 
14 -13 -13 
11 -1 -22 
16 -10 -27 
26 -2 -22 

17 -15 -18 
5 -6 -21 
23 18 -15 
7 14 -5 
26 16 -2 

2 8-4 
11 14 -6 
7 -6 -13 
12 -2 -17 
11 5 -22 

6 13 -4 
10 -1 -16 
1 -1 -2 
24 -1 -22 
17 7 -6 

17 -10 -10 
29 -1 -9 
14 -7 -13 
17 3 -9 
11 1 -26 

19 3 2 
14 14 -9 
15 6 -3 
18 -12 -12 
15 3 -9 

6 3-5 
20 5 -17 
16 16 -6 
7 -19 -19 
17 -18 


1857 


. . -16 


1858 


. . 13 


1859 


. . -10 


I860 


. . -18 


1861... 


. -3 


1862 


. . 11 


1863. . . . 


. . 10 


1864 


. . -22 


1865 


. . -2 


1866 


. 4 


1867 


.. -9 


1868 


. . -10 


1869 


. . 17 


1870 


4 


1871... 


1 


1872 


. . -7 


1873 


. . 22 


1874 


. . 6 


1875 


. . -20 


1876... 


5 


1877 


. . -11 


1878 . . 


4 


1879 


. . -21 


1880 


. . 23 


1881 . . . 


. . -18 


1882 


2 


1883 


. . 22 


1884 


. . -27 


1885 


. . -22 


1886... 


. . -18 


1887 


. . -21 


1888 


. . 15 


1889 





1890 


. . 2 


1891 


. 12 


1892 


. . 6 


1893 


. . -13 


1894 . . 


. . 17 


1895 


. . 10 


1896... 


. -4 


1897 .... 


. . 16 


1898 


7 


1899 


. . -11 


1900 


. . 6 


1901 . . . 


1 


1902 


Q 


1903 


. -5 


1904 


g 


1905 


. . 5 


1906... 


4 


1907 


. . 4 


1908 


1 


1909 


. . -9 


1910 


. . 8 


1911. 


-5 


1912 


. . 17 


1913 


.. -3 


1914 


6 


1915... 


. . -18 



192 BULLETIN NO. 532 [April, 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, 


Peoria county, concluded 


1916 


..-17 


-5 


9 


24 


35 


49 59 


46 34 


29 


11 


-11 


-17 


1917 


. . -5 


-16 


5 


23 


33 


40 49 


46 35 


21 


15 


-13 


-16 


1918 


..-21 


-15 


18 


28 


31 


52 51 


55 33 


33 


18 


6 


-21 


1919 


. . -14 


8 


6 


23 


40 


55 57 


49 43 


26 


14 


-9 


-14 


1920 


. . -9 


-5 


1 


14 


34 


48 53 


43 38 


24 


13 


-6 


-9 


1921 


6 


13 


18 


28 


34 


48 57 


52 45 


31 


15 


9 


6 


1922 


. . -4 


3 


17 


30 


45 


48 50 


47 40 


29 


17 


-6 


-6 


1923 


. . 15 


-6 


-2 


26 


32 


45 54 


46 37 


23 


24 


-2 


-6 


1924 


..-20 


6 


18 


22 


36 


48 49 


51 38 


28 


10 


-24 


-24 


1925 


2 


4 


-2 


28 


30 


49 52 


52 50 


7 


12 


-7 


-7 


1926 


. -7 


12 


7 


19 


36 


45 50 


55 31 


28 


10 


-2 


-7 


1927 


..-20 


17 


20 


27 


38 


47 53 


48 39 


32 


19 


-5 


-20 


1928 


..-14 


7 


14 


23 


35 


44 51 


53 29 


26 


18 


5 


-14 


1929 


. . -8 


-9 


17 


29 


34 


41 54 


49 35 


30 


-1 


-4 


-9 


1930 


. . -19 





12 


31 


37 


44 47 


52 38 


22 


-1 


10 


-19 


1931 


6 


13 


18 


27 


36 


44 56 


50 41 


34 


25 


21 


6 


1932 


1 


14 


3 


28 


35 


51 51 


52 36 


25 


16 


-13 


-13 


1933 


. . 16 


-19 


8 


31 


37 


46 58 


52 43 


29 


11 


-4 


-19 


1934 


. . -4 


-9 


-1 


28 


38 


53 58 


48 39 


27 


24 


3 


-9 


1935 


. . -7 


7 


20 


28 


34 


48 60 


44 34 


25 


14 


-9 


-9 


1936 


..-20 


-14 


17 


18 


.43 


43 53 


54 47 


27 


15 


2 


-20 


1937 


. . -8 


1 


18 


28 


42 


45 51 


56 34 


23 


4 


4 


-8 


1938 


.. -1 


11 


23 


23 


37 


50 56 


55 38 


31 


12 


4 


-1 


1939 


5 


4 


13 


22 


37 


48 58 


54 38 


29 


20 


-1 


-1 


1940 


. . -13 


-4 


10 


23 


33 


51 49 


50 34 


32 


8 


-1 


-13 


1941... 


2 





7 


35 


37 


52 53 


54 38 


27 


15 


12 


2 


1942 


..-11 


4 


23 


29 


38 


44 51 


45 24 


21 


17 


-3 


-11 


1943 


..-12 


-4 


-11 


22 


34 


46 57 


51 39 


29 


17 


-7 


-12 


1944 


2 


-9 


10 


22 


31 


43 51 


54 45 


31 


18 


-5 


-9 


1945 


. . -8 


-3 


20 


31 


32 


39 51 


50 43 


30 


14 


-8 


-8 


1946 


o 


-1 


11 


28 


35 


43 56 


46 37 


31 


21 


-3 


-3 


Lowest. . . 


-27 


-26 


-11 


14 


28 


35 46 


41 24 


7 


-1 


-24 


-27 


SPRINGFIELD 


, Sangamon county 


1879... 












58 


54 38 


29 


20 


-3 




1880 


. . 24 


13 


21 


31 


44 


54 55 


52 41 


26 


6 


-14 


-14 


1881... 


. -9 


5 


16 


19 


37 


51 57 


54 47 


42 


14 


15 


-9 


1882 


8 


17 


23 


28 


40 


49 56 


55 43 


41 


20 


-7 


-7 


1883 


..-10 


2 


14 


30 


34 


49 54 


55 39 


34 


12 


4 


-10 


1884 


. . -22 


6 


7 


32 


41 


51 61 


49 51 


35 


14 


g 


-22 


1885 


. . -14 


-11 


12 


30 


38 


50 53 


48 44 


36 


30 


6 


-14 


1886... 


..-13 


-11 


18 


24 


43 


50 58 


54 45 


34 


20 


-6 


-13 


1887 


..-18 





18 


26 


47 


51 58 


49 37 


20 


4 


-10 


-18 


1888 


..-17 


-9 


6 


30 


35 


43 59 


48 36 


32 


23 


16 


-17 


1889 


2 


-5 


22 


26 


35 


42 56 


54 37 


30 


7 


14 


-5 


1890 


. . -2 


4 


2 


26 


35 


50 51 


48 36 


23 


26 


14 


-2 


1891... 


1 


-5 


2 


25 


36 


50 49 


48 44 


32 


4 


12 


_5 


1892 


. . -7 


7 


8 


26 


38 


54 52 


52 46 


27 


13 


-7 


-7 


1893 


. . -12 


-8 


8 


31 


40 


54 61 


52 39 


24 


8 





-12 


1894 


. . -17 


3 


8 


32 


36 


40 54 


52 41 


32 


12 


-2 


-17 


1895 


, . -10 


-20 


12 


29 


34 


55 54 


56 36 


21 


9 


4 


-20 


1896... 


. . -4 





14 


26 


49 


54 52 


52 39 


30 


8 


9 


-4 


1897 


..-11 


4 


16 


28 


36 


46 55 


51 40 


34 


12 


2 


-11 


1898 


7 





24 


25 


40 


55 54 


58 47 


27 


2 


2 





1899 


. . -9 


-21 


2 


19 


44 


52 58 


56 31 


35 


27 





-21 


1900 


-3 


-4 


5 


27 


39 


51 56 


63 41 


37 


18 


9 


-4 



Data since May, 1943, are from the Peoria Municipal Airport. 



1949] 



CLIMATE OF ILLINOIS: APPENDIX A 



193 



Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. Feb. 


Mar 


. Apr. 


May June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. Annual 


SPRINGFIELD, Sangamon county, concluded 


1901... 


1 3 


7 


30 


40 


48 


56 


55 


35 


35 


18 


-11 -11 


1902 


. .. -8 -6 


10 


26 


44 


47 


55 


53 


38 


34 


26 


-8 


1903 


. .. -6 -12 


16 


29 


35 


43 


58 


55 


42 


29 


13 


-7 -12 


1904 


. . . -9 -5 


19 


28 


45 


53 


53 


51 


44 


30 


18 


1 -9 


1905 


. . . -8 -24 


18 


30 


45 


48 


55 


56 


49 


29 


12 


6 -24 


1906... 


8 


3 


28 


35 


48 


55 


50 


50 


26 


25 


9 


1907 


2 


26 


27 


32 


49 


55 


54 


40 


27 


22 


20 


1908 


6 2 


25 


26 


34 


46 


56 


54 


35 


29 


17 


12 2 


1909 


. .. -3 9 


15 


25 


34 


51 


51 


53 


39 


26 


20 


-7 -7 


1910 


. .. -1 -5 


24 


22 


34 


42 


57 


49 


45 


29 


19 


8 -5 


1911... 


. -2 14 


17 


29 


35 


58 


53 


49 


51 


34 


13 


10 -2 


1912 


...-19 -9 


10 


32 


44 


45 


57 


51 


39 


33 


22 


8 -19 


1913 


3 





34 


34 


41 


56 


57 


36 


23 


23 


21 


1914 


9 1 


9 


25 


38 


50 


59 


58 


46 


27 


10 


-7 -7 


1915 


...-12 17 


23 


26 


41 


45 


51 


46 


44 


33 


19 


6 -12 


1916... 


. -9 -2 


9 


27 


42 


53 


60 


52 


38 


31 


14 


-3 -9 


1917 


6 -14 


10 


28 


35 


44 


55 


52 


39 


25 


18 


-8 -14 


1918 


,..-20 -10 


21 


27 


37 


52 


54 


57 


37 


35 


23 


12 -20 


1919 


. . . -8 12 


10 


27 


42 


56 


61 


52 


45 


34 


17 


-4 -8 


1920 





4 


17 


35 


49 


55 


50 


40 


30 


16 


-1 -1 


1921... 


7 18 


20 


29 


39 


49 


61 


53 


48 


34 


25 


14 7 


1922 


... -4: 8 


20 


34 


49 


52 


55 


54 


44 


34 


21 


-2 -4 


1923 


. . 20 -3 


2 


27 


3ft 


51 


57 


51 


39 


26 


30 


3 -3 


1924 


..-16 10 


15 


26 


41 


51 


51 


51 


39 


34 


14 


-14 -16 


1925 


...3 8 


3 


30 


35 


53 


56 


55 


52 


13 


18 


-4 -4 


1926... 


. -2 16 


9 


22 


37 


51 


54 


59 


36 


32 


13 


2 -2 


1927 


. . -13 20 


21 


31 


43 


49 


55 


53 


44 


37 


24 


-3 -13 


1928 , 


... -9 8 


17 


25 


38 


51 


57 


54 


35 


32 


19 


9 -9 


1929 


, . . -5 -4 


20 


31 


32 


41 


55 


51 


38 


31 





-2 -5 


1930 


..-18 6 


12 


32 


40 


47 


52 


57 


45 


25 


7 


13 -18 


1931... 


9 15 


24 


31 


35 


48 


60 


55 


48 


38 


26 


27 9 


1932 


6 18 


7 


34 


44 


56 


56 


57 


45 


29 


15 


-5 -5 


1933 


. . 15 -10 


11 


34 


38 


50 


61 


56 


53 


31 


17 


-10 


1934 


-3 


5 


34 


42 


59 


61 


48 


43 


31 


28 


2 -3 


1935 


. . -3 11 


21 


30 


37 


51 


64 


52 


40 


30 


18 


-3 -3 


1936... 


..-16 -9 


21 


20 


43 


51 


58 


60 


46 


30 


15 


2 -16 


1937 


5 


21 


34 


45 


50 


57 


64 


42 


29 


9 


7 


1938 


2 13 


26 


29 


37 


54 


62 


60 


43 


34 


13 


9 2 


1939 


. . 13 8 


17 


24 


37 


54 


60 


57 


44 


30 


26 





1940 


...-12 4 


15 


23 


36 


50 


53 


53 


40 


39 


11 


3 -12 


1941... 


5 5 


11 


38 


44 


56 


57 


55 


44 


30 


15 


16 5 


1942 


, .. -6 8 


28 


33 


42 


50 


58 


51 


33 


24 


21 


5 -6 


1943 


... -7 


2 


27 


37 


52 


60 


56 


41 


31 


22 


-3 -7 


1944 


...11 -6 


16 


26 


34 


49 


58 


56 


51 


39 


19 


-6 


1945 


.. -3 2 


26 


33 


38 


46 


55 


55 


46 


34 


18 


1 -3 


1946 


5 5 


23 


32 


42 


48 


59 


52 


42 


35 


25 


6 5 


Lowest. . . 


-22 -24 





17 


32 


40 


49 


46 


31 


12 





-14 -24 


URBANA, 


Champaign county 


1889 


... -2 -8 


18 


25 


28 


40 


50 


30 


32 


25 


4 


15 -8 


1890 


. .. -5 7 


2 


29 


33 


47 


45 


44 


33 


27 


21 


8 -5 


1891... 


6 -9 


-1 


22 


30 


49 


42 


40 


41 


27 


2 


11 -9 


1892 


...-15 




26 


36 


51 


46 


47 


42 


19 


7 


-7 -15 


1893 






30 


37 


53 


48 


37 


31 


18 


6 


-6 


1894 


..-21 -5 


10 


25 


32 


34 


47 


41 


38 


28 


12 


-4 -21 


1895 


... -2 8 


7 


27 


28 


42 


43 


48 


32 


25 


4 


15 -2 


1896... 


. . . -5 -4 


6 


21 


45 


49 


49 


44 


30 


24 


9 


8 -5 


1897 


...-15 -2 


20 


21 


31 


44 


53 


42 


32 


32 


11 


1 -15 


1898 


5 -6 


15 


22 


38 


49 


47 


53 


45 


40 






1899 


. . . -12 -25 


-2 


15 


42 


50 


51 


49 


24 


29 


17 


-6 -25 


1900 


... -5 -6 





24 


33 


47 


51 


63 


34 


32 


12 


1 -6 



194 BULLETIN NO. 532 [April, 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


URBANA, 


Champaign county, 


concluded 


1901... 


. -7 


-2 


5 


28 


38 44 48 


54 


33 


29 


16 


-15 


-15 


1902 


. . -7 


-14 


9 


23 


40 45 50 


52 


34 


31 


14 





-14 


1903 


..-12 


-17 


15 


19 


26 40 54 


52 


35 


21 


8 


7 


-17 


1904...... 


..-15 


-11 


11 


22 


38 40 41 


46 


41 


28 


14 


2 


-15 


1905 


..-11 


-25 


20 


26 


40 46 52 


54 


46 


27 


13 


3 


-25 


1906... 


2 


-7 


-5 


26 


30 46 52 


47 


48 


20 


20 


7 


-7 


1907 





-8 


21 


22 


30 42 48 


50 


36 


28 


16 


13 


-3 


1908 


2 


-2 


24 


20 


34 41 50 


51 


33 


27 


14 


4 


-2 


1909 


. . -2 


1 


14 


22 


32 42 49 


50 


36 


21 


19 


-13 


-13 


1910 


. . -1 


-12 


17 


23 


34 38 34 


46 


41 


21 


17 


4 


-12 


1911 





11 


10 


26 


34 50 47 


49 


43 


29 


9 


8 





1912 


..-22 


-10 


10 


29 


37 41 55 


47 


35 


28 


16 


4 


-22 


1913 


3 


-9 


-1 


31 


33 40 51 


55 


37 


26 


16 


16 


-9 


1914 


8 


-1 


8 


22 


41 52 62 


60 


41 


24 


5 


-13 


-13 


1915 


..-15 


14 


20 


26 


39 43 50 


39 


42 


31 


12 


6 


-15 


1916... 


. . -9 


-7 


1 


26 


36 52 61 


50 


32 


30 


12 


-6 


-9 


1917 





-12 


10 


24 


34 38 52 


48 


37 


22 


19 


-12 


-12 


1918 


..-21 


-11 


18 


23 


34 45 51 


52 


34 


38 


17 


10 


-21 


1919 


. . -8 


11 


9 


24 


38 52 56 


50 


42 


33 


16 


-4 


-8 


1920 


. . -6 


-3 


1 


19 


33 47 52 


47 


38 


26 


11 


-12 


-12 


1921... 


6 


14 


20 


26 


35 47 57 


51 


45 


32 


18 


13 


6 


1922 


. . -6 


4 


17 


29 


46 51 50 


51 


40 


30 


18 


-6 


-6 


1923 


. . 18 


-8 


1 


21 


32 45 51 


45 


34 


21 


25 


12 


-5 


1924 


..-18 


8 


17 


23 


36 43 48 


48 


36 


30 


16 


-20 


-20 


1925 





5 


-1 


28 


29 48 53 


52 


47 


13 


18 


-7 


-7 


1926... 


. -3 


14 


8 


22 


32 47 48 


56 


34 


28 


14 


-1 


-3 


1927 


..-16 


16 


20 


29 


38 46 51 


47 


36 


35 


20 





-16 


1928 


..-11 


5 


15 


22 


34 44 52 


54 


30 


27 


17 


6 


-11 


1929 


. . -6 


-8 


15 


30 


32 40 50 


51 


36 


30 


o 


-8 


-8 


1930 


..-21 


7 


14 


31 


39 46 50 


53 


40 


21 


-2 


9 


-21 


1931... 


3 


12 


20 


27 


35 44 55 


51 


43 


37 


21 


22 


3 


1932 


7 


12 


5 


28 


39 48 52 


51 


40 


28 


8 


-9 


-9 


1933 


. . 11 


-13 


9 


31 


37 45 56 


53 


48 


31 


12 


-2 


-13 


1934 


. . -2 


-10 


4 


29 


37 53 54 


44 


42 


29 


24 


-1 


-10 


1935 


. . -3 


10 


22 


29 


35 48 57 


48 


38 


27 


16 


-9 


-9 


1936 


..-21 


-11 


18 


20 


38 47 53 


55 


43 


26 


20 


5 


-21 


1937 


. . -2 


5 


19 


29 


40 46 49 


56 


38 


26 


9 


6 


-2 


1938 


3 


11 


26 


26 


34 51 60 


55 


39 


30 


11 


8 


3 


1939 


. . 10 


4 


14 


21 


35 51 56 


54 


41 


28 


25 


-5 


-5 


1940 


..-13 


3 


11 


22 


32 46 48 


49 


35 


35 


12 


2 


-13 


1941... 


3 


1 


7 


34 


40 50 54 


51 


40 


27 


13 


15 


1 


1942 


..-10 


2 


22 


30 


39 45 54 


46 


29 


21 


18 


-6 


-10 


1943 


. . -4 


-4 


-3 


23 


32 46 56 


52 


39 


31 


20 


O 


-4 


1944 


6 


-10 


13 


23 


29 44 49 


50 


44 


33 


18 


-5 


-10 


1945 


. . -5 


-1 


24 


30 


34 37 50 


47 


44 


31 


17 


-8 


-8 


1946 


. . -4 





22 


27 


38 43 53 


45 


41 


32 


22 


8 


-4 


Lowest 


-22 


-25 


-5 


15 


26 34 34 


30 


24 


13 


-2 


-20 


-25 


CAIRO, Alexander county 


1872... 






19 


35 


42 55 65 


62 


51 


37 


7 


-7 




1873 


. -8 


10 


10 


35 


44 61 62 


60 


47 


24 


18 


19 


-8 


1874 


6 


23 


24 


33 


48 58 68 


67 


51 


31 


15 


20 


6 


1875 


..-11 


4 


19 


24 


37 54 68 


61 


45 


34 


22 


7 


-11 


1876 


. . 18 


8 


11 


41 


44 53 61 


63 


42 


32 


19 








1877 


. . -4 


25 


14 


34 


43-50 62 


63 


51 


40 


17 


21 


-4 


1878 


. . 11 


26 


36 


44 


44 57 66 


64 


49 


28 


30 


4 


4 


1879 


. . -6. 


8 


21 


29 


47 53 68 


59 


45 


35 


25 


12 


-6 


1880 


. . 30 


23 


28 


34 


48 60 62 


57 


47 


36 


11 


-3 


-3 



1949] CLIMATE OF ILLINOIS: APPENDIX A 195 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 








CAIRO, 


Alexander county, 


continued 


1881... 





16 
28 
12 
12 
1 

-3 
12 
10 

6 

18 

16 
24 
6 
12 
-9 

13 
11 
11 
-14 


15 
8 
-1 
11 

-7 

3 
10 
10 
13 
5 

17 
-2 
11 
9 
25 

16 
-4 
9 
18 
11 

22 
14 
9 
15 
20 

27 
23 
13 
5 
20 

23 
29 
1 
4 
17 

-4 
18 
19 
15 
20 


27 28 
35 33 
23 37 
19 38 
16 34 

23 29 
24 33 
21 40 
27 34 
11 36 

17 29 
20 34 
10 33 
17 38 
23 37 

22 36 
31 36 
28 32 
6 27 
15 33 

15 35 
17 32 
23 37 
24 33 
32 35 

20 36 
33 32 
33 33 

28 34 
28 28 

22 35 
22 40 
14 38 
18 29 
24 30 

22 34 
16 33 
27 30 
20 31 
13 26 

27 34 
22 41 
9 28 
22 26 
11 41 

20 29 
23 39 
24 32 
26 43 

22 40 

27 38 
11 40 
22 42 
14 39 
28 37 

29 26 
25 38 
29 34 
29 30 
22 29 


56 
47 
38 
49 
40 

48 
53 
42 

41 

42 

41 
46 
48 
41 
40 

56 
42 
42 
55 

42 

45 
50 
39 
48 
53 

42 
39 
45 
40 
45 

43 
48 
49 
44 

48 

49 
41 
40 
47 
43 

41 
54 
42 
43 
39 

43 
49 
47 
39 
51 

39 
48 
51 
46 

41 

49 
50 
47 
48 
42 


57 
56 
57 
56 
53 

55 
54 
51 
46 
62 

62 
58 
60 
46 
62 

58 
56 
63 
58 
61 

55 
55 
50 
61 

58 

58 
53 
58 
61 

50 

62 
54 
52 
62 
56 

57 
50 
57 
62 
56 

60 
60 
54 
56 
61 

55 
57 
55 
53 
54 

54 
63 
54 
62 
56 

58 
59 
60 
60 

58 


66 
61 
60 
67 
62 

62 
66 
65 
62 
59 

57 
60 
67 
62 
60 

61 
60 
62 
62 

65 

62 
63 
66 
62 
61 

63 
61 
62 
63 
63 

59 
66 
65 
64 
60 

68 
63 
60 
65 
60 

67 
58 
59 
56 
60 

61 
59 
62 
62 
60 

66 
62 
65 
67 

67 

62 
61 
68 
65 
59 


66 
61 
61 
57 
54 

58 
58 
58 
62 
56 

52 
57 
58 
58 
60 

59 
59 
62 
68 
65 

64 
60 
57 

58 
63 

59 
63 
63 
61 
57 

57 
54 
63 
64 
50 

59 
58 
64 
61 

57 

64 
60 
57 
62 
58 

64 
57 
63 
57 
61 

59 
59 
63 
56 
58 

63 
67 
66 
61 

59 


50 
48 
47 
57 
51 

51 
44 
42 
45 
45 

52 
49 
44 
48 
43 

44 
46 
55 
36 
53 

42 
44 
48 
49 
56 

56 
48 
43 
45 
56 

58 
46 
43 
50 

49 

43 
45 

41 
52 

41 

52 
52 
50 
41 
60 

46 
46 
43 
48 
50 

50 
52 
54 
52 

48 

52 
47 
48 
49 
45 


44 
45 
38 
38 
39 

32 
28 
36 
36 
32 

33 
31 
33 
38 
30 

34 
38 
33 
42 
44 

42 
39 
35 
36 
38 

34 
34 
37 
33 

28 

37 
38 
32 
32 
36 

34 
28 
42 
44 
32 

38 
38 
29 
38 
26 

33 
40 
38 
34 
32 

42 
38 
38 
36 
37 

35 
31 
35 
34 

41 


19 
28 
15 
22 

28 

25 
10 
28 
20 
31 

14 
21 
19 
20 
24 

16 

21 
15 
28 
26 

22 
29 
17 
30 
21 

26 
26 
25 
28 
27 

18 
26 
27 
11 
26 

19 
23 
29 
23 

19 

31 
27 
29 
26 
26 

24 
29 
25 
9 
21 

32 
24 
25 
33 
23 

20 
16 
17 
29 
16 


22 
4 4 
14 7 
-2 -16 
14 -4 

11 -9 
5 -1 
20 
26 6 
20 11 

22 14 
6 
14 
1 -4 
16 -9 

18 8 
16 4 
7 7 
11 -14 
22 

-4 -4 
8 7 
9 -1 
15 1 

18 -7 

17 3 
23 10 
19 10 
4 4 
18 5 

20 5 
17 -8 
24 11 
4 4 
20 10 

3 3 

-7 -7 
18 -16 
8 4 
14 11 

23 21 
16 14 
16 9 
-3 -4 
2 2 

12 8 
2 1 
21 -2 
5 5 
19 -8 

27 9 
5 5 
8 1 
14 4 
9 6 

18 -4 
9 9 
17 12 
11 11 
20 -6 


1882 


. . 13 


1883 


7 


1884 


. . 16 


1885 


4 


1886... 


. -9 


1887 


. . -1 


1888 





1889 


. . 19 


1890 


. . 17 


1891... 


. 20 


1892 





1893 





1894 


. . 4 


1895 


. . -2 


1896... 


8 


1897 


4 


1898 


. . 12 


1899 





1900 


9 


1901... 


15 


1902 


7 


1903 


. . 10 


1904 


1 


1905 


Q 


1906... 


13 


1907 


. . 10 


1908 


. . 16 


1909 


5 


1910 


6 


1911... 


5 


1912 


. . 8 


1913 


. . 17 


1914 


. . 18 


1915 


. . 10 


1916... 


6 


1917 


9 


1918 


. . -16 


1919 


4 


1920 


. . 13 


1921... 


. 21 


1922 


. . 15 


1923 .... 


. . 28 


1924 


. . 4 


1925 


6 


1926... 


8 


1927 


1 


1928 


. . 2 


1929 


. . 13 


1930 


. . 8 


1931... 


9 


1932 


. . 20 


1933 


. . 20 


1934 


7 


1935 


6 


1936... 


. -3 


1937 


. . 13 


1938 


. . 12 


1939 


. . 23 


1940... 


. -6 



196 BULLETIN NO. 532 [April, 

Table 8. Monthly and Annual Lowest Temperatures 
(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, 


Alexander county, concluded 


1941... 


15 


16 
16 
10 

8 
11 

20 

-14 


19 
31 
7 
25 
32 

32 
6 


42 
35 
33 
30 
38 

38 
24 


49 58 
47 55 
48 59 
39 55 
43 52 

48 53 
37 46 


64 63 
65 56 
57 58 
60 59 
61 57 

63 53 
56 50 


52 
39 
46 
53 

54 

47 
36 


37 
31 
32 
39 
40 

42 
24 


27 
28 
25 
23 

26 

32 

7 


21 
17 
5 
13 

7 

19 

-7 


15 
-5 
5 

8 

7 

13 

-16 


1942 


. . -5 


1943 


5 


1944 


14 


1945 


. . 12 


1946 


. . 13 




. . 16 






ST. LOUIS, 


Missouri 












1871... 


9 


18 
5 
2 
11 
-3 

4 
27 
21 
4 
14 

5 
19 

7 
-6 

-8 
4 
-4 

4 

4 
20 
-1 
9 
-12 

5 
8 
6 
-16 
1 

12 
-1 
-6 
2 

-18 

5 
3 
6 
13 

-1 

16 
-7 
4 
1 
21 

7 
-10 
2 
16 
5 


34 
18 
8 
19 
12 

8 
9 
34 
16 
23 

20 
25 
19 
10 
13 

23 
23 
14 
25 
6 

9 
14 
10 
14 
15 

19 
20 

27 
3 
10 

15 
17 
20 
22 
24 

13 
30 

28 
19 
29 

21 
15 
5 
16 
28 

15 
14 
22 
16 

7 


40 
33 
33 
27 
22 

35 
27 
43 
25 
30 

23 
29 
32 
34 
32 

24 
32 
35 
30 
30 

27 
30 
33 
34 
35 

30 
35 
29 
25 
32 

33 
31 
32 
28 
32 

31 
30 
29 
29 
25 

32 
34 
38 
26 
30 

30 
30 
30 
32 
?.?. 


45 62 
44 64 
44 58 
44 55 
32 51 

39 52 
38 48 
41 53 
45 50 
44 57 

42 53 
42 48 
37 53 
44 52 
40 52 

47 57 
51 57 
40 50 
42 47 
37 57 

42 54 
40 56 
43 58 
40 44 
40 60 

56 56 
43 51 
41 61 
48 58 
48 55 

46 54 
52 53 
39 50 

47 59 
49 56 

40 54 
35 49 
38 52 
35 57 
39 47 

39 63 
44 49 
41 47 
44 57 
47 54 

45 55 
38 49 
43 58 
46 60 
37 57 


67 58 
70 61 
58 60 
62 63 
65 55 

57 61 
60 60 
64 60 
62 55 
59 55 

62 63 
58 58 
59 58 
65 54 
60 54 

63 61 
68 52 
64 56 
61 60 
57 54 

55 53 

58 58 
67 57 
61 60 

60 58 

58 60 
62 59 
57 63 
63 64 
64 68 

63 63 
61 58 
65 58 
59 57 
61 60 

61 57 
60 60 
61 59 
57 56 

60 54 

58 52 
62 55 
64 64 
65 63 
55 52 

66 55 
62 58 
59 62 
66 58 
61 56 


44 
47 
42 
50 
40 

43 
51 
45 
41 
45 

49 
46 
43 
54 
50 

47 
45 
43 
42 
41 

51 
48 
44 
48 
42 

45 
45 
51 
37 
49 

43 
45 
45 
50 
55 

52 
46 
38 
43 
53 

56 
43 
42 
52 
47 

41 
43 
42 
50 
45 


39 
36 
25 
30 

28 

31 
41 
26 
32 

28 

43 
42 
35 
34 
37 

35 
24 
36 
35 

29 

37 
32 
33 
38 
30 

36 
42 
32 
41 

41 

42 
38 
35 
36 
32 

30 
31 
35 
32 
28 

35 
37 
28 
31 
37 

30 
25 
41 
39 
35 


12 
5 
14 
11 
12 

15 
14 
31 
21 

8 

15 
22 
18 
13 
32 

23 
10 
28 
14 
32 

10 
22 
15 
18 
16 

13 
16 
10 
31 
25 

23 
29 
14 
25 
15 

26 
23 
21 
24 
21 

12 
26 
28 
13 
23 

15 
24 
27 
20 
19 


2 
-14 
10 
13 
-3 

-5 
21 
-3 
-1 
-15 

15 
-6 
8 
-7 
6 

-3 
-2 
21 
20 

17 

14 
-2 
8 
1 

7 

17 
10 
3 
6 
15 

-10 
5 

1 
3 
13 

10 
23 
14 
-1 
11 

12 
12 
22 
2 
22 

2 
-4 
14 
1 
5 


2 
-14 
-10 
-1 
-16 

-5 
-4 
-3 
-12 
-15 

-9 
-6 



-22- 
-10 

-8 
-10 
-12 

4 

4 
-2 
-2 
-11 
-12 

5 
-2 
3 
-16 

1 

-10 

-1 
-6 
-6 
-18 

5 
3 

6 

-1 
-1 

-2 
-14 

4 
1 
-4 

-4 
-10 
-17 
-3 
5 


1872 





1873 


. . 10 


1874 


. . 1 


1875 


. . -16 


1876 . . 


. . 13 


1877 


. . 4 


1878 


8 


1879 . . . 


. . 12 


1880 


. . 23 


1881 .... 


. 9 


1882 


6 


1883 


. 4 


1884 


. . 22 


1885 


. . -10 


1886 


Q 


1887 


. . -10 


1888 


. . -12 


1889 


. . 13 


1890 


8 


1891 


. . 15 


1892 


. . 1 


1893 


. . -2 


1894 


. . 11 


1895 


. . 8 


1896 


5 


1897 


. . 2 


1898 


. . 10 


1899 


4 


1900 . . . 


4 


1901 


8 


1902 





1903 


3 


1904 


. . 6 


1905 


. . 6 


1906... 


11 


1907 


6 


1908 


9 


1909 


. . 1 


1910 


3 


1911 


. -2 


1912 


. . 14 


1913 


7 


1914 . . . 


. . 15 


1915 


. . 4 


1916 .. 


. . 4 


1917 


. . 11 


1918 


. . -17 


1919 





1920... 


5 



1949] CLIMATE OF ILLINOIS: APPENDIX A 197 

Table 8. Monthly and Annual Lowest Temperatures 
(Concluded) 



Year 


Jan. 


Feb. Mar 


. Apr. 


May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. Annual 


ST. Louis, 


Missouri, concluded 


1921 . . . 


12 


23 22 
12 21 
1 4 
13 21 
12 7 

20 15 
21 22 
11 20 
4 22 
12 18 

18 26 
20 9 
-5 14 
2 13 
13 23 

-8 24 
9 22 
16 27 
12 20 
9 18 

12 15 
9 29 
3 5 
18 
8 25 

12 27 
-18 3 


30 
40 
26 
25 
36 

28 
34 
27 
36 
39 

35 
38 
36 
36 
32 

20 
35 
31 
26 
25 

39 
34 
30 
30 
34 

35 

20 


40 
54 
38 
42 
38 

44 
44 
42 
32 
46 

40 
48 
45 
47 
39 

50 
47 
44 
43 
38 

48 
45 
43 
35 
41 

43 

32 


53 
57 
55 
54 
60 

54 
54 
51 
47 
52 

54 
64 
56 
65 
50 

55 
55 

58 
58 
58 

57 
51 
55 
55 

48 

49 
44 


65 
60 
62 
55 

58 

60 
56 
63 

58 
57 

66 
62 
65 
68 
68 

64. 
62 
67 
66 
56 

61 
66 
61 
62 
62 

63 
55 


57 
59 
56 

57 

58 

64 
53 
60 
57 

59 

58 
59 
61 
52 
56 

66 
68 
64 
60 

58 

61 
56 
60 

58 
59 

56 
52 


50 
50 
47 
40 
57 

39 
47 
43 
46 
50 

51 
50 
56 

45 
44 

51 

47 
45 

48 
44 

47 
36 

48 
54 
48 

47 
36 


38 
38 
29 
37 
21 

33 
40 
37 
35 
31 

42 
35 
34 
36 
34 

32 
32 
36 
33 
43 

32 
27 
34 
36 
39 

38 
21 


28 
25 
30 
20 
23 

17 
27 
23 
3 
15 

30 
19 
20 
31 

20 

19 
14 
15 
30 
13 

23 
23 
25 
16 
20 

28 
3 


16 12 
5 3 
11 1 
-8 -11 
-1 -1 

6 3 
-1 -3 
16 -5 
6 3 
18 -13 

30 9 

4 -5 
10 2 
2 1 

9 -10 
6 4 
13 5 
4 4 
11 -12 

18 10 
7 -5 
1 -5 
6 
5 

12 10 
-15 -22 


1922 


3 


1923 


. . 24 


1924 


. . 11 


1925 


8 


1926. ... 


3 


1927 


. . -3 


1928 


. 5 


1929 


3 


1930 


. . -13 


1931 


9 


1932 


. . 13 


1933 


. . 20 


1934 


4 


1935 


1 


1936 


. . -10 


1937 


4 


1938 


5 


1939 . . 


. . 19 


1940 


. . -12 


1941 


10 


1942 


. . -5 


1943 


. . -5 


1944 


. . 16 


1945 





1946 


. . 10 


Lowest. . 


..-22 



APPENDIX B 

MONTHLY AND ANNUAL PRECIPITATION 

The three following tables give monthly and annual precipita- 
tion at 100 stations, including 10 outside the state which repre- 
sent adjacent areas in Illinois. The stations are grouped accord- 
ing to the U. S. Weather Bureau climatological divisions of the 
state as shown in Fig. 1 (page 98). Records are of varying 
lengths, but all extend thru 1946. Measurements are in inches. 
It has been deemed unwise to fill out interrupted records with 
estimated data or with measurements from other stations, unless 
from one nearby and then for a period of years. It is a well- 
known fact that, especially during the summer months, one 
place may have a heavy shower, while only a few miles away 
there may be no rain at all. Filling in an interrupted record with 
data for only a few months from another station may therefore 
give a distorted picture. It has, however, been considered safe to 
substitute measurements for a number of years from a nearby 
place. Over that long a time irregularities will cancel themselves 
out, unless there is an actual difference in precipitation. If two 
stations are very close together such a difference, if it occurs at 
all, would be very slight. 

(See next page for index to weather stations) 



199 



200 



BULLETIN NO. 532 



[April, 



Index to Weather Stations 



Northern Illinois (Table 

Page 

Aledo 201 

Aurora 201 

Beloit 202 

Chicago 204 

Davenport 205 

Dixon 207 

Dubuque 207 

Dwight 209 

Elgin 210 

Freeport 210 

Galesburg 211 



9) 

Page 

Galva 212 

Geneseo 213 

Henry 214 

Joliet 215 

Kankakee 216 

LaSalle 216 

Marengo 217 

Minonk 219 

Monmouth 220 

Morris 221 

Morrison.. ..221 



Central Illinois (Table 10) 

Beardstown 233 

Bloomington 233 

Burlington 234 

Carlinville 235 

Casey 236 

Charleston 237 

Clinton 237 

Danville 238 

Decatur 239 

Effingham 240 

Fairview 241 

Golden 241 

Graf ton.. ..242 



Southern Illinois (Table 

Anna 268 

Benton 269 

Cairo 269 

Cape Girardeau 271 

Carbondale 271 

Carmi 272 

Chester 272 

Du Quoin 273 

Edwardsville 274 

Fairfield . . . . 275 



Griggsville 243 

Havana 244 

Hillsboro 245 

Hoopeston 246 

Jacksonville 247 

Keokuk 248 

LaHarpe 249 

Lincoln 250 

Louisiana 251 

Macomb 252 

Morrisonville 253 

Newton 254 

Palestine 254 

11) 

Flora 276 

Golconda 277 

Grand Chain 278 

Greenville.. ..279 



Page 

Mount Carroll 222 

Oregon 223 

Ottawa 224 

Pawpaw 225 

Pontiac 226 

Rockford 227 

Streator 228 

Sycamore 229 

Tiskilwa 230 

Walnut 231 

Waukegan 232 



Pana 255 

Paris 256 

Peoria 257 

Quincy 259 

Roberts 259 

Rushville 260 

Springfield ..261 

Tuscola 262 

Urbana 263 

Watseka 264 

White Hall 265 

Windsor.. ..267 



New Burnside 285 

Olney 286 

Paducah 287 

St. Louis.. ..288 



Harrisburg 280 Salem 290 

Mascoutah 280 Shawneetown 291 

McLeansboro 281 

Mount Carmel 282 

Mount Vernon 284 

Nashville.. ..284 



Sparta 291 

Vincennes 292 

Waterloo.. ..293 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



201 



Table 9. NORTHERN ILLINOIS : Monthly and Annual Precipitation 

(Inches) 






Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ALEDO, Mercer county 


1901 


. 1.44 


1.88 


2.72 


1.28 


1.93 2.28 


2.16 


.44 2.36 


.87 


1.06 


.91 


19.33 


1902 


. .58 


.82 


2.57 


3.39 


5.36 7.81 


8.79 


6.89 5.11 


3.51 


2.10 


1.96 


48.89 


1903 


. .73 


1.53 


1.86 


3.60 


6.26 3.84 


1.89 


6.53 6.35 


5.09 


.98 


.66 


39.32 


1904 


.1.84 


.37 


2.78 


1.95 


3.33 2.03 


4.49 


7.58 3.62 


.62 


.15 


1.75 


30.51 


1905 


. .58 


1.52 


2.06 


3.72 


3.24 4.52 


2.46 


2.14 1.70 


2.33 


2.05 


1.29 


27.61 


1906... 


. 2.57 


2.28 


2.42 


2.40 


4.37 4.91 


1.18 


3.20 5.63 


1.57 


3.12 


1.67 


35.32 


1907 


. 4.10 


.26 


2.87 


2.27 


5.13 2.66 


6.74 


5.60 2.02 


.62 


1.40 


.54 


34.21 


1908 


. .47 


2.58 


1.85 


2.20 


6.88 4.93 


3.98 


5.73 1.92 


1.40 


2.63 


.72 


35.29 


1909 


. 1.32 


2.34 


1.61 


4.00 


4.19 3.36 


4.10 


.44 3.04 


2.23 


4.79 


3.66 


35.08 


1910 


. 1.79 


.98 


.70 


3.62 


4.37 2.82 


2.15 


2.73 2.95 


.87 


.42 


.95 


24.35 


1911 


. 1.52 


2.99 


1.37 


3.29 


1.98 1.30 


3.84 


1.85 13.44 


2.50 


4.06 


1.90 


40.04 


1912 


. .17 


1.08 


1.55 


2.95 


1.78 2.09 


4.47 


1.40 1.77 


4.71 


.88 


.74 


23.59 


1913 


. 1.09 


1.77 


2.87 


2.14 


5.62 5.61 


.10 


2.49 2.19 


2.81 


1.24 


.83 


28.76 


1914 


.1.10 


.76 


2.36 


1.00 


2.62 4.87 


.67 


1.48 7.01 


2.81 


.38 


1.76 


26.82 


1915 


. 1.53 


2.17 


.59 


.72 


6.62 2.66 


7.30 


1.59 6.73 


.67 


3.45 


.99 


35.02 


1916 


.4.71 


.22 


2.63 


2.59 


6.37 5.13 


.49 


1.11 3.20 


3.65 


1.51 


l.*41 


33.02 


1917 


. .52 


.32 


1.16 


5.72 


2.59 5.69 


3.84 


.77 4.41 


2.30 


.06 


.50 


27.88 


1918 


. 1.10 


1.33 


.10 


2.87 


7.54 4.54 


4.86 


4.83 2.32 


3.11 


2.38 


1.66 


36.64 


1919 


. .30 


1.96 


2.18 


4.09 


6.34 3.55 


3.35 


1.55' 7.10 


3.26 


2.35 


.23 


36.26 


1920 


. .49 


.16 


3.60 


4.24 


2.84 2.83 


2.72 


.41 1.85 


1.86 


1.13 


.91 


23.04 


1921... 


. 1.02 


.37 


3.86 


6.76 


3.48 6.19 


2.08 


6.42 9.90 


2.58 


1.05 


2.54 


46.25 


1922 


. 1.11 


.96 


3.78 


2.62 


3.78 1.33 


4.90 


.66 2.30 


.67 


4.38 


.95 


27.44 


1923 


. .93 


1.01 


4.65 


1.13 


4.26 5.41 


2.13 


2.39 4.04 


1.40 


1.07 


2.03 


30.45 


1924 


. 1.61 


1.48 


3.21 


1.36 


1.78 10.63 


3.36 


4.66 1.62 


1.26 


.88 


2.45 


34.30 


1925 


. .76 


1.76 


1.27 


3.09 


.92 6.43 


3.82 


2.64 7.09 


4.02 


1.63 


1.83 


35.26 


1926 


. 1.46 


1.61 


1.84 


1.33 


1.82 7.29 


3.25 


7.95 11.78 


2.22 


3.68 


.73 


44.96 


1927 


. .76 


2.37 


4.21 


3.98 


5.60 3.78 


2.07 


1.57 4.48 


5.17 


4.28 


2.23 


40.50 


1928 


. .41 


1.79 


2.43 


4.59 


2.73 5.07 


5.76 


4.40 2.35 


4.63 


4.70 


1.73 


40.59 


1929 


. 3.50 


.99 


3.03 


6.91 


2.21 4.66 


5.83 


2.32 5.12 


5.10 


1.24 


.99 


41.90 


1930 


. 2.29 


1.51 


.68 


3.20 


2.81 7.67 


1.67 


8.55 .75 


2.37 


2.32 


1.00 


34.82 


1931 


. .64 


.41 


3.04 


3.30 


4.33 3.60 


4.69 


.81 5.71 


3.33 


4.21 


2.62 


36.69 


1932 


. 1.00 


1.23 


2.21 


1.62 


3.63 


4.83 


6.16 2.63 




2.04 


2.57 




1933 


. . 2.10 


.55 


3.25 


1.66 


8.17 3.06 


1.31 


2.00 3.17 


1.33 


.23 


1.32 


28.15 


1934 


. .80 


.56 


1.34 


2.04 


1.38 3.73 


5.88 


3.24 9.15 


1.14 


6.22 


1.11 


36.59 


1935 


,. 1.85 


1.39 


2.57 


2.11 


7.12 7.57 


3.20 


3.59 4.39 


1.45 


4.57 


1.22 


41.03 


1936... 


. 1.45 


1.26 


1.13 


1.30 


1.28 .66 


.24 


3.77 10.41 


1.26 


.96 


2.49 


26.21 


1937 


. 3.35 


1.50 


1.86 


4.09 


6.34 2.86 


2.53 


1.44 1.39 


2.19 


1.21 


1.37 


30.13 


1938 


, . 3.28 


1.44 


3.40 


3.63 


7.22 7.64 


6.87 


4.61 2.03 


1.97 


2.84 


1.07 


46.00 


1939 


, . 1.36 


2.25 


4.24 


3.82 


2.88 6.92 


2.76 


6.40 .60 


1.81 


.65 


.34 


34.03 


1940 


, . 1.48 


1.03 


2.51 


3.77 


1.86 2.86 


2.59 


4.68 .97 


2.11 


1.90 


1.88 


27.64 


1941... 


. . 3.10 


.44 


1.00 


4.88 


3.77 5.64 


2.33 


1.91 5.80 


10.10 


1.23 


1.50 


41.70 


1942 


, . 1.69 


1.93 


1.62 


1.16 


3.63 2.59 


6.33 


2.83 1.70 


.79 


3.15 


4.14 


31.56 


1943 


, . 1 . 67 


1.10 


1.69 


5.38 


6.15 5.02 


2.76 


3.45 1.48 


3.12 


1.49 


.46 


33.77 


1944 


. .73 


2.35 


4.12 


6.90 


4.67 5.41 


2.56 


3.60 2.93 


.90 


4.35 


1.76 


40.28 


1945 


. . .55 


.95 


3.91 


4.09 


7.04 3.89 


.87 


.65 5.41 


.74 


1.08 


2.09 


31.27 


'1946 


.. 2.51 


.28 


5.73 


.82 


4.76 7.65 


2.04 


4.15 2.30 


1.81 


3.03 


1.99 


37.07 


Aver 


1.51 


1.30 


2.44 


3.12 


4.20 4.56 


3.40 


3.34 4.22 


2.45 


2.19 


1.51 


34.24 


AURORA, Kane county 


1881 


. 1.17 


8.06 


3.88 


1.68 


2.61 5.80 


3.19 


.73 3.24 


7.15 


4.97 


3.27 


45.75 


1882 


. . 1 . 14 


2.95 


2.83 


5.98 


5.04 




4.70 1.39 


3.21 


2.10 


2.47 




1883 


. . 2.63 


7.27 


.61 


3.75 


7.23 3.56 


4.44 


.95 1.57 


6.34 


5.55 


2.61 


46.51 


1884 


. . 1.24 


3.74 


2.30 


2.66 


2.26 2.18 


6.38 


2.48 2.42 


4.61 


1.90 


4.59 


36.76 


1885 


. . 2.31 


2.09 


.38 


3.31 


3.16 5.07 


2.59 


7.72 4.04 


3.74 


2.04 


3.05 


39.50 


1886... 


. . 3.63 


1.76 


3.00 


4.24 


5.39 1.21 


.36 


2.97 5.60 


1.80 


1.26 


1.18 


32.40 


1887 


. . 4.36 


5.86 


1.06 


.82 


3.02 .58 


2.34 


3.79 4.33 


3.54 


2.21 


4.25 


36.16 


1888 


. . 1.40 


1.56 


3.19 


2.08 


5.16 .98 


3.20 


5.66 1.89 


3.10 


3.27 


2.61 


34.10 


1889 


. . 2.06 


1.32 


1.47 


2.63 


3.82 4.38 


5.08 


.... 3.82 


1.11 


2.87 


2.53 




1890 


. . 3.24 


1.18 


2.64 


2.17 


4.25 6.97 


.78 


2.38 1.90 


4.53 


1.79 


.78 


32.61 


1891... 


. . 2.35 


2.28 


2.57 


3.94 


2.14 3.24 


2.35 


5.01 .66 


.68 


4.21 


1.66 


31.09 


1892 


. . 1 . 53 


1.18 


2.28 


3.59 


8.29 12.83 


4.48 


2.74 2.36 


1.28 


1.63 


2.26 


44.45 


1893 


.. 1.36 


2.25 


2.69 


4.65 


2.10 3.05 


1.19 


.32 2.70 


3.20 


2.99 


2.60 


29.10 


1894 


. . 2 . 96 


1.95 


3.17 


2.49 


2.76 1.87 


.62 


1.79 7.07 


1.68 


1.93 


.96 


29.25 


1895 


. . 1.53 


.50 


1.14 


1.48 


3.34 1.66 


3.83 


4.80 1.17 


1.11 


5.41 


5.89 


31.86 



202 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


AURORA, Kane county, 


concluded 


1896 


.91 


1.91 


1.75 


3.75 6.12 2.06 


5.60 


2.43 


6.92 


.22 


3.83 


.16 


35.66 


1897 


. 6.02 


1.73 


3.58 


3.04 1.06 5.25 


4.45 


2.23 


.85 


.21 


3.89 


1.32 


33.63 


1898 


. 4.26 


3.21 


5.09 


1.30 4.43 5.39 


1.07 


4.22 


4.25 


4.66 


2.60 


1.66 


42.14 


1899 


. .55 


1.75 


2.92 


.49 7.34 1.59 


4.82 


1.84 


2.23 


2.13 


1.05 


1.61 


28.32 


1900 


. 1.68 


3.72 


2.23 


.78- 4.17 2.94 


3.55 


3.28 


1.99 


2.83 


3.23 


.41 


30.81 


1901 


. 1.39 


1.73 


4.11 


.39 .71 1.81 


4.79 


1.06 


2.34 


1.27 


1.21 


1.40 


22.21 


1902 


. .47 


2.05 


3.14 


2.16 6.18 13.19 


7.43 


2.32 


7.29 


2.02 


2.93 


1.71 


50.89 


1903 


. .83 


1.94 


3.94 


4.23 3.11 4.09 


5.59 


5.39 


7.45 


2.69 


.54 


1.74 


41.54 


1904 


. 2.12 


1.47 


5.02 


4.21 2.51 1.96 


3.81 


5.62 


5.05 


1.53 


.06 


1.69 


35.05 


1905 


. .93 


1.33 


2.33 


3.85 5.94 6.16 


2.72 


4.00 


2.36 


2.32 


2.21 


1.35 


35.50 


1906 


. 3.10 


2.52 


2.12 


1.57 3.10 1.67 


2.12 


3.80 


8.31 


2.25 


2.64 


2.48 


35.68 


1907 


. 3.69 


.26 


3.17 


2.00 4.90 3.70 


5.51 


6.72 


6.08 


1.43 


1.62 


1.07 


40.15 


1908 


. .81 


3.86 


3.58 


3.10 7.19 1.43 


4.50 


5.35 


.95 


.67 


2.02 


.97 


34.43 


1909 


. 1.43 


2.57 


1.34 


8.38 2.64 4.71 


.48 


2.92 


3.28 


1.25 


4.33 


3.43 


36.76 


1910 


. 2.35 


.82 


.36 


3.96 6.20 .50 


1.66 


4.04 


4.47 


1.20 


1.44 


1.11 


28.11 


1911 


. 1.13 


1.70 


1.13 


2.23 2.31 4.64 


2.06 


5.84 


7.23 


3.64 


2.78 


1.77 


36.46 


1912 




.80 


1.14 


2.63 5.33 1.52 


4.33 


2.74 


2.55 


4.58 


1.70 






1913 




2.80 


3.43 


2.16 7.01 1.05 


3.58 


4.37 


1.68 


3.85 


1.74 


.46 




1914 


. 2.64 


.85 


1.61 


.98 5.53 6.54 


1.23 


3.67 


2.84 


2.96 


.88 


2.68 


32.41 


1915 


. 2.39 


2.47 


.50 


.62 8.62 3.05 


9.60 


5.35 


4.35 


1.14 


2.05 


1.30 


41.44 


1916... 


. 4.80 


.85 


2.45 


1.88 3.74 7.19 


.42 


1.16 


4.15 


4.42 


2.36 


2.53 


35.95 


1917 


. 1.82 


.45 


2.69 


2.32 3.96 6.79 


5.91 


1.87 


2.26 


3.25 


.35 


.51 


32.18 


1918 


. 2.80 


2.25 


.45 


3.69 4.27 1.23 


3.15 


2.94 


2.24 


3.72 


2.63 


2.41 


31.78 


1919 


. .18 


2.59 


4.27 


3.03 4.12 3.26 


2.35 


.35 


4.19 


5.29 


2.67 


1.60 


33.90 


1920 




.17 


6.12 


4.45 2.42 4.31 


.58 


3.18 


1.83 


1.63 


.89 


2.28 




1921 


.81 


.42 


4.72 


4.87 2.38 3.22 


.95 


3.50 


5.99 


2.85 


2.85 


4.37 


36.93 


1922 


. 1.42 


.44 


4.44 


2.10 4.47 .48 


3.55 


1.52 


4.12 


3.18 


2.72 


1.10 


29.54 


1923 


. .71 


.75 


3.12 


1.57 2.98 2.86 


3.12 


2.79 


2.94 


5.11 


1.82 


1.72 


29.49 


1924 


. 1.49 


1.45 


2.95 


1.39 3.02 6.54 


2.68 


6.91 


2.99 


.58 


.74 


1.98 


32.72 


1925 


. .65 


1.94 


.69 


3.59 1.57 6.06 


2.49 


.38 


4.42 


3.10 


2.13 


1.09 


28.11 


1926 


. 1.38 


2.33 


1.49 


1.40 2.26 8.76 


3.42 


1.70 


7.54 


1.89 


5.40 


.76 


38.33 


1927 


. 1.27 


.86 


2.23 


6.52 3.58 2.41 


1.13 


2.34 


5.72 


2.67 


5.55 


2.01 


36.29 


1928 


. .42 


1.43 


1.52 


2.88 1.34 4.47 


4.90 


4.75 


1.02 


4.01 


3.97 


2.69 


33.40 


1929 


. 4.11 


.51 


3.02 


6.35 2.45 7.19 


3.56 


1.80 


3.01 


2.98 


1.28 


1.31 


37.57 


1930 


. 2.33 


1.70 


1.60 


3.12 1.80 5.60 


1.28 


4.08 


4.54 


3.07 


1.88 


.32 


31.32 


1931... 


.59 






2.00 4.06 6.02 


2.33 


1.95 


4.12 


4.62 


5.67 


2.68 




1932 


. 2.79 


1.65 


3.10 


1.15 2.57 4.76 


2.91 


4.44 


1.05 


3.78 


1.15 






1933 


. 2.25 


1.15 


2.96 


3.18 6.81 2.48 


3.59 


1.74 


3.85 


3.16 


.60 


.75 


32.52 


1934 


. .82 


.39 


.74 


1.29 .56 5.44 


1.55 


2.15 


5.31 


1.90 


5.63 


1.15 


26.93 


1935 


. 2.20 


1.46 


3.26 


2.12 5.16 3.89 


3.76 


7.58 


4.18 


2.11 


4.23 


1.09 


41.04 


1936... 


. 1.29 


1.08 


.84 


2.04 2.67 .67 


.43 


5.19 


10.23 


2.47 


.93 


4.14 


31.98 


1937 


. 2.78 


1.06 


1.02 


4.47 2.54 4.89 


.41 


4.95 


2.19 


1.94 


1.45 


1.04 


28.74 


1938 


. 2.64 


1.95 


3.57 


1.94 4.12 6.78 


4.26 


3.86 


5.88 


1.44 


1.14 


1.03 


38.61 


1939 


. 2.96 


2.67 


1.81 


3.67 2.76 3.85 


1.41 


2.40 


1.05 


3.77 


.89 


.65 


27.89 


1940 


. 1.65 


1.26 


1.72 


2.78 5.60 5.10 


1.08 


5.89 


.34 


4.14 


2.06 


1.65 


33.27 


1941 . . . 


. 3.07 


1.17 


3.27 


2.03 3.97 4.04 


3.21 


1.46 


7.30 


8.53 


2.19 


.78 


41.02 


1942 


. .75 


2.05 


1.87 


1.12 3.32 2.08 


2.76 


6.49 


4.65 


1.19 


5.57 


3.10 


34.95 


1943 


. 1.75 


1.07 


1.68 


2.96 7.77 3.13 


3.03 


4.82 


1.15 


1.65 


1.40 


.34 


30.75 


1944 


. .89 


1.23 


4.16 


3.02 3.85 3.04 


1.71 


2.10 


2 99 


.47 


.62 


1.24 


25.32 


1945 


. 1.06 


1.26 


2.33 


4.08 6.74 5.26 


.65 


3.55 


9.28 


.94 


2.75 


1.95 


39.85 


1946...... 


. 2.22 


.79 


3.30 


.81 3.46 3.52 


.82 


3.32 


1.47 


2.29 


3.10 


1.62 


26.72 


Aver 


1.96 


1.87 


2.51 


2.80 4.02 4.03 


2.97 


3.45 


3.77 


2.76 


2.48 


1.86 


34.48 


BELOIT, Rock county, Wisconsin 


1850 


. 2.59 


.50 


2.82 


2.81 1.10 7.42 


7.15 


15.73 


2.58 


3.30 


3.30 


1.94 


51.24 


1851... 


. 2.16 


3.43 


.55 


2.35 15.46 5.52 


5.52 


9.85 


3.40 


3.40 


1.63 


2.63 


55.90 


1852 


. 3.39 


.84 


6.75 


3.99 4.75 2.15 


3.49 


1.92 


2.91 


4.98 


2.43 


3.30 


40.00 


1853 


. 2.35 


1.61 


3.22 


4.09 6.42 5.26 


7.15 


5.46 


3.84 


2.65 


4.19 


2.11 


48.35 


1854 


.1.15 


1.60 


1.85 


.60 5.76 




.97 


2.81 


3.60 


.60 


2.03 




1855 


. 4.05 




1.86 


1.80 1.74 4.61 


3.09 


1.38 


2.31 


2.80 


1.60 


1.95 





1949] CLIMATE OF ILLINOIS: APPENDIX B 203 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. Dec. 


Annual 


BELOIT, Rock county, 


Wisconsin, 


continued 


1856... 


.60 


.40 


.50 4.04 


3.92 


2.54 


2.11 


2.92 


2.61 


2.09 


2.98 3.18 


27.89 


1857 


. .10 




1.33 2.80 


4.23 


4.35 


2.63 


5.42 


1.91 


3.91 


1 . 92 1 . 06 




1858 


. 2.15 


1.00 


1.86 3.29 


10.29 


6.26 


8.77 


2.61 


3.93 


1.72 


3.13 1.85 


46.89 


1859 


. 1.09 




4.17 2.45 


2.69 


2.72 


1.42 


.31 


2.23 


.85 


2.31 .89 




1860 


. .84 




.52 .70 




2.99 


1.46 


1.65 


3.83 


3.29 


.67 2.24 




1861... 


. 2.93 


2.15 


2.25 3.60 


4.41 


2.62 


3.61 


3.22 


6.43 


2.92 


1.51 1.99 


37.64 


1862 


. 5.75 


1.21 


1.50 5.39 


2.80 


3.30 


4.04 


3.87 


6.39 


2.37 


1.22 1.75 


39.59 


1863 


. 2.60 


1.50 


2.00 .97 


3.92 


1.49 


4.49 


3.58 


.13 


2.04 


4.06 2.98 


29.76 


1864 


. 2.95 


1.20 


1.43 2.18 


1.06 


1.81 


6.62 


1.77 


3.90 


1.89 


4.10 1.90 


30.81 


1865 


. .30 


1.17 


1.62 1.55 


.73 


3.75 


3.00 


4.00 


5.13 


2.65 


.10 .50 


24.50 


1866... 


. 1.00 


.70 


.90 4.15 


.55 


2.51 


3.53 


8.89 


1.53 


1.51 


2.15 1.60 


29.02 


1867 


. 2.67 


3.80 


.70 


3.85 


2.74 


2.69 


2.50 




.82 


1.24 3.00 




1868 


. 1.06 


.42 


2.79 3.63 


1.93 


2.72 


6.66 


1.26 


4.74 


1.06 


4.26 1.28 


31.81 


1869 


. 2.54 


1.13 


.19 1 . 50 


4.70 


5.63 


1.70 


4.09 


4.48 


.40 


1.70 2.35 


30.41 


1870 


. .86 


1.12 


3.36 .32 


.25 


.54 


2.72 


3.15 


3.89 


2.13 


.88 1.20 


20.42 


1871... 


. 2.79 


1.92 


2.13 2.22 


1.97 


5.35 


2.08 


2.89 


.15 


2.01 


1.83 1.22 


26.56 


1872 


. .45 


.31 


2.08 2.55 


1.25 





1.87 


3.57 


6.32 


.49 


1.37 1.51 


21.77 


1873 


. 2.98 


.46 


1.59 3.04 


5.55 


3.90 


3.55 


3.90 


1.75 


2.00 


1.40 2.75 


32.87 


1874 


. 4.50 


1.37 


1.73 .98 


2.25 


5.07 


1.05 


1.49 


5.12 


1.85 


2.40 .70 


28.51 


1875 


. 1.39 


2.38 


1.87 3.15 


3.05 


5.55 


5.20 


3.70 


7.10 


2.10 


1.95 


37.44 


1876... 


. 3.05 


3.50 


3.40 3.20 


4.45 


4.20 


6.90 


1.60 


4.27 


1.35 


3.70 .85 


40.47 


1877 


. 2.60 


T 


5.60 3.80 


1.55 


4.73 


1.65 


6.95 


.65 


6.15 


3.35 3.88 


40.91 


1878 


. .95 


2.15 


4.05 3.30 


3.90 


4.05 


6.25 


4.06 


3.45 


5.33 


1.00 2.65 


41.14 


1879 


. .40 


1.60 


1.50 2.35 


5.95 


5.50 


4.95 


3.25 


1.55 


1.95 


4.50 2.20 


35.70 


1880 


. 2.40 


1.86 


1.70 3.70 


2.70 


4.60 


3.80 


6.90 


6.82 


.80 


1.45 .29 


37.02 


1881... 


. 2.38 


6.80 


4.44 1.50 


3.25 


5.20 


6.20 


.84 


4.94 


5.95 


2.45 2.69 


46.64 


1882 


. .90 


2.51 


4.10 3.38 


3.55 


6.51 


3.42 


3.49 


2.30 


3.21 


2.44 2.21 


38.02 


1883 


. 1.52 


3.54 


.54 1.47 


6.42 


4.52 


5.50 


2.36 


1.35 


4.25 


2.68 1.53 


35.68 


1884 


. .64 


1.68 


1.52 2.85 


2.83 


5.15 


1.27 


2.94 


2.22 


3.96 


1.71 4.24 


31.01 


1885 


. 1.96 


1.21 


.21 3.75 


1.54 


5.37 


2.99 


9.27 


4.56 


3.20 


.67 2.40 


37.13 


1886... 


. 4.02 


1.28 


4.60 3.53 


2.55 


2.96 


1.19 


5.04 


1.78 


2.60 


1.15 1.22 


31.92 


1887 


. 2.69 


5.16 


1.36 1.08 


.99 


.41 


1.61 


5.79 


5.17 


2.00 


1.42 3.86 


31.54 


1888 


. 1.16 


1.12 


2.83 2.76 


5.60 


3.84 


4.55 


3.34 


1.01 


1.38 


2.08 2.32 


31.99 


1889 


. 1.82 


2.05 


.48 3.85 


5.27 


3.61 


3.73 


.75 


2.44 


.24 


1.46 2.27 


27.97 


1890 


. 2.99 


2.39 


2.21 2.77 


4.72 


6.66 


.28 


3.98 


.61 


4.56 


2.16 .55 


33.88 


1891 


. 2.47 


1.20 


2.64 3.81 


4.16 


5.31 


3.01 


.85 


.03 


2.10 


3.00 2.12 


30.70 


1892 


. 3.22 


1.49 


2.10 4.66 


7.65 


8.61 


3.75 


5.87 


2.57 


.57 


2.03 3.80 


46.32 


1893 


. 2.18 


2.10 


2.81 5.32 


2.11 


4.34 


3.74 


1.41 


2.38 


3.00 


1.96 1.18 


32.53 


1894 


. 1.82 


.98 


2.94 3.49 


3.16 


2.61 


1.23 


1.12 


9.03 


1.82 


2.60 .73 


31.53 


1895 


. 1.83 


.86 


.35 1.31 


2.30 


2.10 


2.90 


3.31 


1.58 


.20 


2.11 1.57 


20.42 


1896... 


.41 


.85 


1.49 2.25 


5.02 


3.15 


5.77 


2.64 


7.59 


.67 


1.53 .49 


31.86 


1897 


. 1.30 


.47 


2.05 4.72 


.70 


5.77 


2.42 


3.02 


1.26 


.65 


1.05 1.25 


24.66 


1898 


. 2.51 


1.29 


4.50 2.65 


3.45 


9.70 


4.79 


5.13 


2.31 


2.44 


1.60 .23 


40.60 


1899 


. .22 


.70 


.28 2.65 


6.15 


2.53 


4.02 


2.49 


3.20 


1.50 


2.26 2.03 


28.03 


1900 


. 2.56 


2.80 


1.05 2.10 


1.64 


2.43 


6.14 


5.11 


2.70 


4.87 


1.84 .73 


33.97 


1901... 


. 1.44 


1.69 


2.75 .45 


2.43 


1.54 


2.13 


.76 


2.03 


.88 


1.17 1.59 


18.86 


1902 


. .65 


1.30 


1.49 1.71 


7.39 


6.57 


9.04 


.83 


5.17 


1.69 


1.99 2.04 


39.87 


1903 


. .57 


.66 


2.74 3.05 


3.53 


.50 


5.73 


4.85 


4.91 


3.11 


1.14 2.17 


32.96 


1904 


. 1.83 


.83 


3.31 1.89 


2.88 


1.06 


1.99 


3.74 


5.95 


2.57 


.10 2.51 


28.66 


1905 


. .94 


1.37 


2.79 1.35 


4.21 










3.20 


1.98 1.48 




1906... 


. 2.73 


1.08 


1.47 1.42 


2.64 


3.49 


2.33 


5.54 


3.19 


2.36 


2.06 .95 


29.26 


1907 


. 2.77 


.54 


1 . 59 2 . 97 


3.73 


5.01 


5.55 




6.20 


.88 






1908 


.1.19 


2.10 


3.58 4.46 


6.33 


4.27 


4.40 


.58 


.91 


1.26 


2.70 1.30 


33.08 


1909 


. 2.26 


2.43 


1.33 6.67 


3.26 


3.96 


.87 


8.51 


3.09 


.65 


3.51 4.47 


41.01 


1910 


. 1.97 


.53 


T 3.64 


3.84 


2.03 


1.22 


4.48 


1.41 


.93 


2.00 .95 


23.00 


1911 


.69 


1.98 


.17 4.40 


2.71 


3.95 


1.40 


7.71 


6.70 


2.32 


4.13 1.14 


37.30 


1912 


. .52 


1.57 


1.37 2.41 


5.09 


1.78 


8.06 


3.19 


5.37 


3.31 


2.11 1.23 


36.01 


1913 


. 1.20 


1.65 


3.43 1.00 


6.12 


1.85 


5.66 


2.11 


3.72 


2.61 


2.00 .24 


31.59 


1914 


. .92 


.88 


2.72 1.10 


4.19 


6.22 


2.95 


1.95 




2.17 


.35 2.33 


32.28 


1915 


. 2.02 


3.16 


.75 .23 


5.58 


5.41 


4.33 


3.71 


5.78 


1.09 


2.69 .55 


35.30 



204 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


BELOIT, Rock county, Wisconsin, 


concluded 


1916... 


. 4.49 


1.07 


5.79 


3.35 


3.54 8.53 


.03 2.38 


6.12 


2.33 


.99 


.57 


39.19 


1917 


. .70 


.13 




3.15 


3.33 5.09 


2.02 .62 


3.24 


4.06 


.28 


.68 




1918 


. 3.70 


2.55 


1.98 


3.00 


4.15 1.96 


2.06 2.71 


1.71 


2.93 


1.52 


1.88 


30.15 


1919 


. .30 


2.10 




3.22 


2.91 2.59 


3.08 1.35 


4.90 


6.36 


2.86 


1.45 




1920 


. .86 


.35 


4.63 


2.90 


1.44 4.86 


1.25 2.73 


1.42 


1.31 


1.53 


2.33 


25.61 


1921 


.25 


.05 


3.33 


5.08 


1.86 2.56 


1.84 6.01 


7.30 


3.74 


1.40 


3.34 


36.76 


1922 


. 1.24 


1.93 


3.55 


2.86 


7.55 .38 


4.32 .72 


3.26 


.24 


2.94 


1.26 


30.25 


1923 


. .50 


.74 


3.79 


1.45 


1.42 4.83 


3.72 3.88 


4.85 


3.28 


.88 


2.02 


31.36 


1924 


. 2.09 


.95 


2.06 


3.59 


1.87 6.90 


3.57 6.69 


2.10 


.22 


1.28 


1.24 


32.56 


1925 


. .46 


3.40 




2.67 


1.10 5.55 


5.75 2.10 


5.76 


3.61 


1.41 


1.84 




1926 


. 1.22 


2.08 


1.96 


2.16 


3.83 4.54 


7.71 2.60 


5.22 


2.31 


2.99 


.53 


37.15 


1927 


. .93 


1.56 


2.69 


4.73 


5.39 1.87 


1.11 .73 


5.98 


5.11 


2.57 


1.55 


34.22 


1928 


. .41 


.54 


1.06 


1.88 


1.84 4.29 


3.50 5.87 


1.69 


5.09 


5.39 


2.17 


33.73 


1929 


. 1.86 


.66 


1.93 


4.56 


1.71 4.59 


4.11 1.61 


3.98 


2.88 


1.18 


.75 


29.82 


1930 


. 2.16 


.95 


1.41 


4.00 


1.90 5.93 


1.73 2.11 


2.50 


3.18 


1.17 


.44 


27.48 


1931 


.64 


.75 


1.89 


1.72 


2.72 5.90 


1.73 2.26 


4.34 


4.44 


5.39 


2.80 


34.98 


1932 


. 1.35 


.79 


2.64 


.77 


2.27 4.92 


3.11 1.85 


.99 


4.87 


1.09 


2.01 


26.66 


1933 


. .85 


1.31 


2.89 


2.70 


8.37 1.38 


5.22 1.10 


2.36 


1.84 


.45 


.77 


29.24 


1934 


. 1.18 


.24 


1.00 


1.47 


.80 1.86 


3.28 2.25 


5.01 


1.57 


7.20 


1.25 


27.11 


1935 


. 2.42 


1.83 


2.99 


1.72 


5.81 4.50 


5.54 3.36 


1.83 


1.54 


4.49 


.65 


36.68 


1936... 


. 1.42 


2.29 


.76 


1.73 


.94 2.69 


.63 7.05 


8.20 


3.85 


.43 


3.80 


33.79 


1937 


. 3.02 


2.46 


1.50 


4.13 


3.76 6.62 


.92 2.61 


1.11 


2.68 


1.09 


1.75 


31.65 


1938 


. 3.35 


2.08 


2.82 


2.38 


3.03 5.17 


8.56 9.38 


12.13 


1.11 


2.65 


1.26 


53.92 


1939 


.1.87 


2.41 


2.11 


2.91 


3.10 4.63 


2.84 2.73 


1.07 


1.36 


.48 


.45 


25.96 


1940 


. 1.24 


1.44 


.86 


1.96 


2.08 6.49 


6.23 7.10 


.40 


2.69 


1.95 


1.25 


33.69 


1941... 


. 3.34 


1.55 


1.83 


2.88 


3.11 4.22 


4.92 2.99 


7.39 


3.84 


1.23 


1.78 


39.08 


1942 


.1.14 


.34 


1.28 


.90 


5.04 3.67 


3.79 5.16 


10.86 


2.15 


3.05 


3.30 


40.68 


1943 


. 2.12 


.69 


2.34 


3.86 


4.56 4.72 


6.13 7.76 


2.41 


1.66 


2.42 


.48 


39.15 


1944 


.1.18 


1.48 


2.63 


3.44 


2.91 


2.55 2.75 


2.47 


.41 


2.92 


.73 




1945 


. .40 


1.06 


1.68 


3.20 


7.64 3.76 


1.33 4.92 


8.67 


.92 


2.85 


1.14 


37.57 


1946 


. 2.54 


.66 


2.45 


1.14 


2.45 4.63 


1.81 2.02 


2.77 


2.23 


2.95 


1.69 


27.34 


Aver 


.1.80 


1.53 


2.16 


2.71 


3.65 4.08 


3.66 3.65 


3.74 


2.44 


2.11 


1.74 


33 27 


CHICAGO, Cook county 


1871... 


. 4.13 


1.45 


2.66 


3.70 


3.90 5.56 


2.52 2.01 


.74 


1.88 


3.62 


3.44 


35.61 


1872 


. .68 


.84 


3.79 


3.03 


3.24 3.45 


3.09 2.59 


6.43 


.65 


1.06 


.22 


29.07 


1873 


.2.56 


.47 


.89 


6.22 


7.20 1.44 


4.04 1.58 


3.53 


2.43 


1.61 


4.44 


36.41 


1874 


. 3.47 


1.51 


2.15 


2.67 


2.08 3.25 


.58 3.15 


3.76 


2.55 


2.83 


.63 


28.63 


1875 


. .96 


1.99 


1.43 


2.32 


3.64 5.17 


7.18 3.29 


4.39 


4.32 


.75 


2.62 


38.06 


1876 


. 3.22 


3.90 


4.04 


2.07 


1.85 5.96 


3.11 3.66 


3.74 


1.20 


3.25 


.48 


36.48 


1877 


. 1.91 


.06 


5.37 


2.42 


1.81 6.04 


2.98 3.06 


2.02 


6.51 


6.08 


2.75 


41.01 


1878 


. 1.31 


2.12 


4.39 


5.57 


5.22 3.02 


6.09 3.66 


1.99 


5.17 


.83 


2.58 


41.95 


1879 


. .54 


1.47 


2.37 


1.93 


3.89 3.18 


5.58 .45 


1.18 


2.72 


4.93 


2.47 


30.71 


1880 


. 3.53 


2.91 


2.25 


5.20 


4.97 3.50 


3.07 4.47 


2.25 


3.19 


.87 


1.11 


37.32 


1881 


. .87 


5.98 


2.99 


1.84 


1,85 5.93 


4.31 .54 


4.34 


6.89 


5.97 


2.67 


44.18 


1882 


.1.55 


2.24 


3.43 


6.72 


5.52 5.71 


3.43 4.96 


.91 


3.40 


1.48 


1.99 


41.34 


1883 


. 1.74 


4.74 


.42 


3.72 


7.32 5.61 


5.53 1.21 


1.36 


7.36 


5.26 


1.59 


45.86 


1884 


. 1.39 


3.27 


5.16 


3.05 


1.53 2.11 


3.71 2.50 


2.29 


3.59 


1.80 


4.21 


34.61 


1885 


. 3.18 


2.01 


.57 


4.00 


3.17 5.20 


2.44 11.28 


2.97 


3.87 


2.33 


3.35 


44.37 


1886... 


. 3.56 


1.51 


1.79 


1.29 


1.00 .94 


1.53 3.38 


6.93 


1.42 


1.66 


1.76 


26.77 


1887 


. 3.13 


5.10 


.89 


.46 


1.38 1.63 


1.05 3.35 


4.03 


2.03 


2.41 


3.67 


29.13 


1888 


.1.56 


1.51 


2.99 


2.13 


6.22 1.66 


3.93 2.10 


.98 


2.95 


2.89 


1.94 


30.86 


1889 


.1.64 


1.31 


1.43 


2.35 


5.38 2.93 


9.56 .39 


2.75 


1.82 


3.49 


1.90 


34.95 


1890 


. 2.98 


2.42 


2.10 


3.23 


5.13 3.25 


2.57 2.58 


1.39 


4.20 


1.59 


1.25 


32.69 


1891 . . . 


. 1.99 


1.95 


2.13 


3.14 


2.09 2.42 


2.47 4.52 


.32 


.36 


3.83 


1.32 


26.54 


1892 


. 1.99 


1.57 


2.21 


2.17 


6.77 10.58 


2.23 1.85 


1.34 


1.54 


2.68 


1.63 


36.56 


1893 


. 2.08 


2.44 


1.69 


4.16 


1.93 3.59 


3.08 .18 


1.98 


1.75 


2.45 


2.14 


27.47 


1894 


. 1.55 


2.13 


2.66 


2.65 


3.35 1.96 


.60 .60 


8.28 


.84 


1.18 


1.66 


27.46 


1895 


. 2.15 


1.60 


1.32 


.86 


1.99 1.79 


2.42 6.49 


.89 


.51 


5.60 


6.76 


32.38 


1896... 


. 1.12 


3.48 


1.26 


2.79 


4.16 2.82 


3.61 3.52 


6.70 


1.36 


2.16 


.16 


33.14 


1897 


. 4.53 


2.22 


3.56 


2.23 


.84 3.60 


1.47 1.70 


.84 


.18 


3.06 


1.62 


25.85 


1898 


. 3.54 


2.59 


4.60 


.76 


2.23 5.30 


1.94 3.03 


3.16 


3.26 


2.25 


1.11 


33.77 


1899 


. .58 


1.60 


2.11 


.14 


4.35 2.71 


6.66 .91 


2.39 


2.09 


1.14 


1.81 


26.49 


1900 


1.21 


3.52 


1.58 


1.02 


3.59 2.06 


4.64 4.24 


1.56 


1.35 


3.30 


.58 


28.65 



1949] CLIMATE OF ILLINOIS: APPENDIX B 205 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHICAGO, Cook county, 


concluded 


1901... 


.1.15 


2.05 


3.38 


.33 


2.18 2.42 4.25 


2.00 


2.92 


1.29 


.85 


1.70 


24.52 


1902 


. .66 


1.53 


4.16 


2.26 


5.08 6.45 5.78 


1.44 


4.83 


1.45 


2.03 


1.90 


37.57 


1903 


. 1.09 


3.03 


1.67 


3.77 


.93 1.62 4.78 


3.49 


4.00 


1.09 


.34 


2.28 


28.09 


1904 


. 2.25 


1.71 


4.57 


3.01 


1.54 .55 2.76 


4.00 


2.65 


1.58 


.31 


1.21 


26.14 


1905 


. 1.33 


1.95 


2.43 


3.03 


5.14 3.27 5.02 


4.46 


4.18 


1.82 


2.05 


.68 


35.36 


1906 


. 1.67 


2.37 


1.61 


1.86 


2.09 1.87 4.84 


1.43 


5.54 


2.05 


3.08 


2.46 


30.87 


1907 


. 4.21 


1.00 


2.94 


2.37 


3.50 3.64 3.15 


4.22 


4.49 


.93 


1.92 


2.73 


35.10 


1908 


. 2.05 


3.72 


3.48 


2.81 


6.74 1.48 1.45 


6.35 


2.09 


.81 


2.67 


1.18 


34.83 


1909 


. 1.96 


3.84 


1.63 


7.73 


2.18 5.09 1.77 


6.20 


3.60 


1.20 


3.84 


4.18 


43.22 


1910 


. 3.07 


.89 


.29 


3.84 


4.67 .91 1.79 


3.08 


3.90 


1.79 


1.31 


1.32 


26.86 


1911... 


.1.17 


2.27 


1.45 


3.03 


3.37 2.54 2.65 


3.72 


4.03 


3.79 


3.27 


2.54 


33.83 


1912 


. .84 


1.57 


2.20 


2.55 


3.97 1.78 3.86 


3.59 


3.26 


3.52 


1.45 


1.08 


29.67 


1913 


. 1.33 


1.97 


3.44 


1.91 


4.38 1.08 3.30 


4.06 


1.49 


2.23 


1.47 


.45 


27.11 


1914 


. 3.01 


.93 


1.87 


1.07 


5.22 3.53 2.11 


3.76 


1.56 


2.89 


.33 


2.33 


28.61 


1915 


. 1.99 


1.92 


.60 


1.02 


7.04 3.60 5.57 


4.33 


3.53 


.40 


2.03 


1.31 


33.34 


1916... 


. 4.84 


.87 


2.48 


1.60 


2.93 7.25 2.22 


1.05 


2.24 


3.88 


2.11 


2.58 


34.05 


1917 


.1.55 


.67 


2.11 


2.58 


3.41 2.87 2.68 


1.24 


2.15 


3.96 


.56 


.88 


24.66 


1918 


. 4.12 


2.81 


2.05 


3.41 


4.57 1.69 2.66 


1 W 


1.84 


2.94 


2.65 


3.24 


33.25 


1919 


. .20 


2.78 


4.32 


3.16 


3.84 3.16 1.59 


1.10 


3.85 


6.41 


2.38 


.70 


33.49 


1920 


. 1.11 


.13 


4.57 


4.71 


1.81 3.94 1.61 


3.16 


3.35 


1.57 


.92 


3.33 


30.21 


1921... 


.97 


.38 


4.00 


4.47 


.80 1.57 1.87 


4.92 


5.72 


3.26 


3.51 


4.63 


36.10 


1922 


.1.16 


.74 


5.58 


3.70 


3.18 .12 4.00 


1.45 


4.37 


3.40 


2.66 


1.21 


31.57 


1923 


. .92 


1.05 


3.05 


1.38 


3.46 1.70 2.67 


7.76 


2.50 


4.57 


1.46 


1.96 


32.48 


1924 


. 1.32 


1.68 


3.70 


.84 


2.30 6.60 3.66 


8.12 


3.14 


.84 


.86 


1.90 


34.96 


1925 


. .68 


1.62 


1.51 


3.15 


1.59 4.53 2.47 


2.09 


3.19 


3.72 


2.57 


1.21 


28.33 


1926 


. 1.35 


2.92 


3.14 


1.96 


2.73 7.62 3.21 


.99 


5.03 


1.67 


3.97 


.87 


35.46 


1927 


.1.15 


.75 


2.69 


6.01 


4.40 2.55 2.94 


3.17 


6.72 


1.77 


4.66 


2.74 


39.55 


1928 


. .73 


1.57 


1.50 


2.34 


1.59 6.97 2.95 


5.03 


1.87 


2.74 


4.00 


2.63 


33.92 


1929 


.3.93 


.54 


5.23 


4.79 


2.29 4.96 2.18 


3.49 


3.03 


3.06 


1.47 


1.84 


36.81 


1930 


. 2.23 


1.42 


2.82 


2.30 


2.16 2.49 2.63 


1.17 


1.29 


2.81 


1.75 


.27 


23.34 


1931... 


.57 


.76 


3.33 


1.75 


5.08 4.78 2.68 


5.67 


4.14 


2.62 


4.63 


2.28 


39.29 


1932 


. 2.20 


1.21 


3.10 


.58 


2.89 4.79 4.67 


3.08 


1.12 


3.52 


2.24 


2.46 


31.86 


1933 


. 2.32 


1.22 


4.05 


2.61 


5.03 3.44 2.70 


1.14 


3.78 


3.64 


.68 


1.39 


32.00 


1934 


. .84 


.52 


1.21 


1.32 


.67 2.24 .42 


3.41 


4.03 


2.32 


3.87 


1.93 


22.78 


1935 


. 2.34 


1.59 


3.48 


1.77 


7.09 5.03 3.05 


3.56 


3.28 


1.68 


3.62 


1.24 


37.73 


1936 


. 1.64 


1.33 


1.00 


2.54 


2.08 1.03 .22 


4.29 


8.97 


3.00 


.90 


2.58 


29.58 


1937 


. 2.29 


.63 


1.20 


4.61 


1.64 5.02 1.41 


2.68 


1.89 


3.09 


1.25 


1.27 


26.98 


1938 


. 2.02 


2.11 


3.51 


2.20 


3.98 6.78 3.90 


2.12 


5.29 


.77 


.95 


1.18 


34.81 


1939 


. 2.22 


1.98 


2.96 


3.22 


3.66 5.13 2.74 


1.47 


.49 


1.79 


.95 


.90 


27.51 


1940 


. 1.25 


.89 


2.41 


3.17 


5.16 1.31 1.29 


3.95 


.31 


3.26 


2.36 


1.38 


26.74 


1941 


. 2.26 


1.01 


2.60 


2.63 


3.42 3.43 1.10 


2.16 


5.20 


8.44 


2.07 


.97 


35.29 


1942 


. 1.39 


3.03 


2.68 


1.59 


4.50 1.87 3.62 


4.86 


4.82 


1.81 


3.64 


2.74 


36.55 


1943 


. 1.94 


1.37 


2.28 


2.88 


7.18 1.53 3.93 


5.17 


1.12 


2.06 


1.24 


.28 


30.98 


1944 


. .89 


1.76 


4.04 


3.07 


4.34 5.07 1.50 


2.27 


1.37 


.45 


1.24 


1.01 


27.01 


1945 


. .83 


1.37 


2.26 


4.26 


7.83 3.77 .51 


2.69 


6.17 


1.33 


2.70 


1.53 


35.25 


1946 


.1.55 


.81 


2.90 


1.04 


3.61 3.36 1.22 


2.09 


1.96 


2.63 


2.94 


2.64 


26.75 


Aver 


. 1.91 


1.87 


2.65 


2.76 


3.62 3.54 3.06 


3.16 


3.18 


2.60 


2.37 


1.93 


3? 65 


DAVENPORT, Scott county, 


Iowa 










1871... 










3.68 2.30 


4.85 


.30 


3.19 


3.33 


1.61 




1872 


.13 


.10 


1.82 


5.06 


4.44 4.51 3.80 


8.91 


5.30 


.61 


1.86 


.67 


37.21 


1873 


. 3.56 


.77 


1.43 


3.96 


6.37 2.16 2.37 


.51 


1.00 


1.48 


.63 


3.84 


28.08 


1874 


. 4.34 


.74 


1.34 


2.64 


3.45 5.37 3.18 


3.68 


7.86 


1.30 


2.47 


.50 


36.87 


1875 


. .38 


1.09 


.88 


2.30 


2.01 4.91 9.36 


1.73 


4.05 


1.63 


.57 


3.08 


31.99 


1876... 


. 3.47 


3.63 


4.35 


5.39 


6.70 4.25 4.82 


4.27 


5.50 


1.54 


2.54 


.36 


46.82 


1877 


. 1.41 


.07 


3.91 


3.28 


2.82 5.80 3.42 


3.21 


1.45 


4.88 


2.53 


2.32 


35.10 


1878 


. .36 


1.09 


2.21 


2.89 


5.14 4.36 2.19 


5.07 


1.82 


4.21 


.90 


.97 


31.21 


1879 


. .79 


1.09 


1.80 


1.54 


5.83 4.57 5.87 


4.33 


1.43 


.92 


4.70 


1.02 


33.89 


1880 


. 3.13 


1.72 


2.68 


4.50 


5.09 7.21 4.31 


5.90 


4.87 


.94 


1.23 


1.15 


42.73 


1881 


.1.34 


4.14 


3.33 


1.11 


1.34 7.94 .91 


.83 


5.59 


6.85 


2.19 


1.71 


37.28 


1882 


, . .90 


.62 


2.90 


3.15 


5.49 8.43 4.41 


2.29 


1.39 


3.75 


1.49 


1.78 


36.60 


1883 


. 1.16 


4.42 


.73 


3.33 


5.46 4.38 3.66 


1.02 


.73 


5.13 


3.58 


.99 


34.59 


1884 


. .75 


.98 


3.27 


.77 


3.79 3.07 4.51 


3.84 


4.79 


7.17 


1.49 


3.68 


38.11 


1885 


2.10 


1.20 


.17 


2.47 


1.94 2.08 1.66 


12.68 


4.19 


2.71 


1.20 


1.95 


34.35 



206 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 

Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual 
DAVENPORT, Scott county, Iowa, concluded 



1886 . 


. .2.22 


1.52 


3.08 


1.84 


3 73 


49 


43 


2 67 


2 43 


3 47 


74 


53 


23 15 


1887 


... 1.43 


4.87 


.77 


1.17 


1.76 


1.66 


3 09 


3 23 


5 45 


3 41 


1 13 


3 26 


31 23' 


1888 


... 1.54 


1.17 


2.70 


1.57 


9.23 


3.86 


7.31 


2 79 


1 38 


2 81 


3 54 


2 59 


40 49 


1889 


. .. .95 


1.44 


1.74 


3.89 


6.34 


5.59 


8.25 


1.11 


3.27 


1 26 


2 17 


1 60 


37 61 


1890 ... 


. . . 2.49 


1.10 


2.34 


.86 


4.33 


4.51 


85 


1 66 


2 34 


3 63 


1 37 


62 


26 10 


1891... 


.. 2.38 


.89 


1.68 


3.30 


2.74 


3.56 


3.29 


5.54 


1.50 


1 37 


3 56 


1 64 


31 45 


1892 


. .. 1.60 


1.38 


3.06 


5.41 


8.84 


10.79 


4.16 


1.53 


2.09 


.55 


2 01 


2 73 


44 15 


1893 


. . . 1 . 14 


1.69 


2.25 


4.50 


2.67 


3 82 


1.75 


1 12 


3 36 


80 


2 56 


1 67 


27 33 


1894 


. .. 1.33 


1.48 


1.88 


1.37 


1.93 


2.16 


.44 


2.02 


3 02 


1 02 


1 26 


61 


18 52 


1895 


. . . 1.27 


.38 


1.57 


.32 


2.28 


1.22 


5.16 


4.79 


4 30 


81 


2 50 


2 54 


27 14 


1896... 


.89 


1.45 


.84 


3.41 


4.03 


2.28 


5 68 


3 12 


3 98 


1 67 


68 


65 


28 68 


1897 


. .. 3.58 


1.57 


2.82 


3.69 


1.91 


1.37 


3.21 


.68 


1 52 


35 


1 68 


1 53 


23 91 


1898 


. .. 3.68 


1.86 


4.85 


3.01 


6.73 


3.53 


1.85 


4.96 


3.14 


3.38 


1 37 


59 


38 95 


1899 . . . 


. . . .31 


1.91 


1.94 


2.94 


7.35 


4 02 


2 84 


4 47 


82 


1 46 


90 


2 68 


31 64 


1900 


. .. 1.27 


2.45 


2.92 


2.10 


4.68 


1.01 


3.49 


4.90 


3 66 


2 00 


1 48 


21 


30 17 


1901 . 


. 1.10 


1.59 


2.57 


88 


1.37 


3 02 


1 48 


46 


2 29 


45 


79 


1 33 


17 33 


1902 


. .. .60 


.96 


1.76 


1.40 


4.57 


7 55 


6 38 


7 25 


3 20 


2 81 


1 95 


1 88 


40 31 


1903 


. .. .79 


1.67 


2.06 


3.42 


5.52 


2.28 


4.47 


4.68 


7.09 


2 27 


70 


78 


35 73 


1904 


. . . 2.20 


.72 


2.70 


2.05 


2.64 


1.44 


3.34 


3.60 


3.98 


1.15 


.18 


2 21 


26 21 


1905 


. . . .63 


1.99 


2.21 


3.45 


3 12 


7 68 


99 


1 93 


3 48 


2 73 


2 01 


1 32 


31 54 


1906... 


. . 2.14 


2.21 


2.20 


1.92 


2.60 


2.69 


2.26 


3.50 


2 47 


1 67 


2 66 


1 61 


27 93 


1907 


. .. 3.55 


.22 


1.79 


1.90 


4.33 


2.07 


7.13 


6.48 


3.55 


.70 


1 08 


49 


33 29 


1908 


. . . .69 


2.37 


2.24 


2.22 


5.13 


4 57 


3 30 


6 23 


1 12 


87 


2 46 


40 


31 60 


1909 


. .. 1.72 


2.34 


1.60 


6.02 


3.23 


2.80 


4.68 


2.34 


1 50 


2 37 


3 92 


3 12 


35 64 


1910 


. .. 1.69 


.59 


.39 


3.69 


3.42 


.91 


2.86 


4.31 


2.40 


.61 


22 


85 


21 94 


1911... 


. 1.41 


4.10 


1.08 


3.63 


2.25 


2 00 


5 12 


4 92 


5 13 


1 57 


3 84 


1 52 


36 57 


1912 


. . . .18 


1.21 


2.34 


2.76 


2.75 


3.19 


2.79 


2.77 


2 28 


4 04 


98 


56 


25 85 


1913 


. . . 1.04 


1.57 


1 99 


2.19 


4 89 


6 09 


18 


2 06 


1 80 


3 01 


1 26 


54 


26 62 


1914 


. .. .87 


.76 


2.96 


.89 


1.40 


8.84 


44 


2 01 


6 27 


2 15 


24 


1 67 


28 50 


1915 


. . . 2.11 


2.42 


.83 


.62 


6.07 


3.47 


8.05 


1 77 


5 75 


36 


4 07 


1 13 


36 65 


1916... 


. . 4 . 63 


.37 


2.47 


2.45 


3 52 


3 19 


46 


1 25 


2 82 


3 52 


1 45 


1 44 


27 57 


1917 


. .. .97 


.22 


1.76 


4.40 


3.15 


4 85 


2 72 


70 


6 27 


4 00 


26 


68 


29 98 


1918 


. .1.56 


1 17 


66 


2 32 


7 15 


5 03 


4 39 


3 38 


2 19 


2 45 


1 89 


1 89 


34 08 


1919 . . . 


. . . .07 


2.20 


3.98 


3 60 


4 85 


3 90 


2 56 


3 58 


7 23 


5 32 


2 70 


58 


40 57 


1920 


. . . .44 


.19 


4.45 


5.04 


2.83 


2 54 


2 19 


2 67 


1 85 


2 40 


1 69 


1 19 


27 48 


1921 . . 


.47 


31 


4 23 


4 77 


2 69 


3 64 


2 21 


6 62 


7 92 


2 38 


77 


3 72 


39 73 


1922 ... 


. . . .98 


1.34 


3.40 


2.86 


3 87 


1 22 


5 66 


48 


1 91 


42 


3 12 


60 


25 86 


1923 


. .. .97 


.64 


5.05 


.59 


3.60 


6 03 


1 76 


1 61 


4 53 


1 18 


1 02 


1 52 


28 50 


1924 


, . . 1 . 27 


1.46 


2.71 


1.11 


.93 


9.01 


3.76 


8.03 


2 23 


86 


60 


2 36 


34 33 


1925 


. . .40 


1.94 


1.13 


4.48 


98 


7 56 


3 34 


3 75 


8.16 


3 01 


1 10 


1 64 


37 49 


1926... 


.94 


1.62 


2.33 


1.84 


2.10 


5.13 


2.98 


4.15 


8 80 


2 38 


3 88 


65 


36 80 


1927 ... 


, .. .77 


2.36 


3.13 


4 64 


5 63 


2 83 


1 59 


3 28 


5 73 


5 25 


2 38 


1 63 


39 22 


1928 


. .. .34 


1.61 


2.61 


3.86 


1.08 


4 55 


4 57 


6 57 


1 93 


3 44 


4 29 


1 64 


36 49 


1929 


3 01 


.81 


2 60 


5 49 


1 23 


4 30 


5 64 


2 69 


3 13 


3 77 


1 51 


53 


34 71 


1930 


. . . 2.05 


2.38 


1.02 


2.96 


2 13 


9 14 


1 94 


2 42 


39 


2 89 


1 72 


97 


30 01 


1931 . 


.58 


.14 


2 87 


2 71 


3 21 


2 21 


2 05 


3 16 


3 78 


3 01 


4 99 


2 68 


31 39 


1932 


. .. 1.05 


1.00 


2 58 


1 51 


3 18 


7 05 


3 33 


7 43 


77 


2 99 


1 28 


2 32 


34 49 


1933 


. 1.87 


.64 


2.86 


2.56 


6.31 


3 12 


1 56 


2 51 


3 04 


1 72 


28 


1 84 


28 31 


1934 . . . 


. .. .77 


.78 


1 50 


1 06 


81 


4 56 


4 50 


5 41 


7 91 


1 77 


6 48 


1 30 


36 85 


1935 


. . 1.57 


1.27 


3.49 


2 24 


6 55 


5 12 


2 25 


1 51 


4 05 


1 96 


4 66 


91 


35 58 


1936... 


. . . 1.44 


1.76 


1.25 


1 80 


1 78 


2 32 


14 


3 85 


9 29 


2 09 


1 64 


2 72 


30 08 


1937 


. . . 3 . 52 


1.61 


2.06 


3 86 


3 91 


2 56 


4 99 


1 91 


2 06 


2 51 


63 


1 34 


30 96 


1938 


. . . 2 70 


1 99 


3 09 


3 23 


7 72 


6 43 


4 83 


2 98 


5 74 


1 59 


2 71 


74 


43 75 


1939 


, . . 1 . 40 


2.06 


2 92 


2 61 


2 65 


3 76 


3 86 


5 60 


70 


1 91 


94 


09 


28 50 


1940 


. . . 1 . 55 


.95 


1.71 


2.98 


1 46 


2 65 


2 05 


4 80 


1 69 


2 10 


1 48 


1 78 


25 20 


1941... 


.. 2.78 


.45 


1.40 


4 49 


2 55 


7 08 


1 54 


69 


5 19 


8 10 


1 36 


1 31 


36 94 


1942 


. . .93 


.96 


1.42 


1.15 


3 65 


3 88 


6 15 


2 66 


4 22 


79 


3 20 


3 87 


32 88 


1943 


. . 1 . 62 


1.12 


1 97 


6 21 


5 76 


2 91 


1 93 


4 36 


1 59 


2 29 


1 85 


55 


32 16 


1944 


.. .81 


1.88 


5.01 


5 56 


6 02 


7 27 


1 93 


2 23 


2 63 


1 41 


2 54 


1 64 


38 93 


1945... . 


. .41 


1 01 


3 41 


3 86 


5 26 


2 90 


2 02 


4 01 


5 69 


1 31 


1 93 


2 03 


33 84 


1946... 


.. 2.70 


.47 


4.89 


.93 


5.08 


7.27 


1.17 


3.80 


6.37 


1.33 


2.81 


1.50 


38.32 



Aver 1.54 1.44 2.37 2.88 3.91 4.28 3.32 3.55 3.61 2.38 1.99 1.53 32.80 



1949] CLIMATE OF ILLINOIS: APPENDIX B 207 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DIXON, Lee county 


1892 


. 2.22 


1.69 


2.24 


3.27 8.93 


7.61 3.84 


1.94 


2.56 


1.07 


1.67 


2.52 


39.56 


1893 


. 2.07 


1.94 


2.83 


4.02 2.99 


4.42 3.74 


.39 


3.22 


1.05 


2.13 


1.69 


30.49 


1894 


. 2.15 


1.97 


3.12 


2.04 4.28 


1.91 .15 




3.20 


.99 


1.42 


.53 




1895 


. 1.22 


.43 


.83 


1.17 4.46 


1.62 4.59 


2.83 


1.81 


.82 


2.50 


2.00 


24.28 


1896 


.65 


.74 


.81 


3.62 5.87 


3.18 4.81 


3.75 


4.66 


.89 


1.70 


.44 


31.12 


1897 


. 3.00 


1.25 


4.25 


3.43 .96 


5.27 1.97 


.56 


2.00 


.48 


1.90 


1.17 


26.24 


1898 


. 3.27 


2.26 


4.74 


3.29 4.00 


2.49 1.55 


6.39 


3.01 


2.56 


1.19 


.78 


35.53 


1899 


. .30 


1.25 


1.67 


1.56 6.76 


1.91 2.82 


1.83 


1.48 


3.48 


.56 


1.81 


25.43 


1900 


. 2.06 


1.86 


2.86 


1.32 5.25 


1.32 4.36 


6.18 


4.39 


3.41 


2.10 


.34 


35.45 


1901 


. 1.09 


.54 


2.98 


.34 2.28 


2.48 8.98 


.53 


2.36 


.90 


1.00 


1.13 


24.61 


1902 


. .43 


1.05 


1.81 


1.69 8.00 


9.75 8.47 


2.62 


4.63 


3.90 


2.37 


2.13 


46.85 


1903 


. 2.76 


.90 


3.07 


4.20 4.35 


1.46 4.91 


5.64 


6.13 


3.21 


.73 


1.16 


38.52 


1904 


. 2.23 




3.07 


2.29 3.26 


2.27 7.58 


3.45 


5.46 


.86 


.03 


2.17 




1905 


. .32 


1.24 


3.35 


3.66 6.15 


3.35 1.97 


4.15 


1.23 


3.15 


1.83 


1.12 


31.52 


1906... 


. 2.07 


2.46 


2.70 


2.70 7.24 


6.33 5.12 


2.09 


4.70 


1.84 


2.19 


1.52 


40.96 


1907 


. 3.43 


.22 


2.08 


2.11 4.89 


3.19 8.76 


5.33 


4.95 


1.71 


1.23 


.59 


38.49 


1908 


. .72 


2.82 


3.38 


3.29 5.16 


2.24 4.18 


5.68 


.84 


.90 


2.45 


.84 


32.50 


1909 


. 2.78 


1.89 


1.16 


6.40 4.34 


5.72 1.51 


1.13 


2.81 


2.42 


2.59 






1910 




.65 


.20 


3 . 43 4 . 22 


.45 .70 


3.14 


4.76 


.54 


.85 


.89 




1911 


.73 


3.52 


.67 


3.73 2.69 


3.64 3.38 


6.62 


6.77 


2.08 


5.47 


1.47 


40.77 


1912 


. .50 


1.46 


1.72 


3.07 2.84 


1.63 3.34 


5.06 


3.57 


5.13 


1.38 


1.34 


31.04 


1913 


. .94 


1.71 


2.64 


2.55 5.27 


3.15 1.47 


2.57 


2.57 


3.22 


.76 


1.17 


28.02 


1914 


. 1.07 


.93 


3.35 


1.42 4.78 


5.97 2.60 


1.15 


6.75 


3.02 


.42 


1.89 


33.35 


1915 


. 1.11 


2.30 


1.42 


.35 6.58 


4.68 10.34 


2.28 


5.52 


.30 


2.52 


1.25 


38.65 


1916 


. 3.89 


.51 


2.30 


1.28 3.13 


6.37 .20 


4.42 


3.04 


4.63 


1.43 


1.73 


32.93 


1917 


. 1.08 


.45 


1.98 


2.67 5.03 


5.38 1.15 


.98 


4.21 


5.72 


.12 


.38 


29.15 


1918 


. 2.30 


1.84 


.75 


2.77 4.57 


2.44 4.98 


5.06 


2.70 


2.64 


1.53 


1.98 


33.56 


1919 


. .26 


2.70 


4.28 


4.10 5.34 


3.39 1.77 


1.71 


3.81 


5.38 


3.07 


.51 


36.32 


1920 


. .75 


.19 


5.57 


3.61 2.44 


2.39 1.13 


2.22 


.87 


2.23 


1.62 


1.54 


24.56 


1921 


.22 


.32 


4.64 


4.82 1.48 


3.89 1.38 


6.19 


6.72 


2.83 


1.38 


3.19 


37.06 


1922 


. 1.08 


1.38 


2.89 


3.66 3.28 


.54 7.87 


.70 


2.59 


.47 


2.28 






1923 




.40 


3.92 


1 . 22 1 . 75 


2.70 3.40 


3.12 


2.10 


2.84 


1.06 


2 38 




1924 


. 1.32 


.80 


2.91 


3.53 1.34 


7.59 3.27 


8.51 


2.60 


.65 


.73 


1.19 


34.44 


1925 


. .42 


2.42 


1.51 


2.90 1.09 


6.35 3.27 


1.73 


6.35 


3.77 


1.50 


1.45 


32.76 


1926... 


.79 


2.93 


2.12 


2.15 1.65 


4.18 6.00 


2.73 


6.99 


1.78 


3.86 


.80 


35.98 


1927 


. .99 


1.45 


2.45 


6.67 9.24 


2.20 1.42 


1.02 


5.35 


5.33 


3.49 


1.82 


41.43 


1928 


. .68 


1.10 


1.80 


2.55 2.19 


7.46 6.70 


6.24 


1.93 


3.37 


5.59 


2.24 


41.85 


1929 


. 3.65 


.46 


2.03 


4.99 3.05 


4.07 3.51 


2.63 


3.63 


3.57 


1.49 


.49 


33.57 


1930 


. 1.90 


1.44 


1.17 


4.59 2.47 


4.50 .69 


2.87 


4.55 


3.30 


1.28 


.60 


29.36 


1931... 


.60 


.19 


2.01 


1.90 3.88 


5.10 1.79 


2.64 


5.93 


7.12 


4.21 


2.79 


38.16 


1932 


. 1.58 


.93 


3.34 


.86 3.30 


4.37 3.22 


3.77 


1.77 


3.71 


.73 


2.38 


29.96 


1933 


. 2.20 


1.27 


3.34 


3.11 7.33 


1.77 2.75 


2.63 


1.82 


1.64 


.26 


.99 


29.11 


1934 


. .90 


.34 


.85 


1.26 .48 


5.21 6.04 


4.12 


5.24 


.85 


6.14 


1.64 


33.07 


1935 


. 2.19 


1.33 


3.04 


2.16 5.84 


7.36 4.94 


5.32 


2.69 


1.11 


7.54 


1.09 


44.61 


1936... 


. 1.39 


1.63 


.49 


1.33 1.83 


3.78 1.38 


4.56 


10.79 


4.37 


2.25 


4.15 


37.95 


1937 


. 3.34 


1.50 


1.08 


3.78 3.33 


7.19 1.62 


2.15 


1.57 


3.16 


1.21 


.85 


30.78 


1938 


. 2.83 


1.37 


3.40 


1.69 4.89 


7.34 6.77 


5.51 


8.79 


.73 


1.75 


1.10 


46.17 


1939 


. 2.10 


1.21 


1.82 


2.98 2.16 


3.66 2.23 


2.51 


1.06 


2.09 


.66 


.38 


22.86 


1940 


. 1.45 


1.19 


1.57 


3.21 1.87 


4.11 1.29 


5.31 


1.10 


2.26 


1.89 


1.69 


26.94 


1941... 


. 2.92 


.95 


1.86 


2.55 4.57 


4.39 2.45 


1.45 


9.18 


8.28 


2.44 


1.40 


42.44 


1942 


. .90 


1.37 


1.98 


.79 4.24 


4.20 3.72 


3.13 


4.46 


2.04 


4.08 


2.95 


33.86 


1943 


. 1.99 


1.12 


2.11 


4.44 5.12 


2.10 2.18 


3.89 


1.40 


1.31 


2.62 


.44 


28.72 


1944 


. 1.05 


2.20 


4.99 


4.10 4.56 


3.02 2.67 


3.06 


1.96 


1.25 


2.60 


1.30 


32.76 


1945 


. 1.04 


.64 


2.17 


4.42 7.57 


4.24 1.12 


3.60 


6.02 


1.01 


2.42 


1.51 


35.76 


1946 


. 1.59 


.80 


3.34 


1.16 5.24 


3.85 3.16 


4.80 


3.80 


1.81 


3.15 


2.03 


34.73 


Aver 


1.59 


1.32 


2.45 


2.84 4.18 


4.02 3.55 


3.41 


3.90 


2.53 


2.10 


1.45 


33.34 


DUBUQUE, 


Dubuque county, Iowa 


1851... 


. 1.08 


2.05 


.73 


1.76 11.04 


11.38 4.92 


6.53 


5.33 


1.44 


1.82 


1.09 


49.17 


1852 


. .93 


.66 


5.02 


3.19 2.87 


6.02 2.07 


1.25 


2.66 


3.51 


2.02 


1.57 


31.77 


1853 




1.02 


.54 


4.61 


5.03 5.91 


2.23 


2.08 


.06 


3.01 


.34 




1854 


. 2.05 


1.19 


1.11 


.49 5.49 


5.72 4.06 


2.02 


1.79 


3.24 


.52 


.09 


27.77 


1855 


1.90 


.99 


1.30 


.64 2.02 


4.38 3.07 


1.91 


6.06 


2.50 


2.71 


1.81 


29.29 



208 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. 


May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DUBUQUE, 


Dubuque county, Iowa 


, continued 


1856 


. .44 


.52 


1.10 2.17 


3.40 


1.80 














1857 








1.73 


1.72 


5.30 2.51 


2.70 


2.50 


2 70 


1 30 




1858 


. 1.91 


.78 


1.84 4.37 


8.23 


4.86 


8.69 1.37 


5.57 


5.63 


3.01 


2.07 


48.33 


1859 


. .89 


1.52 


4.99 4.16 


2.96 


4.61 


3.42 1.06 


2.83 


.60 


1.92 


.75 


29.71 


1860 


. .73 


1.37 


.45 .81 


3.05 


3.24 


1.36 3.68 


5.86 


2.46 


1.28 


2.55 


26.84 


1861... 


. 3.45 


6.38 


1.09 2.32 


2.45 


2.29 


3.07 .55 


6.42 


6.19 


2.30 


1.96 


38.47 


1862 


. 3.37 


1.19 


4.14 2.41 


2.19 


.74 


4.72 4.46 


4.25 


4.19 


1.14 


1.95 


34.75 


1863 


. 2.35 


1.66 


2.81 .25 


1.83 


1.83 


3.93 3.27 


2.16 


4.17 


4.80 


3.56 


32.62 


1864 


. 2.62 


1.74 


1 . 34 1.16 


2.50 


3.69 


2.02 1.35 


2.29 


2.81 


2.73 


1.82 


26.07 


1865 


. .24 


2.19 


3.34 3.92 


1.19 


8.78 


2.98 3.99 


4.17 


3.77 


.20 


.84 


35.61 


1866 


. 3.29 


1.28 


1.56 2.35 


1.91 


4.33 


5.04 8.26 


3.55 


2.49 


.99 


1.20 


36.25 


1867 


. 2.63 


4.45 


2.22 1.32 


3.10 


6.80 


4.86 2.28 


3.58 


1.32 


1.38 


1.00 


34.94 


1868 


. .48 


1.03 


3.83 1.99 


3.53 


6.03 


3.67 2.35 


5.06 


1.31 


1.88 


2.18 


33.34 


1869 


. 3.45 


2.24 


.88 2 . 75 


4.40 


4.68 


3.54 7.76 


3.47 


1.50 


1.69 


2.27 


38.63 


1870 


. 2.22 


1.36 


3.95 .39 


3.71 


.45 


1.83 4.30 


3.98 


1.22 


1.01 


.68 


25.10 


1871 


. 2.62 


1.55 


3.32 2.28 


1.87 


4.47 


1.29 6.40 


.01 


4.09 


2.13 


3.18 


33.21 


1872 
























1873 












1.27 5.88 


1.53 


2.07 


.77 


2.07 




1874 


. 2.45 


.49 


1.28 1.54 


1.08 


3.29 


3.24 2.13 


7.68 


2.18 


4.79 


.65 


30.80 


1875 


. 1.00 


2.12 


1.45 2.71 


3.62 


4.75 


5.39 1.07 


7.11 


2.71 


.48 


2.71 


35.12 


1876 


. 3.20 


1.53 


4.00 3.63 


5.96 


7.88 


8.15 5.92 


5.90 


1.10 


2.49 


.52 


50.28 


1877 


. .96 


.26 


4.53 3.74 


3.84 


6.75 


2.90 3.96 


.67 


5.35 


3.31 


2.70 


38.97 


1878 


. .49 


1.93 


2.44 4.34 


4.61 


4.35 


6.71 1.72 


6.94 


2.85 


.76 


1.12 


38.26 


1879 


. .44 


1.00 


1.20 2.02 


2.94 


4.99 


6.78 2.43 


2.98 


.93 


5.41 


1.28 


32.40 


1880 


. 1.95 


1.01 


2.55 3.51 


3.72 


6.02 


3.55 7.15 


6.84 


.66 


2.11 


1.25 


40.32 


1881... 


. 1.87 


3.75 


3.78 1.30 


2.20 


7.56 


10.53 2.46 


10.26 


6.70 


3.19 


1.55 


55.15 


1882 


. .84 


.59 


1.49 4.47 


4.16 


6.29 


1.48 2.29 


2.60 


5.29 


1.55 


1.79 


32.84 


1883 


.1.59 


2.60 


.32 1.93 


7.13 


5.34 


7.90 2.70 


2.09 


4.44 


1.65 


1.88 


39.57 


1884 


. .99 


2.19 


3.85 2.77 


4.88 


4.89 


5.30 4.25 


4.07 


4.16 


1.43 


4.08 


42.86 


1885 


. 1.80 


.72 


.41 3.69 


2.62 


6.16 


6.35 8.02 


4.58 


2.32 


.64 


3.14 


40.45 


1886... 


. 3.17 


1.36 


4.32 2.12 


4.17 


.71 


.89 .67 


3.10 


4.08 


1.89 


1.03 


27.51 


1887 


. 3.33 


3.56 


1 . 80 1 . 37 


2.53 


1.32 


2.44 4.40 


7.62 


2.22 


.74 


3.07 


34.40 


1888 


. 1.20 


1.31 


3.44 2.58 


5.84 


5.28 


3.59 1.73 


2.01 


1.62 


2.75 


1.96 


33.31 


1889 


.1.55 


1.34 


.30 3.56 


4.00 


3.87 


4.22 .26 


1.54 


.66 


1.57 


1.38 


24.25 


1890 


. 2.31 


1.25 


1.68 2.94 


5.36 


9.59 


1.21 6.00 


3.72 


6.43 


1.85 


.82 


43.16 


1891 


.1.27 


.98 


2.69 1.63 


2.54 


2.34 


4.59 3.31 


.68 


2.20 


3.24 


2.08 


27.55 


1892 


. 2.34 


1.02 


1.91 4.37 


9.18 


14.16 


5.08 2.51 


3.79 


.44 


1.89 


2.08 


48.77 


1893 


. 1.60 


1.30 


2.52 4.32 


3.06 


5.49 


3.57 .58 


3.31 


1.66 


2.03 


1.33 


30.77 


1894 


. 1.11 


1.22 


3.06 2.27 


1.75 


2.25 


.02 1.32 


2.96 


1.51 


1.53 


.35 


19.35 


1895 


. 1.44 


.66 


.99 .49 


2.63 


1.05 


3.00 1.75 


2.06 


.80 


2.12 


2.75 


19.74 


1896 


.75 


1.93 


.76 7.80 


7.63 


3.11 


7.72 2.05 


5.67 


2.56 


1.60 


.71 


42.29 


1897 


. 2.55 


1.43 


2 . 97 3 . 39 


2.09 


2.36 


4.34 1.51 


3.19 


1.02 


1.23 


2.08 


28.16 


1898 


.2.19 


2.01 


2.78 4.06 


4.47 


4.36 


2.83 4.37 


3.07 


3.86 


1.15 


.33 


35.48 


1899 


. .51 


.67 


1.52 4.24 


5.75 


4.08 


4.12 1.95 


.99 


1.63 


.97 


1.85 


28.28 


1900 


.1.15 


2.13 


1.84 2.39 


4.75 


2.04 


8.00 3.35 


3.34 


2.38 


1.64 


.42 


33.43 


1901... 


. 1.07 


1.07 


2.88 1.01 


3.10 


1.23 


2.31 .25 


3.72 


1.64 


.67 


1.44 


20.39 


1902 


. .74 


1.43 


1.76 1.11 


8.67 


6.97 


6.80 1.57 


3.93 


2.26 


.86 


2.24 


38.34 


1903 


. .17 


1.19 


1.84 3.29 


4.25 


2.16 


7.10 5.27 


3.20 


1.72 


.75 


.85 


31.79 


1904 


. .51 


.73 


2.86 2.05 


3.86 


.74 


1.86 2.58 


2.21 


3.18 


.08 


2.37 


23.03 


1905 


. .95 


1.58 


2.27 3.07 


4.06 


4.33 


1.51 3.07 


1.25 


3.88 


2.64 


1.17 


29.78 


1906... 


. 2.72 


.93 


2.36 1.16 


3.59 


3.36 


1.57 4.44 


1.78 


1.70 


2.95 


2.04 


28.60 


1907 


. 1.72 


.52 


.99 2.48 


2.66 


4.08 


5.15 5.85 


6.01 


.77 


1.29 


.67 


32.19 


1908 


. .70 


1.87 


1.72 2.50 


5.82 


2.21 


2.06 2.92 


1.14 


1.20 


1.34 


.63 


24.11 


1909 


. 1.98 


1.32 


1.25 7.40 


2.32 


6.61 


1 . 30 1 . 50 


4.28 


2.03 


2.94 


2.08 


35.01 


1910 


. 2.45 


.50 


.14 3.40 


3.42 


2.43 


.47 3.96 


3.10 


.89 


.53 


.57 


21.86 


1911... 


.72 


4.09 


.52 3.17 


2.84 


2.83 


4.41 8.74 


3.56 


2.34 


3.04 


1.95 


38.21 


1912 


. .55 


1.77 


2.07 2.49 


5.98 


1.93 


4.81 6.79 


4.42 


3.50 


1.51 


1.00 


36.82 


1913 


. 1.11 


.82 


2.81 1.70 


8.20 


1.92 


2.31 3.60 


3.59 


2.92 


1.23 


.34 


30.55 


1914 


. .78 


1.16 


1.74 1.53 


4.64 


5.81 


1.57 4.01 


4.75 


2.88 


.21 


1.83 


30.91 


1915 


. 2.01 


2.48 


1.14 .38 


7.61 


3.06 


5.08 2.84 


9.62 


2.03 


1.65 


.36 


38.26 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



209 



Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DUBUQUE, Dubuque county, Iowa, 


concluded 


1916 


. 2.46 


.76 


3.91 


2.69 2.49 4.61 


.85 


1.49 


6.19 


3.32 


1.17 


.95 


30.89 


1917 


. .85 


.17 


1.56 


2.05 2.56 5.12 


2.10 


2.11 


2.40 


1.87 


.07 


.52 


21.38 


1918 


. 1.83 


1.37 


2.12 


2.16 8.64 6.15 


3.77 


6.09 


1.63 


2.85 


1.10 


1.90 


39.61 


1919 


. .17 


2.87 


2.24 


4.47 2.79 6.24 


7.82 


1.58 


5.35 


6.22 


3.59 


.63 


43.97 


1920 


. .63 


.47 


3.04 


3.91 2.86 5.24 


1.11 


3.44 


1.46 


2.18 


2.01 


.96 


27.31 


1921... 


.18 


.29 


2.05 


4.70 2.26 3.54 


2.48 


4.29 


8.35 


3.43 


.91 


2.43 


34.91 


1922 


.1.16 


1.44 


1.65 


2.89 4.79 1.20 


6.01 


1.99 


3.40 


.72 


4.41 


.41 


30.07 


1923 


. .63 


.40 


2.93 


1.48 1.86 3.66 


1.67 


4.77 


5.04 


1.07 


1.19 


.92 


25.62 


1924 


. .63 


.74 


2.85 


1.12 2.16 5.37 


4.11 


7.05 


2.44 


.43 


.56 


1.31 


28.77 


1925 


. .11 


1.08 


1.03 


2.17 .96 10.80 


7.93 


1.91 


4.16 


2.67 


1.28 


1.66 


35.76 


1926 


. 1.40 


1.14 


1.15 


2.24 2.47 3.76 


5.89 


1.85 


5.48 


1.48 


3.24 


.99 


31.09 


1927 


. .42 


.83 


2.18 


4.12 7.91 2.31 


.84 


1.47 


10.70 


4.55 


1.01 


1.58 


37.92 


1928 


. .20 


1.69 


2.14 


1.71 1.55 3.87 


3.22 


9.38 


1.27 


3.46 


4.88 


1.09 


34.46 


1929 


. 3.13 


1.00 


2.41 


3.47 1.39 4.69 


1.47 


1.83 


1.55 


2.10 


.68 


.54 


24.26 


1930 


. 2.05 


1.19 


1.23 


4.34 4.33 5.21 


.94 


1.92 


2.52 


2.59 


.79 


1.24 


28.35 


1931... 


.79 


.25 


2.20 


1.43 2.00 2.31 


2.57 


2.02 


6.67 


2.92 


4.86 


1.51 


29.53 


1932 


. 1.21 


.56 


2.73 


1.81 3.02 4.09 


2.15 


3.96 


1.71 


2.00 


1.03 


1.70 


25.97 


1933 


. .58 


.54 


4.76 


1.53 7.24 1.74 


3.84 


2.32 


3.28 


.97 


.28 


1.62 


28.70 


1934 


. .90 


.86 


1.72 


1.03 .76 3.10 


5.48 


3.29 


6.54 


1.20 


8.63 


.99 


34.50 


1935 


. 1.59 


1.54 


2.32 


1.57 3.95 4.75 


3.82 


4.62 


2.30 


1.69 


3.44 


.96 


32.55 


1936... 


. 1.46 


1.72 


.81 


.84 1.43 3.66 


.71 


4.68 


5.10 


3.64 


.69 


2.03 


26.77 


1937 


. 3.44 


2.29 


1.84 


3.29 4.21 5.98 


1.57 


1.63 


1.87 


3.32 


1.15 


1.18 


31.77 


1938 


. 2.05 


1.66 


3.73 


2.01 6.90 7.65 


2.96 


6.10 


9.09 


.95 


3.56 


.97 


47.63 


1939 


. .81 


2.12 


1.59 


2.98 1.44 5.17 


5.30 


4.27 


.69 


4.19 


1.09 


.24 


29.89 


1940 


. 1.56 


1.11 


.72 


2.42 3.00 6.48 


3.71 


6.72 


1.48 


2.71 


1.98 


2.01 


33.90 


1941... 


. 1.83 


.35 


2.17 


3.18 2.10 4.42 


.97 


1 67 


8.94 


3.99 


.80 


2.08 


32.50 


1942 


. 1.01 


.52 


1.12 


2.96 5.89 5.96 


3.70 


2.80 


3.82 


2.50 


3.60 


1.69 


35.57 


1943 


. 1.67 


.71 


2.75 


3.27 2.81 4.42 


2.71 


6.59 


1.86 


3.23 


.81 


1.09 


31.92 


1944 


. 1.31 


1.95 


3.00 


3.62 4.68 10.87 


5.16 


4.52 


3.20 


.84 


1.93 


1.42 


42.50 


1945 


. .60 


1.47 


3.92 


3.61 6.34 6.38 


1.74 


3.26 


7.34 


.11 


3.18 


.83 


38.78 


1946 


. 2.27 


.34 


3.58 


.85 2.12 4.59 


.53 


3.18 


8.95 


3.27 


1.61 


1.22 


32.51 


Aver 


. 1.50 


1.40 


2.19 


2.61 3.87 4.53 


3.68 


3.44 


3.99 


2.53 


1.93 


1.46 


33 13 


DWIGHT, Livingston 


county 


1896 








3 . 88 3 . 13 


4 61 


2 61 


5 09 


64 


3 54 


11 




1897 


. 5.34 


1.46 


3.57 


2.74 1.81 5.25 


2.50 


1.60 


.81 


.44 


4.77 


1.59 


31.88 


1898 


.3.80 


2.07 


6.64 


2.95 6.12 3.79 


.29 


3.35 


4.86 


4.42 


2.50 


1.26 


42.05 


1899 


. .80 


2.13 


1.76 


.70 2.08 5.07 


4.73 


2.29 


2.57 


2.31 


2.03 


2.06 


28.53 


1900 


. 1.76 


4.50 


2.87 


1.09 3.72 2.99 


4.49 


5.03 


1.99 


1.69 


3.35 


.42 


33.90 


1901... 


. 1.60 


1.03 


3.17 


.50 1.93 3.71 


2.00 


1.67 


2.05 


1.44 


1.14 


2.54 


22.78 


1902 


. .44 


1.43 


3.82 


2.10 5.72 11.53 


7.52 


3.62 


5.36 


2.09 


3.11 


1.49 


48.23 


1903 


. 1.55 


3.17 


2.50 


5.14 3.24 2.37 
















1904 
























1905 




















1.64 




1906... 


. 2.99 


1.76 


2.15 


2.06 2.07 2.49 


4.84 


1.85 


3.80 


1.54 


2.80 


2.64 


30.99 


1907 


. 5.38 


.14 


2.22 


2.56 3.13 2.88 


8.85 


7.30 


6.34 


.45 


2.02 


3.01 


44.28 


1908 


. 1.06 


3.41 


3.27 


3.89 6.79 .97 


2.61 


1.09 


1.22 


.61 


2.03 


1.14 


28.09 


1909 


. 1.73 


4.29 


1.79 


7.13 2.48 6.06 


1.50 


3.53 


2.34 


2.38 


4.24 


2.96 


40.43 


1910 


. 2.37 


1.05 


.52 


3.84 5.11 3.00 


1.36 


4.66 


5.73 


1.44 


.26 


1.24 


30.58 


1911... 


. 1.91 


1.84 


2.10 


4.58 2.79 1.78 


1.18 


2.08 


6.67 


4.30 


2.57 


2.27 


34.07 


1912 


. .47 


1.10 


1.72 


4.68 4.12 2.84 


2.38 


2.96 


2.65 


3.17 


2.16 


.83 


29.08 


1913 


. 2.59 


1.89 


4.18 


2.77 5.97 2.40 


1.61 


2.33 


.88 


2.98 


2.06 


1.30 


30.96 


1914 


. 2.17 


.47 


1.29 


2.09 3.80 1.80 


1.33 


2.47 


2.69 


1.48 


.27 


2.00 


21.86 


1915 


. 1.84 


2.00 


.70 


1.66 5.09 1.51 


9.20 


6.81 


4.37 


.87 


1.65 


1.36 


37.06 


1916... 


. 6.26 


.32 


2.34 


1.34 5.06 6.22 


T 


1.88 


1.86 


3.19 


1.99 


2.23 


32.69 


1917 


.1.82 


.44 


2.37 


3.39 1.59 6.43 


1.65 


2.19 


2.34 


2.99 


.20 


.67 


26.08 


1918 


. 2.31 


1.69 


1.36 


3.77 4.66 3.90 


1.87 


3.95 


1.95 


3.77 


2.07 


2.96 


34.26 


1919 


. .18 


2.34 


4.64 


2.53 5.22 1.82 


1.97 


1.48 


3.39 


2.38 


3.58 


.55 


30.08 


1920 


. 1.35 


.24 


5.55 


7.03 3.61 1.56 


1.02 


1.30 


1.46 


1.37 


1.15 


2.64 


28.28 


1921... 


. 1.53 


.32 


4.10 


3.77 1.36 5.79 


1.92 


3.86 


7.34 


2.70 


3.98 


2.64 


39.31 


1922 


.1.38 


.97 


5.27 


4.67 5.52 .89 


2.55 


1.80 


1.62 


3.07 


2.01 


1.29 


31.04 


1923 


. .98 


1.14 


3.10 


.94 6.70 4.56 


.84 


3.96 


2.73 


4.93 


1.50 


3.06 


34.44 


1924 


. 1.70 


2.15 


2.43 


1.50 1.96 6.74 


2.16 


8.98 


3.28 


.85 


.79 


2.65 


35.19 


1925 


.64 


1.73 


2.27 


1.76 .58 2.38 


2.31 


2.30 


4.72 


2.96 


2. 84 


.76 


25.25 



210 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DWIGHT, 


Livingston county, concluded 


1926... 


. 1.58 


2.60 


2.45 


3.34 


3.33 2.90 


3.77 6.27 


9.94 


2.57 


4.59 


1.10 


44.44 


1927 


. 1.70 


3.26 


2.81 


7.21 


5.64 3.50 


4.04 3.06 


4.92 


3.85 


5.04 


3.58 


48.61 


1928 


. .53 


.53 




















* 
1934... 














5.31 


2.27 


4.82 


1.40 




1935 


. 2.33 


2.59 


3.76 


2.43 


6.46 .... 


4.94 4.83 


3.04 


1.05 


4.27 


1.15 




1936 


. 1.49 


1.37 


1.24 


1.77 


2.79 .68 


1.51 3.95 


7.94 


2.78 


1.33 


2.43 


29.28 


1937 


. 2.77 


1.00 


1.29 


5.32 


3.16 4.35 


2.78 1.54 


.98 


3.11 


1.50 


1.58 


29.38 


1938 


. 1.86 


3.32 


3.34 


4.79 


4.40 4.52 


4.50 2.79 


4.61 


1.14 


1.38 


1.24 


37.89 


1939 


. 2.48 


2.87 


2.43 


3.42 


2.53 5.23 


3.90 1.87 


.36 


2.32 


1.36 


.66 


29.43 


1940 


. .98 


.81 


1.04 


5.16 


3.89 2.69 


T 4.30 


.95 


2.69 


1.63 


1.42 


25.56 


1941... 


. 2.03 


.81 


1.09 


3.42 


4.02 4.06 


4.03 4.13 


4.76 


9.36 


3.30 


1.17 


42.18 


1942 


. 1.23 


4.05 


2.53 


2.41 


3.40 7.03 


6.40 8.92 


3.93 


1.72 


4.57 


3.37 


49.56 


1943 


. 2.17 


1.20 


2.43 


5.94 


9.13 2.23 


3.48 3.62 


1.92 


1.51 


1.09 


.33 


35.05 


1944 


. .70 


2.19 


6.62 


7.60 


4.24 3.66 


2.06 4.16 


2.51 


1.55 


1.20 


1.55 


38.04 


1945 


. 1.04 


1.71 


3.71 


5.09 


6.45 3.48 


1.29 3.55 


7.78 


1.44 


3.04 


2.14 


40.72 


1946 


. 1.59 


.95 


3.08 


1.31 


4.81 8.50 


4.04 1.33 


1.10 


2.75 


3.57 


2.55 


35.58 


Aver 


. 1.92 


1.77 


2.82 


3.42 


4.06 3.82 


3.03 3.45 


3.58 


2.39 


2.46 


1.74 


34.46 


ELGIN, Kane county 


1911... 


. 1.26 


2.81 


.31 


4.29 


1.24 1.79 


1.86 4.60 


5.66 


2.55 


2.46 


1.54 


30.37 


1912 


. .49 


1.46 


1.30 


2.55 


3.41 1.25 


2.75 3.59 


3.11 


4.50 


1.84 


.87 


27.12 


1913 


. 1.53 


1.51 


1.42 


3.49 


5.90 1.53 


4.32 3.25 


2.13 


2.24 


1.49 


1.07 


29.88 


1914 


. 2.37 


.63 


2.59 


.81 


4.73 5.27 


.34 1.40 


2.46 


2.63 


.32 


1.95 


25.50 


1915 


. 1.25 


1.91 


.53 


.73 


7.19 4.12 


5.89 2.26 


3.99 


1.29 


1.79 


.60 


31.55 


1916 


. 2.58 


.61 


1.05 


.68 


3.58 6.64 


.33 1.84 


5.63 


5.11 


2.41 


1.83 


32.29 


1917 


. 1.46 


.68 


1.38 


2.67 


2.83 4.47 


4.84 .79 


2.43 


3.78 


.25 


.63 


26.21 


1918 


. 3.65 


1.61 


1.44 


3.08 


3.67 1.55 


3.44 1.69 


2.56 


3.87 


1.95 


2.67 


31.18 


1919 


. .33 




2.14 


2.78 


5.20 2.32 


3.56 .96 


3.10 


4.70 


2.01 


.73 




1920 


. 1.17 






4.31 


1.68 3.63 


.70 3.42 


2.21 


1.10 


.80 


2.49 




1921... 


.27 


.23 


3.46 


4.35 


1.04 3.05 


.41 4.23 


6.48 


4.00 


3.61 


1.76 


32.89 


1922 


. 1.11 


.83 




3.56 


7.34 .24 


2.92 .86 


3.93 


2.01 


2.57 


1.21 




1923 






3.47 


1.75 


1.78 3.09 


3 . 14 3 . 56 


5.30 


4.11 


1.14 


1.05 




1924 


. 1.37 


2.05 


2.40 


1.72 


2.68 7.15 


3.08 7.17 


3.05 


.75 


1.30 


1.47 


34.19 


1925 


. 1.02 


5.74 


1.88 


5.26 


3.67 9.00 


5.02 .73 


10.32 




1.66 


1.20 




1926... 


. 1.39 




2.21 


2.13 


2.52 4.27 


3.19 2.46 


7.89 


2.50 


6.42 


.40 




1927 


. 1.47 






5.88 


6.85 


1.42 1.70 


6.36 


4.52 


4.10 


2.32 




1928 


. .71 


1.47 


1.44 


3.46 


2.44 5.21 


3.59 5.40 


3.56 


3.57 


4.95 


2.63 


38.43 


1929 


. 4.04 


.84 


3.32 


6.15 


3.67 4.42 


3.52 1.52 


3.12 


2.51 


1.15 


1.08 


35.34 


1930 


. 2.69 


1.76 


1.69 


4.34 


2.23 4.24 


2.55 .64 


3.21 


3.60 


1.45 


.29 


28.69 


1931 


.88 


.36 


3.06 


2.11 


3.48 6.12 


1.66 3.23 


4.19 


3.72 


4.72 


2.95 


36.48 


1932...... 


. 2.00 


1.67 


3.78 


.81 


2.80 3.56 


6.79 2.62 


.70 


6.09 


1.17 


2.82 


34.81 


1933 


. 1.92 


1.17 


2.52 


2.79 


6.95 3.95 


3.45 1.60 


2.52 


2.96 


.42 


.93 


31.18 


1934 


. .82 


.41 


1.08 


1.31 


.55 4.84 


2.16 4.11 


5.78 


1.44 


6.68 


1.60 


30.78 


1935 


. 2.39 


1.55 


3.07 


2.69 


5.81 5.27 


3.12 4.76 


2.85 


2.19 


4.91 


1.26 


39.87 


1936... 


. 1.70 


2.00 


.55 


1.96 


2.52 2.35 


.39 8.90 


11.46 


2 99 


.99 


3.35 


39.16 


1937 


. 2.87 


1.15 


.95 


5.68 


2.46 4.75 


.33 3.21 


2.58 


2.26 


.80 


.94 


27.98 


1938 


. 3.77 


1.95 


4.01 


1.87 


5.52 7.64 


5.43 3.71 


4.93 


.99 


1.49 


1.50 


42.81 


1939 


. 2.12 


2.72 


1.64 


2.88 


6.31 4.50 


3.01 1.97 


1.53 


3.89 


.65 


.35 


31.57 


1940 


. 1.27 


1.41 


1.21 


2.73 


4.97 3.54 


2.46 3.81 


.22 


3.05 


1.95 


1.69 


28.31 


1941... 


. 2.88 


1.19 


2.57 


3.04 


4.18 1.86 


3.93 4.90 


7.68 


8.03 


2.45 


1.40 


44.11 


1942 


.1.14 


1.20 


2.27 


.75 


3.95 5.11 


2.13 4.96 


4.33 


1.53 


3.62 


2.11 


33.10 


1943 


. 2.81 


1.28 


2.25 


4.38 


5.82 1.12 


4.55 7.32 


1.08 


1.60 


2.07 


.42 


34.70 


1944 


.1.18 


2.07 


4.55 


3.56 


3.37 3.39 


1.17 2.98 


1.96 


.44 


.95 


1.42 


27.04 


1945 


. .91 


1.30 


2.69 


4.43 


7.91 3.82 


.94 4.19 


7.77 


1.42 


3.65 


1.72 


40.75 


1946 


. 2.26 


.82 


3.70 


.85 


3.14 3.36 


.11 1.36 


1.29 


2.17 


2.38 


2.38 


23.82 


Aver 


. 1.75 


1.50 


2.18 


2.94 


3.98 3.95 


2.74 3.21 


4.09 


2.97 


2.29 


1.52 


33.12 


FREEPORT, Stephenson county 


1909... 


. 2.65 


1.49 


1.18 


8.29 


3.39 4.17 


1.37 7.49 


2.23 


.79 


3.77 


3.53 


40.35 


1910. 


2.43 


.55 


.41 


3.32 


2.32 .90 


1.45 4.06 


1.86 


.59 


1.37 


.48 


19.74 



1949] CLIMATE OF ILLINOIS: APPENDIX B 211 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 

Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual 
FREEPORT, Stephenson county, concluded 



1911... 
1912 


.50 

... .34 


2.20 
.56 


.37 

1 27 


3.51 
69 


2.97 
2 34 


4.95 
1 56 


1.40 
6 08 


8.03 

4 78 


5.78 
4 75 


3.52 
4.91 


4.04 
1.42 


1.31 


30.01 


1913. . 


. .. 1.45 


1 26 


2 93 


1 97 


7 27 


2 48 


4 50 


4 59 


2 80 


3 41 


1.66 


.14 


34.46 


1914 


. .. 1.04 


1.00 


2 94 


1 48 


3 43 


6 10 


1 97 


1 57 


7 24 


2 00 


.24 


1.99 


31.00 


1915.... 
1916 


. .. 1.39 
2 75 


1.04 
81 


.11 
2 44 


.20 
3 14 


5 30 


4.3 

7 88 


7.21 
1 60 


2.66 
4 60 


6.77 
9 05 


.64 
3 98 


2.95 
1.55 


.18 
1.17 


44.27 


1917.... 
1918.... 
1919.... 
1920 


. . . .98 

. '. '. .88 


.39 
2.46 
2.72 
.43 


1.49 
1.69 
3.79 
4 30 


3.11 
2.35 
4.46 
4 18 


3.99 
4.03 
3.88 
2 59 


i.'se 

3.21 

2 87 


.78 
3.06 
4.21 
1 76 


.50 
3.20 
2.21 
1 71 


3.70 
1.92 
7.18 
45 


3.96 
3.17 
8.20 
2 71 


.11 
1.35 
2.33 
1.99 


i.'47 
1.44 
1.62 


25! 49 


1921... 
1922.... 
1923.... 
1924 


.18 
. .. .80 

'. i.03 


.23 
1.55 
.35 
1.03 


3.45 
2.37 
4.99 
2 74 


4.01 
4.16 
.85 
3 22 


2.96 

3.84 
1.29 
1 28 


4.07 
.81 
4.20 
7 49 


2.35 
8.00 

r.os 

2 26 


'.'74 
4.55 
7 57 


3. '46 
3.08 
2 06 


4.42 
.60 
2.83 
.47 


1.68 
2.93 
.87 
1.18 


2.99 

2.' 04 
1.66 


si! 99 


1925 


25 


2 68 


93 


2 69 


1 01 


7 42 


6 42 


2 95 


6 43 


3 22 


1.41 


2.15 


37.56 


1926 . 


. . . 1.13 


2 34 


1 92 


1 42 


3 02 


9 40 


5 75 


2 47 


6 76 


2.16 


3.13 


1.09 


40.59 


1927.... 
1928 


. .. .84 
43 


1.15 
1 19 


2.40 
1 98 


4.76 
2 92 


8.24 
1 57 


2.42 
5 98 


.28 
3 02 


.91 

4 98 


5.61 
69 


4 29 


6 08 


1.80 
1.83 


34! 96 


1929 . . 


. . . 3.31 


1 15 


2 23 


5 63 


2 50 


4 17 


2 03 


1 61 


4 14 


3.23 


1.15 


.67 


31.82 


1930 


. .. 1.96 


1.48 


.72 


4 25 


3 05 


7 22 


1 29 


96 


4 61 


2.18 


1.15 


.82 


29.69 


1931... 


.86 


.48 


1.74 


1.69 


2.93 


2.14 


2.84 


5.43 


4.02 


4.76 


6.48 


2.68 


36.05 


1932 . 


. . . 1 . 12 


62 


2 14 


1 08 


4 38 


4 29 


2 46 


3 35 


41 


3 11 


.25 


1.69 


24.90 


1933 


. . . .52 


.41 


2 47 


2 12 


6 76 


1 31 


6 45 


1 35 


2.90 


1.38 


.39 


.83 


26.89 


1934 


. .. .88 


.44 


1.22 


1 05 


1.12 


5 34 


3.90 


2.94 


6.04 


1.36 


7.61 


1.58 


33.48 


1935 


. . . 2.42 


1 15 


2 24 


1 93 


6 32 


4 18 


2 18 


4 23 


2 65 


1 51 


4 77 


.78 


34.36 


1936... 


. 1.27 


1.41 


81 


1 74 


81 


2 96 


1 36 


6 25 


7.51 


2.77 


.50 


3.07 


30.46 


1937 


. . . 3.72 


1.56 


1.43 


3 05 


3 31 


8 65 


1.71 


2.92 


1.26 


3.72 


.98 


1.32 


33.63 


1938 


2 57 


1 94 


2 69 


2 29 


4 81 


8 53 


5 30 


8 53 


7 61 


1 09 


2 86 


1.05 


49.27 


1939 


. . . 2.19 


2.15 


1 43 


2 98 


1 39 


3 38 


2 05 


1 96 


1 36 


1 66 


.42 


.32 


21.29 


1940 


. . . 1 . 44 


1.16 


.71 


3 16 


2 42 


4 38 


4 01 


5 07 


.40 


2.52 


2.05 


1.62 


28.94 


1941 


. 2 70 


94 


2 18 


3 16 


3 49 


4 15 


2 52 


3 49 


8 12 


4 06 


1 70 


1.48 


37.99 


1942 


. . . .78 


.68 


84 


84 


4 62 


3 18 


5 20 


6 66 


7 59 


1 18 


2.65 


3.04 


37.26 


1943.... 
1944 . 


. .. 1.80 
. . . 1 . 56 


.99 

1 72 


2.76 
3 52 


3.52 
3 53 


4.95 
6 53 


6.60 
4 08 


2.70 
4 98 


5.90 
2 66 


2.33 
2 24 


2.22 
58 


1.65 
3 65 


.52 
1.60 


35.94 
36.65 


1945 


. . . .94 


1.29 


2.00 


3 22 


7 51 


5 65 


80 


3 58 


6 26 


.69 


1.75 


2.26 


35.95 


1946 


. .. 2.70 


.48 


2.83 


66 


3.31 


4 66 


.78 


4.72 


3.22 


1.42 


3.23 


1.27 


29.28 




1 48 


1 20 


2 04 


2 81 


3 65 


4 52 


3 24 


3 82 


4 18 


2 58 


2 25 


1.53 


33 27 































GALESBURG, Knox county a 



1861 
1862 


'. '. 3.47 


2.76 
.44 


3.22 
2.38 


3.60 
4 78 


2.65 
3 27 


3.71 

5 71 


3.56 
5 58 


1.52 
5 67 


6.00 
5.58 


4.35 
.96 


.98 
2.03 


1.70 

2.88 


42.75 


1863 
1864 


.. 2.85 
.. 1.23 


2.66 
.57 


1.80 
3 14 


4 02 


3.62 
1 80 


4 08 


.74 
3 40 


1.80 
2 22 


1.85 
2 16 


4.74 
2.60 


.34 
2.96 


2.41 
4.55 


32! 73 


1865 


.. .30 


2.69 


3.52 


4 65 


1.58 


3 94 


6 74 


4.70 


5.08 


2.39 





.70 


36.29 


1866... 


. . 2.75 


98 


1 87 


2 52 


1 14 


88 


4 64 


4 82 


8 38 


2 00 


41 


1.58 


31.97 


1867 


. . .45 


2.36 


1 92 


1 16 


6 38 


3 13 


41 


3 21 


.94 


.91 


1.40 


.96 


23.23 


1868 
1869 
1870 


.. .30 
.. 1.62 
. . .63 


.50 
2.30 
.30 


5.40 
1.30 
3.86 


5.74 
1.01 
.60 


6.74 
3.18 
1.35 


1.22 
8.54 
1 27 


1.79 
9.00 
1 10 


3.51 
6.31 
3.70 


5.28 
1.06 
3.96 


1L54 
4.46 


3.74 
2.80 
.60 


1.00 
1.22 
1.08 


39! 88 
22.91 


1871... 


. . 2 80 


1 50 


2 05 


2 64 


2 72 


3 41 


3 51 


6 46 


90 


3 80 


1.94 


2 60 


34.33 


1872 

* 

1895 


* 
. . 1.85 


* 
.39 


1.70 

* 

1 45 


2.25 

* 

3 61 


2.34 

* 

3 62 


4.80 

* 

1 40 


8 81 


* 
2 54 


* 
6 10 


* 
1 00 


* 
3.51 


* 
5.13 


* 
39.41 


1896... 


. 1.15 


1.40 


1.57 


3 62 


4 19 


3 65 


7 25 


4.91 


5.28 


2.06 


2.30 


.38 


37.76 


1897 .. . 


. 6 32 


98 


5 67 


4 18 


1 20 


2 38 


4 45 


1 01 


2 05 


20 


2 47 


1 47 


32.38 


1898 


. . 5.30 


1.86 


5 90 


3 85 


7 98 


5 02 


97 


10 18 


5 69 


2.48 


2.67 


.83 


52.73 


1899 


. . .42 


1.74 


3.01 


1.55 


6.87 


2.00 


2.71 


1.14 


2.95 


2.48 


1.42 


2.64 


28.93 


1900 


.. 1.95 


3 66 


3 20 


1 22 


3 97 


42 


3 21 


4 23 


3 86 


2.94 


2.28 


.45 


31.39 


1901... 


. . 1.11 


1.07 


2.55 


1.14 


1.25 


3.17 


2.51 


.65 


2.40 


.91 


1.15 


.89 


18.80 


1902 


. . .52 


1 42 


3 66 


2 22 


3 70 


9 63 


8 07 


7 90 


4 04 


3.27 


2 00 


2.07 


48.50 


1903 


1 10 


1 72 


2 95 


5 62 


4 57 


2 43 


1 53 


6 40 


2 45 


2 20 


1 08 


98 


33 03 


1904 


. . 3 06 


74 


3 58 


2 32 


3 81 


3 50 


7 87 


3 05 


5 54 


.10 


.20 


1.77 


35.54 


1905 


1 07 


1 13 


1 96 


5 38 


3 38 


4 26 


4 59 


4 37 


2 08 


2 69 


2 30 


1 78 


34 99 































Data from 1895 thru 1909 are for Knoxville, 5 miles southeast of Galesburg. 



212 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 

Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual 

GALESBURG, Knox county, concluded 



1906... 


. . 3.30 


2.13 


3.51 


2.52 


2.60 


2 50 


3 08 


2 83 


4 30 


1 46 


2 65 


1 81 


39 69 


1907 
1908 


.99 


.07 
4 39 


2 '78 


.29 
2 19 


2.29 
9 55 


2 53 


5.92 
4 10 


5.84 
3 81 


2.08 
1 39 


.11 
1 38 


1.32 
3 24 


1 36 


37 71 


1909 


. . 1 . 59 


3.24 


1.76 


4.47 


4.03 


2 56 


7 41 


98 


3 63 


3 52 


5 52 


4 18 


42 89 






























1926... 






















4 81 


93 




1927 


. 1.13 


2.17 


3.01 


5.25 


5.65 


5.09 


1.93 


1.54 


9.89 




3 82 






1928 


.. .32 


1.58 


1.95 


3.94 


1.55 


7.66 


4.78 


2 75 


1 46 


3 87 


4 91 


1 95 


36 72 


1929 


. . 4 . 00 


.94 


3.79 


5 51 


1 76 


4 80 


9 17 


2 40 


1 81 


3 53 


1 92 


93 


40 56 


1930 


. . 2.87 


1.60 


1.09 


1.91 


2.64 


4 51 


1 60 


2 31 


3 45 


2 36 


2 22 


57 


27 13 


1931... 


.58 


.80 


3.08 


2.88 


4.91 


3.20 


3.92 


3.35 


4 74 


2 38 


3 30 


2 20 


35 34 


1932 


. 1 68 


1 24 


2.35 


1 44 


5 08 


4 80 


6 67 


6 11 


3 45 


3 66 


1 25 


3 32 


41 05 


1933 


.. 1.92 


1.04 


2.96 


2.33 


8.16 


1 70 


1 97 


1 60 


4 17 


2 27 


56 


1 52 


30 20 


1934 


.. .82 


.88 


1.43 


2.25 


1.50 


6.28 


5.38 


2 34 


8 87 


1 33 


6 87 


1 30 


39 25 


1935 


.. 2.27 


2.67 


3.24 


1.94 


7.39 


5.89 


3.04 


4.76 


3 48 


2 01 


5 87 


1 43 


43 99 


1936... 


. 1.51 


1.93 


1.42 


2.47 


3.94 


69 


56 


2 71 


7 51 


2 68 


53 


3 24 


29 19 


1937 


.. 3.29 


.95 


1.40 


3.93 


3.74 


3.08 


2 95 


2 93 


2 47 


2 70 


90 


1 42 


29 76 


1938 


.. 4.00 


1.83 


4.65 


3.74 


6.45 


4.91 


5.63 


2 76 


2.06 


98 


2 29 


1 26 


40 56 


1939 .. . 


. . 1 . 40 


1.39 


4.00 


4.13 


2 93 


3 77 


1 47 


4 47 


56 


2 99 


81 


54 


28 46 


1940 


.. 1.49 


1.02 


1.48 


2.83 


1.95 


1.84 


1 99 


3 03 


58 


3 79 


2 09 


1 69 


23 78 


1941... 


. . 3.09 


.68 


1.20 


4.49 


6.64 


5.97 


1.61 


2.59 


7 14 


16 56 


1 73 


1 89 


53 58 


1942 


. . 1 . 22 


3.78 


1.88 


2.33 


5 25 


2 85 


4 95 


3 36 


3 06 


75 


5 20 


3 44 


38 07 


1943 


. . 2.04 


1.17 


1.69 


4.34 


5.01 


4.00 


3 18 


4 52 


1 25 


2 61 


1 26 


34 


31 41 


1944 


.. .51 


2.26 


6.36 


5.52 


4.92 


2.63 


1.50 


2.20 


2 32 


2 85 


2 83 


1 65 


35 55 


1945 


.. .81 


1.21 


4 50 


5 76 


7 32 


5 10 


70 


47 


6 24 


37 


2 15 


2 16 


36 79 


1946 


. . 2.54 


.77 


4.46 


1.21 


4.71 


5 11 


1 02 


3 31 


1 91 


2 16 


3 48 


2 37 


33 05 


Aver 


.. 1.90 


1.58 


2.86 


3.16 


4.07 


3.78 


3.85 


3.55 


3.73 


2 60 


2 34 


1 79 


35 21 































GALVA, Henry county 



1893 


95 


1 65 


2 88 


5 73 


2 45 


1 37 


1 08 


69 


3 57 


46 


2 25 


1 54 


24 62 


1894 .. 


. . . 1 . 64 


.88 


2.53 


1 71 


2 18 


4 14 


99 


1 78 


5 17 


1 16 


1 62 


62 


24 42 


1895.... 


. . . 1 . 33 


.19 


.35 


1.03 


2 53 


1 57 


5 58 


2 74 


5 17 


87 


2 18 


4 20 


27 74 


1896 


1 17 


80 


79 


4 24 


5 25 


3 10 


9 45 


3 69 


6 68 


1 30 


1 42 


30 


38 19 


1897 ... 


. . . 4.91 


1.23 


4 64 


2 61 


1 06 


92 


3 60 


1 01 


2 46 


23 


2 00 


1 08 


25 75 


1898 


. . . 3.38 


1.43 


5.43 


2.77 


8.74 


9 86 


96 


7 13 


3 84 


2 73 


2 19 


61 


49 07 


1899 


. .. .24 


1.39 


2.70 


1.44 


6.07 


2.57 


2.82 


2 40 


2 46 


4 34 


1 23 


1 71 


29 37 


1900 . . 


. . . 1.71 


2 49 


2 95 


1 35 


4 28 


51 


3 69 


8 21 


4 65 


2 61 


1 63 


16 


34 24 


1901... 


. 1.13 


1.77 


2.70 


.95 


1.51 


3.70 


4.59 


1.38 


2 84 


1 17 


1 08 


1 09 


23 91 


1902 


. . .44 


1 29 


4 17 


2 07 


5 01 


8 96 


10 54 


3 78 


6 04 


3 28 


1 82 


1 64 


49 04 


1903 


. .. .74 


1.95 


2.72 


4 07 


5 42 


3 64 


5 77 


4 91 


5 30 


1 88 


1 08 


92 


38 40 


1904 


. .. 2.18 


.89 


3.66 


2.60 


3.05 


2.49 


8 83 


5 97 


5 49 


24 


23 


1 96 


37 59 


1905 


. .. .67 


1.64 


2.34 


4.78 


3.96 


5.16 


2.16 


2 58 


1.47 


2 85 


1 87 


1 56 


31 04 


1906... 


.. 3.01 


2.19 


2.24 


1.92 


2.33 


3 49 


2.10 


2 50 


4 02 


69 


2 09 


1 78 


28 36 


1907.... 


. .. 3.24 


.20 


1.27 


3.16 


2.83 


2.44 


5.23 


6.41 


2 69 


.65 


1 43 


1 11 


30 66 


1908 


. . . 1 . 83 


3.01 


4 65 


3 50 


9 32 


3 84 


2 68 


3 91 


1 57 


1 42 


3 64 


48 


39 85 


1909 


. .. 1.17 


3.65 


1.58 


4.08 


3.32 


2 98 


4 74 


90 


2 85 


2 60 


5 39 


3 64 


36 90 


1910 ... 


. . . 1 . 75 


1.26 


33 


2 52 


5 55 


1 53 


2 24 


80 


4 11 


1 17 


32 


89 


22 47 


1911... 


. 1.71 


2.75 


1.27 


3.57 


1.62 


2.81 


3 99 


2 44 


8 29 


2 05 


2 76 


2 39 


35 65 


1912 


. . . .18 


1 34 


2 23 


4 65 


3 56 


2 56 


3 16 


1 72 


2 92 


5 85 


2 17 


78 


31 12 


1913 


. . . 1.31 


2.03 


4.35 


2.36 


4 64 


6 18 


66 


3 75 


1 85 


2 05 


1 74 


69 


31 61 


1914 


. .. .93 


.83 


2.12 


1.58 


2.37 


3 45 


28 


2 03 


6 41 


2 33 


38 


1 69 


24 40 


1915 


. .. 1.81 


2.22 


.83 


.80 


7 16 


3 25 


6 85 


2 40 


4 96 


28 


3 92 


66 


35 14 


1916... 


.. 4.76 


.36 


2.99 


2.18 


5.30 


4.71 


1.09 


2 93 


3 85 


4 05 


1 61 


1 98 


35 81 


1917 


. . . .85 


.18 


2 27 


3 80 


4 14 


6 06 


2 51 


1 44 


3 82 


2 75 


06 


62 


28 50 


1918 


. . . 2.05 


1.52 


.22 


2.06 


7.21 


5 74 


5 35 


5 25 


2 43 


3 06 


1 80 


2 16 


38 85 


1919 .. 


10 


1 71 


2 64 


2 96 


4 30 


3 15 


2 27 


4 53 


3 14 


3 07 


2 77 


25 


30 89 


1920... 


.46 


.19 


4.91 


5.79 


3.44 


1.38 


2.48 


2.42 


1.66 


2.38 


.83 


1.81 


27.75 



1949] CLIMATE OF ILLINOIS: APPENDIX B 213 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GALVA 


, Henry county, concluded 


1921 


.1.27 


.31 


5.59 


6.11 


1.23 


3.65 2.38 6.18 


5.95 


2.36 


1.87 


2.47 


39.37 


1922 


. .89 


1.16 


3.51 


3.47 


4.49 


.48 4.18 .94 


3.06 


.59 


2.47 


.73 


25.97 


1923 


. .93 


1.16 


4.29 


1.15 


3.10 


4.36 .98 2.63 


3.18 


2.51 


.96 


1.90 


27.15 


1924 


. 1.39 


1.81 


3.42 


1.29 


3.00 


8.42 3.16 13.51 


2.93 


1.00 


.82 


2.00 


42.75 


1925 


. .64 


1.08 


1.30 


4.40 


1.49 


2.19 4.47 1.45 


4.59 


3.06 


1.78 


1.59 


27.04 


1926... 


.90 


2.33 


2.44 


2.91 


2.32 


5.23 5.08 6.14 


9.71 


1.78 


4.37 


1.04 


44.25 


1927 


. 1.00 


2.16 


2.97 


7.03 


8.39 


3.93 1.40 3.02 


7.75 


4.42 


4.15 


1.76 


47.98 


1928 


. .44 


1.69 


1.65 


3.77 


2.63 


5.98 5.01 2.89 


2.61 


4.69 


5.48 


1.76 


38.60 


1929 


. 3.94 


.81 


4.42 


6.00 


1 fi7 


4.17 6.41 2.52 


2.36 


3.41 


1.83 


.72 


38.26 


1930 


. 2.41 


2.61 


1.18 






3.17 1.31 2.37 


1.84 


2.16 


2.25 


.52 




1931 


. .60 


.66 


2.44 


2.61 


4.63 


1.98 1.10 4.83 


5.57 


3.61 


4.80 


2.11 


34.94 


1932 


. 1.38 


1.47 


2.13 




7.03 


4.47 3.37 3.81 


1.80 


4.45 


1.16 


3.23 




1933 


. 2.42 


.86 


2.45 


3.16 


7.32 


1.33 2.06 2.10 


4.40 


1.81 


.45 


.99 


29.35 


1934 


. .76 


.79 


1.19 


1.40 


.76 


3.85 3.27 3.22 


7.90 


1.11 


6.05 


1.27 


31.57 


1935 


. 1.74 


2.13 


3.23 


1.93 


6.15 


6.61 4.97 1.62 


2.40 


1.38 


4.31 


1.12 


37.59 


1936... 


.1.53 


1.83 


.68 


1.81 


2.00 


.97 .42 3.06 


8.32 


1.99 


.45 


3.01 


26.07 


1937 


. 3.17 


.75 


1.58 


4.56 


2.47 


2.76 2.91 2.45 


1.44 


2.46 


1.42 


1.27 


27.24 


1938 


. 3.84 


1.88 


4.19 


3.67 


6.19 


3.50 5.93 1.54 


2.78 


1.07 


1.96 


1.06 


37.61 


1939 


. 1.65 


1.50 


3.47 


3.50 


2.39 


6.96 3.61 4.14 


38 


2.09 


.90 


.31 


30.88 


1940 


. 1.07 


.70 


1.21 


3.51 


2.06 


3.62 2.79 3.98 


1.15 


3.15 


2.06 


1.68 


26.98 


1941... 


. 2.89 


.80 


1.45 


4.56 


6.78 


6.30 4.79 1.81 


6.28 


13.04 


1.61 


1.83 


52.14 


1942 


. .69 


2.. 93 


2.27 


1.58 


5.38 


5.41 4.83 2.95 


2.45 


1.01 


4.70 


2.86 


37.06 


1943 


. 1.48 


1.43 


1.70 


5.38 


4.91 


3.92 2.50 4.53 


1.24 


2.00 


1.34 


.31 


30.74 


1944 


. .35 


2.13 


5.16 


5.02 


3.63 


4.24 2.01 3.40 


2.59 


.99 


2.55 


1.26 


33.33 


1945 


. .60 


1.25 


4.31 


5.08 


7.50 


3.77 1.25 1.51 


6.27 


.08 


1.99 


1.81 


35.42 


1946 


. 2.33 


.74 


2.88 


1.03 


5.79 


7.00 1.28 3.00 


2.94 


2.06 


3.10 


2.14 


34.29 


Aver 


.1.59 


1.44 


2.65 


3.18 


4.19 


3.89 3.47 3.32 


3.92 


2.33 


2.15 


1.46 


33 59 


GENESEO, Henry county" 


1873... 






.70 


1.65 


4.00 


1.80 1.95 2.60 


1.40 


.80 


.80 


5.00 




1874 


. 4.70 


1.00 


1.50 


1.80 


.60 


3.20 2.60 3.30 


7.00 


1.20 


2.60 


.10 


29.60 


1875 


. 1.20 


5.00 


1.00 


2.80 


1.90 


4.20 7.60 1.15 


5.30 


2.10 


.60 


2.60 


35.45 


1876... 


. 3.60 


2.30 


3.70 


3.70 


4.40 


3.01 3.50 1.50 


4.60 


1.30 


3.00 


1.00 


35.61 


1877 


. 2.20 




4 70 


3.90 


3 20 


7 20 3 50 3 00 


1 60 


7 00 


3 50 


2 60 




1878 


. .30 


2.00 


3.50 


4.20 


5.10 


3.10 2.80 5.90 


1.50 


3.10 


.90 


3.30 


35.70 


1879 


. 1.00 


2.00 


4.00 


1.90 


2.10 


3.70 4.60 3.20 


1.80 


1.80 


2.60 


2.20 


30.90 


1880 


. 3.30 


.80 


3.10 


3.10 


7.00 


6.20 


4.70 


.80 


1.50 


.50 




1881... 


. 3.00 


5.00 


3.90 


2.50 


.50 


7 . 80 1 . 50 .10 


5.60 


7.90 


.50 


1.30 


39.60 


1882 


. 1.50 


2.40 


5.00 


3.50 
















1886 


. 2.81 


1.98 


3.17 


2.17 


3.98 


.54 .40 .83 


2.99 


2.36 


.76 


.84 


22.83 


1887 


. 2.71 


4.77 


.70 


.86 


1.80 


1.39 1.95 5.74 


2.95 


2.97 


1.24 


3.. 17 


30 25 


1895 


.1.55 


.30 


1.60 


1.23 


2.42 


1.40 7.40 2.78 


2.99 


.75 


2.74 


3.65 


28.81 


1896 


. .92 


1.10 


1.24 


4.55 


4.33 


2.89 6.20 3.54 


5.45 


1.46 


1.21 


.63 


33.52 


1897 


. 4.90 


1.52 


4.03 


3.70 


1.48 


1.44 2.41 1.16 


2.27 


.33 


1.89 


1.61 


26.74 


1898 


. 3.34 


1.77 


6.15 


2.89 


9.30 


9.88 1.17 6.57 


2.72 


4.06 


1.91 


.60 


50.36 


1899 


. .29 


1.63 


2.81 


2.21 


6.15 


2.86 2.91 1.78 


2.22 


3.89 


1.22 


2.44 


30.41 


1900 


. 1.65 


3.04 


3.40 


1.74 


4.41 


.93 2.70 8.19 


3.24 


2.72 


2.16 


.05 


34.23 


1901 


. 1.37 


1.90 


3.11 


1.37 


2.06 


2.61 3.90 1.38 


2.17 


.88 


1.50 


1.16 


23.41 


1902 


. .62 


1.36 


2.90 


2.48 


4.38 


7.89 11.55 4.64 


5.99 


4.19 


2.11 


2.05 


50.16 


1903 


. .96 


1.85 


2.34 


4.97 


7.03 


2.85 2.95 3.96 


6.27 


2.32 


1.09 


1.36 


37.95 


1904 


. 2.08 


1.00 


3.65 


1.84 


3.40 


1.58 10.39 5.60 


5.83 


.27 


.21 


2.14 


37.99 


1905 


. .95 


2.40 


1.60 


3.83 


3.35 


5.21 2.11 4.03 


1.87 


1.98 


2.27 


1.25 


30.85 


1906 


. 3.11 


2.13 


3.65 


2.07 


2.16 


5.69 1.87 1.91 


4.26 


1.47 


3.53 


1.88 


33.73 


1907 


. 3.69 


.60 


2.15 


2.04 


4.15 


2.55 6.47 6.60 


4.05 


.58 


1.23 


.80 


34.91 


1908 


. .70 


3.11 


2.55 






4.34 3.69 


1.13 


1.12 


3.29 


.61 




1909 






1.36 


4.48 


4.16 


2.73 3.43 1.28 












* 


* 


* 


* 


* 


* 


* * * 


* 


* 


* 


* 


* 



Data from 1895 thru 1909 are for Cambridge, 10 miles south of Geneseo. 



214 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GENESEO, Henry county, concluded 


1924... 










1.70 8.90 


4.42 7.16 


2.71 


1.25 


.74 


2.13 




1925 


. .57 


1.61 


1.15 


4.01 


1.05 5.41 


4.19 2.46 


6.06 


3.35 


1.52 


1.46 


32.84 


1926... 


. 1.00 


1.83 


1.57 


2.38 


1.76 5.32 


4.16 6.62 


12.61 


1.22 


3.84 


.70 


43.01 


1927 


. 1.06 


2.39 


2.65 


5.51 


5.15 3.71 


2.22 3.56 


6.72 


3.73 


3.65 


1.79 


42.14 


1928 


. .44 


1.76 


2.11 


4.20 


1.63 5.33 


5.90 3.43 


1.77 


4.42 




1.66 




1929 


. 3.81 


.71 


2.74 


5.22 


2.36 4.19 


4.11 2.56 


3.80 


4.02 


1.89 


.97 


36.38 


1930 


. 2.55 


2.25 


.70 


2.92 


2.45 4.95 


1.53 2.20 


1.90 


2.72 


1.71 


.84 


26.72 


1931 


.62 


.12 


2.64 


2.68 


3.64 3.12 


1.32 2.56 


6.08 


4.66 


4.05 


2.34 


33.83 


1932 


. 1.22 


1.07 


2.67 


1.47 


4.95 3.96 


3.35 8.73 


.95 


3.37 


.95 


2.51 


35.20 


1933 


. 2.42 


.62 


3.13 


2.54 


9.28 1.86 


1.55 2.51 


2.88 


1.35 


.60 


.92 


29.66 


1934 


. .72 


.74 


.98 


1.14 


.73 4.53 


4.59 4.77 


7.65 


.99 


6.02 


1.45 


34.31 


1935 


. 2.14 


1.22 


3.19 


1.64 


7.19 6.42 


2.55 4.65 


3.35 


1.56 


5.58 


1.08 


40.57 


1936... 


. 1.65 


1.94 


.64 


1.49 


1.82 1.08 


.45 3.75 


9.91 


3.12 


1.10 


2.49 


29.44 


1937 


. 2.27 


.95 


1.82 


5.28 


3.86 2.72 


3.25 2.77 


2.00 


2.82 


1.22 


1.01 


29.97 


1938 


. 3.45 


1.92 


3.21 


3.63 


5.93 3.84 


7.02 1.39 


4.89 


.99 


2.94 


.78 


39.99 


1939 


. 1.24 


1.95 


2.57 


3.46 


1.67 6.45 


4.04 9.20 


.93 


2.71 


.55 


T 


34.77 


1940 


. 1.28 


1.60 


1.74 


2.45 


1.78 1.00 


1.28 4.64 


.07 


2.54 


1.46 


1.42 


21.26 


1941... 


. 2.75 


.81 


1.00 


3.56 


4.15 10.91 


2.56 1.39 


6.76 


8.35 


1.67 


1.02 


44.93 


1942 


. .91 


1.60 


2.04 


.78 


4.27 4.88 


4.77 3.69 


3.18 


.68 


3.16 


3.O1 


32.97 


1943 


. 1.30 


.94 


1.41 


5.91 


4.46 4.78 


2.23 6.82 


1.27 


1.60 


1.54 


.33 


32.59 


1944 


. .29 


1.62 


5.18 


4.70 


5.44 3.90 


1.52 2.22 


2.06 


1.13 


2.14 


1.09 


31.29 


1945 


. .42 


.91 


3.40 


4.53 


7.07 3.22 


1.86 3.46 


5.94 


.85 


2.22 


1.71 


35.59 


1946 


. 2.18 


.64 


4.35 


.67 


4.90 7.03 


1.91 3.80 


3.82 


2.08 


3.44 


1.86 


36.68 


Aver 


1.85 


1.74 


2.62 


2.95 


3.76 4.13 


3.56 3.77 


3.90 


2.43 


2.05 


1.57 


34.33 


HENRY, Marshall county 


1899... 


.33 


1.94 


2.26 


1.06 


5.64 3.00 


4.57 1.63 


3.12 


3.45 


1.97 


2.48 


31.45 


1900 


. 1.82 


3.67 


3.15 


1.68 


4.76 2.52 


2.76 6.79 


3.64 


3.94 


2.25 


.14 


37.12 


























1901... 


. 1.45 


1.23 


3.97 


.96 


2.20 2.83 


3.40 1.90 


2.56 


.83 


1.50 


1.76 


24.59 


1902 


. .46 


1.60 


3.60 


2.63 


4.14 11.21 


11.01 5.44 


6.10 


1.60 


3.38 


1.88 


53.05 


1903 


. 1.20 


2.59 


3.84 


5.22 


3.85 2.67 


3.28 5.50 


6.68 


1.35 


1.69 


1.86 


39.73 


1904 


. 2.84 


1.43 


4.28 


3.51 


3.85 3.22 


5.73 4.51 


3.66 


.31 


T 


1.71 


35.05 


1905 


. 1.09 


1.76 


2.64 


3.87 


3.60 5.46 


2.51 4.20 


1.86 


2.91 


2.21 


1.63 


33.74 


1906... 


. 2.23 


1.70 


2.31 


1.65 


2.53 3.31 


2.57 3.91 


5.03 


1.92 


2.56 


2.17 


31.89 


1907 


. 5.85 


.16 


3.20 


2.79 


3.65 3.79 


5.43 4.58 


4.51 


.80 


1.92 


1.23 


37.91 


1908 


. 1.12 


2.51 


3.00 


4.64 


8.90 4.60 


2.82 .94 


.80 


.77 


1.87 


.81 


32.78 


1909 


. 1.44 


3.55 


1.76 


7.11 


3.41 3.77 


3.81 3.93 


3.93 


2.48 


4.66 


3.20 


43.05 


1910 


. 2.24 


1.11 


.12 


3.28 


6.00 .96 


1.27 1.77 


3.53 


1.48 


.54 


1.25 


23.55 


1911... 


. 2.10 


1.91 


1.79 






3.25 2.99 


7.19 


2.24 


2.61 


2.29 




1912 


. .18 


1.16 


1.78 


4.87 


5.15 1.78 


2.30 2.24 


3.01 


5.12 


2.21 


1.19 


30.99 


1913 


. 1.69 


3.25 


3.91 


2.20 


4.15 3.74 


.51 


2.21 


2.65 


2.09 


1.29 




1914 


. 1.53 


.89 


4.41 


1.33 


3.25 2.26 


.22 1.89 


4.07 


2.99 


.21 


1.67 


24.72 


1915 


. 2.07 


2.27 


.95 




5.51 2.49 


6.27 2.17 


5.14 


1.27 


2.32 


.76 




1916... 


. 5.80 


.56 


2.82 


1.07 


. 6.53 


2.29 .68 


2.90 


4.04 


1.37 


1.60 




1917 


.1.18 


.18 


1.54 


4.01 


2.85 5.48 


1.94 2.53 


4.01 


2.85 


.02 


.45 


27.04 


1918 


. 1.57 


1.88 


.88 


3.14 


4.33 3.20 


4.16 6.20 


2.21 


2.97 


2.39 


2.09 


35.02 


1919 


. .29 


1.21 


4.44 


2.91 


4.23 3.52 


1.40 2.85 


4.28 


3.25 


2.73 


.36 


31.47 


1920 


. 1.10 


.19 


4.95 


7.09 


4.55 


2.23 1.35 


1.78 


2.58 


1.17 


2.00 




1921... 


. 1.39 


.30 


5.24 


5.56 


2.16 4.76 




10.07 


2.88 


2.37 


2.79 




1922 


. 1.04 


1.03 


4.26 


2.50 


4.16 1.41 


3.83 1.64 


3.14 


.82 


2.51 


1.36 


27.70 


1923 


. .96 


1.29 


3.97 


.96 


3.25 4.08 


.08 1.90 


4.97 


4.32 


1.51 


1.78 


29.07 


1924 


. 1.61 


1.87 


2.61 


2.63 


1.87 9.82 


3.18 7.89 


4.22 


1.00 


.82 


2.34 


39.86 


1925 


. .36 


1.47 


.96 


3.46 


1.17 4.92 


2.64 1.66 


4.45 


2.81 


3.11 


1.18 


28.19 


1926... 


. 1.23 


2.68 


1.83 


3.37 


3.50 5.32 


5.28 6.62 


10.84 


2.20 


4.83 


.78 


48.48 


1927 


. 1.17 


2.74 


2.97 


5.69 


5.10 4.25 


1.85 3.92 


5.03 


6.11 


4.64 


2.48 


45.95 


1928 


. .36 


1.62 


1.07 


3.00 


2.35 4.47 


1.47 2.48 


2.39 


2.79 


4.34 


1.63 


27.97 


1929 


. 3.98 


.81 


4.04 


6.15 


1.94 2.45 


5.02 2.73 


1.62 


2.94 


1.78 


1.01 


34.47 


1930 


. 2.21 


2.11 


1.62 


2.87 


1.64 3.40 


1.13 2.48 


.69 


2.97 


2.54 


.17 


23.83 



1949] CLIMATE OF ILLINOIS: APPENDIX B 215 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


HENRY, 


Marshall county, concluded 


1931 


.50 


.51 


2.31 


2.11 


4.15 2.46 


3.58 4.15 


3.71 


3.55 


5.65 


2.07 


34.75 


1932 


. 2.22 


1.06 


1.90 


1.14 


5.21 3.75 


2.74 6.07 


2.07 


3.62 




4.10 




1933 




1.50 


3.41 


2.20 


5.68 1.02 


3.24 3.45 


4.62 


1.82 


.19 


1.13 




1934 


.83 


.72 


1.44 


.72 


1.07 2.86 


5.08 4.60 


6.60 


1.43 


4.77 


1.03 


31.15 


1935 


. 2.28 


2.60 


3.77 


2.56 


7.39 5.21 


3.31 1.75 


3.28 


1.11 


3.98 


1.20 


38.44 


1936... 


. 1.26 


1.22 


.50 


1.93 


2.02 .74 


.83 2.40 


8.56 


1.74 


.96 


3.16 


25.32 


1937 


. 3.81 


1.15 


1.26 


4.41 


2.46 3.15 


2.43 2.12 


.82 


1.81 


.79 


1.84 


26.05 


1938 


. 4.10 


2.68 


3.53 


4.16 


5.26 3.91 


4.73 1.49 


1.93 


1.10 


1.26 


.83 


34.98 


1939 


. 2.97 


2.47 


2.95 


3.48 


5.65 3.57 


3.03 3.11 


.92 


3.19 


.92 


.31 


32.57 


1940 


. .86 


.50 


.98 


3.00 


3.43 1.79 


.47 6.19 


.80 


2.41 


1.94 


1.93 


24.30 


1941... 


. 2.50 


.74 


1.48 


4.24 


3.86 5.49 


1.55 3.23 


3.60 


8.41 


1.52 


1.37 


37.99 


1942 


. 1.00 


2.98 


3.23 


1.50 


3.44 3.39 


4.78 4.97 


5.48 


.83 


4.38 


2.51 


38.49 


1943 


. 1.97 


.99 


1.74 


5.14 


7.46 4.51 


.99 5.97 


1.28 


1.38 


1.77 


.34 


33.54 


1944 


. .37 


1.74 


5.78 


5.48 


4.64 2.63 


1.22 2.87 


5.01 


1.33 


1.30 


1.16 


33.53 


1945 


. .96 


1.17 


3.10 


5.14 


8.12 3.96 


.75 2.21 


6.71 


.88 


2.17 


2.00 


37.17 


1946 


. 3.04 


.65 


3.27 


.99 


3.67 4.06 


1.80 3.16 


2.07 


3.21 


2.84 


2.40 


31.16 


Aver 


1.76 


1.57 


2.73 


3.25 


4.07 3.78 


2.95 3.41 


3.90 


2.47 


2.22 


1.60 


33.71 


JOLIET, Will county 


1895 










1.95 1.26 


4.32 2.96 


.93 


.67 


2.90 


6.62 




1896... 


.1.14 


2.07 


1.15 


2.82 


5.28 3.89 


4.97 2.75 


6.69 


.86 


2.96 


.36 


34.94 


1897 


. 6.67 


1.84 


3.80 


2.87 


1.25 5.19 


1.59 .55 


.63 


.44 


4.42 


1.68 


30.93 


1898 


. 4.05 


2.28 


6.12 


1.42 


3.82 7.89 


1.59 4.69 


3.20 


4.53 


2.61 


2.15 


44.35 


1899 


. .82 


1.68 


2.23 


.35 


4.69 2.17 


5.26 1.74 


2.44 


2.39 


1.15 


1.70 


26.62 


1900 


. 1.58 


4.29 


2.24 


.79 


4.27 1.80 


5.08 5.74 


2.05 


1.61 


3.10 


.53 


33.08 


1901... 


. 1.88 


1.62 


3.62 


.56 


.81 3.14 


5.42 2.84 


2.55 


.85 


1.63 


2.36 


27.28 


1902 


. .55 


1.43 


5.51 


2.36 


7.48 12.86 


9.38 3.15 


6.28 


2.44 


2.99 


1.68 


56.11 


1903 


. 1.05 


2.92 


2.22 


3.62 


2.49 1.68 


4.46 4.77 


4.98 


1.40 


.86 


2.18 


32.63 


1904 


. 2.42 


1.75 


4.97 


3.81 


3.19 .94 


2.97 3.19 


4.95 


1.44 


.10 


1.63 


31.36 


1905 


. 1.18 


1.43 


2.29 


4.13 


5.42 5.10 


4.18 4.29 


3.63 


3.57 


2.66 


1.46 


39.34 


1906... 


. 2.23 


2.30 


1.61 


1.67 


2.00 1.85 


2.51 4.00 


5.68 


2.76 


2.63 


3.13 


32.37 


1907 


. 5.70 


.32 


3.00 


2.28 


3.32 1.70 


5.38 4.66 


6.13 


.66 


1.86 


3.07 


38.08 


1908 


. .77 


2.66 


4.33 


3.32 


6.95 1.30 


3.79 3.80 


1.32 


.82 


2.77 


1.30 


33.13 


1909 


.1.12 


3.38 


1.56 


6.60 


3.46 3.80 


1.69 2.95 


3.09 


1.68 


4.55 


3.50 


37.38 


1910 


. 2.52 


1.21 


.24 


3.81 


4.90 .81 


1.46 3.17 


2.75 


1.68 


.62 


1.12 


24.29 


1911... 


.1.58 


1.62 


1.39 


4.45 


3.65 4.65 


2.46 4.54 


12.27 


4.18 


2.87 


1.91 


45.57 


1912 


. .22 


1.09 


1.41 


2.77 


3.62 2.46 


1.55 1.70 


2.34 


4.26 


1.67 


1.01 


24.10 


1913 


. 1.59 


1.46 


3.43 


2.51 


5.21 1.74 


3.48 3.41 


1.37 


2.93 


1.18 


.36 


28.67 


1914 


. 1.96 


.63 


1.45 


1.55 


5.95 3.57 


1.26 4.60 


1.89 


1.54 


.26 


1.72 


26.38 


1915 


. 1.54 


1.71 


.33 


1.03 


4.18 3.16 


6.90 4.30 


3.18 


.58 


1.56 


.99 


29.46 


1916... 


. 5.43 


.55 


1.70 


1.15 


3.84 5.76 


.90 1.22 


3.25 


5.18 


2.08 


2.32 


33.38 


1917 


. .90 


.16 


1.57 


2.28 


2.63 5.72 


4.63 1.51 


2.33 


2.59 


.06 


.73 


25.11 


1918 


. 1.76 


1.92 


1.33 


2.78 


5.26 2.27 


3.23 2.74 


2.15 


3.37 


2.27 


2.07 


31.15 


1919 


. .09 


1.90 


3.08 


3.01 


3.45 1.53 


2.15 1.25 


3.17 


6.37 


3.10 


.88 


29.98 


1920 


. .94 


.13 


5.65 


5.05 


3.26 3.06 


2.09 1.49 


1.69 


1.52 


1.25 


2.37 


28.50 


1921... 


. 1.21 


.60 


3.43 


4.68 


1.50 3.16 


.83 6.56 


5.50 


2.62 


2.97 


3.41 


36.47 


1922 


. 1.56 


.68 


5.21 


3.74 


3.60 .59 


3.22 




2.41 


2.40 


.69 




1923 


. .83 


1.24 




1.28 


5.78 2.28 


1.19 3.73 


3.23 


5.47 


1.58 


2.38 




1924 


. 1.90 


1.59 


3.21 


1.26 


1.64 7.98 


2.52 5.34 


3.50 


.36 


.56 


1.76 


31.62 


1925 


. .51 


1.05 


1.47 


2.75 


1.37 4.28 


2.43 1.54 


2.72 


2.45 


2.92 


1.10 


24.59 


1926 


. 1.24 


1.70 


2.06 


2.54 


3.38 9.92 


3.88 .97 


6.67 


1.44 


3.54 


.90 


38.24 


1927 


.1.10 


1.10 


2.07 


8.65 


5.55 4.59 


3.85 3.29 


6.27 


2.70 


5.34 


2.98 


47.49 


1928 


. .61 


2.40 


1.44 


2.10 


1.87 3.89 


4.84 3.49 


2.10 


2.71 


4.32 


2.55 


32.32 


1929 


. 3.56 


.67 


3.36 


6.11 


1.75 5.80 


3.19 1.34 


1.83 


3.32 


2.53 


1.59 


35.05 


1930 


. 2.89 


2.19 


1.75 


4.01 


2.31 5.55 


.65 4.24 


3.47 


2.69 


2.65 


.38 


32.78 


1931... 


.48 


.79 


2.66 


1.97 


5.40 6.34 


1.92 3.57 


4.40 


3.55 


5.49 


2.58 


39.15 


1932 


. 2.56 


1.56 


3.11 


1.30 


4.36 1.81 


3.78 4.00 


1.35 


3.68 


1.21 


3.10 


31.82 


1933 


. 2.86 


1.89 


3.71 


4.76 


6.51 1.24 


2.07 4.39 


3.24 


3.78 


.54 


1.53 


36.52 


1934 


.1.10 


.44 


1.22 


1.23 


.65 2.52 


.91 2.52 


4.94 


2.62 


4.82 


1.89 


24.86 


1935 


. 2.43 


1.97 


3.55 


2.23 


6.20 4.90 


2.17 3.86 


2.84 


1.29 


4.52 


1.36 


37.32 



216 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS : Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


JOLIET, Will county, concluded 


1936... 


. 1.89 


1.43 


1.10 


3.17 


1.68 


.48 .40 


4.62 9.29 


2.51 


1.00 


3.22 


30.79 


1937 


. 2.67 


1.11 


1.53 


3.91 


2.16 


4.39 1.40 


2.33 1.48 


2.55 


1.20 


1.17 


25.90 


1938 


. 2,21 


2.52 


3.54 


3.45 


4.66 


6.88 3.27 


3.70 4.41 


1.10 


1.27 


1.31 


38.32 


1939 


. 2.63 


2.42 


2.83 


3.17 


1.89 


8.89 2.45 


1.91 .55 


3.15 


1.18 


.67 


31.74 


1940 


. 1.73 


1.25 


1.43 


3.08 


4.29 


2.83 .18 


6.21 .26 


4.19 


2.38 


1.53 


29.36 


1941 


. 2.76 


1.53 


2.59 


2.80 


3.94 


3.69 3.08 


1.18 6.37 


12.40 


2.69 


1.28 


44.31 


1942 


. 1.49 


3.21 


2.72 


2.14 


1.52 


2.08 4.05 


6.85 9.19 


1.32 


4.28 


2.75 


41.60 


1943 


. 1.62 


1.26 


3.13 


4.43 


6.75 


2.85 4.17 


5.32 1.11 


1.63 


.75 


.34 


33.36 


1944 


. .72 


1.56 


6.12 


5.47 


3.05 


2.49 1.80 


3.52 3.15 


1.65 


1.09 


1.20 


31.08 


1945 


. .66 


1.29 


2.63 


4.73 


5.71 


2.82 2.45 


2.68 6.90 


1.66 


2.08 


1.76 


35.37 


1946 


. 2.17 


.72 


3.38 


.85 


3.43 


4.32 1.36 


4.49 3.25 


2.24 


3.38 


2.40 


31.99 


Aver 


. 1.86 


1.58 


2.71 


3.00 


3.72 


3.77 2.98 


3.40 3.70 


2.61 


2.32 


1.82 


33.47 


KANKAKEE, Kankakee county" 


1911 












3.12 1.80 


4.17 8.66 


3.40 


3.10 


2.06 




1912 


.62 


1.86 


1.63 


3.64 


4.57 


2.34 5.98 


2.98 1.83 


2.90 


2.99 


1.15 


32.49 


1913 


.2.63 


1.07 


4.21 


2.92 


5.87 


2.05 2.91 


3.76 1,35 


2.51 


2.47 


.86 


32.61 


1914 


. 2.53 


.35 


2.22 


1.90 


4.84 


2.21 .70 


2.87 3.46 


1.86 


.33 


2.58 


25.85 


1915 


. 1.43 


2.04 


.55 


1.42 


7.28 


1.15 12.92 


4.24 4.41 


.41 


1.90 


1.15 


38.90 


1916 


. 5.02 


.33 


2.93 


1.29 


4.51 


5.63 .11 


4.35 1.92 


4.21 


1.72 


2.48 


34.50 


1917 


. 1.29 


.33 


1.34 


3.17 


3.28 


4.58 5.37 


3.64 2.71 


3.26 


.23 


.66 


29.86 


1918 


.2.14 


2.01 


1.16 


3.52 


5.11 


3.85 3.91 


2.69 2.83 


3.27 


1.69 


3.01 


35.19 


1919 


. .35 


1.74 


3.08 


2.43 


4.61 


4.06 1.42 


1.74 2.15 


4.50 


3.88 


.64 


30.60 


1920 


. .90 


.20 


4.98 


5.33 


2.83 


1.62 .94 


2.13 1.26 


2.01 


1.49 


3.24 


26.93 


1921 


.1.67 


.46 


4.49 


4.02 


1.94 


2.86 1.51 


5.10 4.77 


2.43 


3.51 


1.95 


34.71 


1922 


.1.55 


1.05 


5.34 


3.89 


5.63 


.93 2.50 


1.49 1.84 


3.53 


2.15 


1.34 


31.24 


1923 


. .90 


1.05 


3.06 


1.27 


7.37 


3.11 .66 


3.91 1.73 


4.50 


1.80 


4.57 


33.93 


1924 


.1.67 


1.93 


2.65 


1.55 


2.29 


6.19 2.61 


7.66 2.95 


.42 


.41 


3.31 


33.64 


1925 


. .52 


1.49 


2.25 


1.70 


.34 


2.55 2.08 


.69 4.20 


2.64 


2.46 


.52 


21.44 


1926... 


. 1.45 


2.21 


2.69 


2.99 


3.68 


5.22 4.54 


3.91 10.35 


2.70 


3.28 


1.17 


44.19 


1927 


.1.92 


3.50 


2.55 


8.20 


5.16 


3.90 3.99 


2.09 4.87 


3.66 


4.56 


3.42 


47.82 


1928 


. .65 


1.59 


1.21 


2.35 


1.53 


6.15 5.89 


2.10 2.08 


3.51 


3.58 


2.34 


32.98 


1929 


. 4.02 


.45 


3.28 


4.28 


4.27 


4.67 3.79 


2.88 2.10 


3.64 


2.02 


1.49 


36.89 


1930 


. 2.97 


.98 


1.75 


3.93 


1.24 


4.02 .58 


1.52 2.86 


1.98 


2.73 


.29 


24.85 


1931... 


.52 


.73 


2.41 


3.75 


5.28 


4.51 1.87 


3.81 2.64 


3.89 


3.12 


1.96 


34.49 


1932 


. 1.87 


1.25 


2.65 


1.42 


1.32 


3.97 3.57 


2.66 1.10 


3.55 


1.49 


3.89 


28.74 


1933 


. 2.19 


1.26 


3.18 


4.54 


5.06 


1.10 .32 


3.00 4.12 


3.52 


.75 


1.15 


30.19 


1934 


. .96 


.20 


2.58 


1.35 


.72 


3.51 1.55 


4.89 6.39 


2.88 


5.67 


1.25 


31.95 


1935 


. 2.24 


2.24 


3.55 


2.39 


6.42 


5.77 1.65 


2.16 2.20 


.81 


5.22 


.92 


35.57 


1936 


. 1.05 


1.16 


1.60 


3.24 


2.32 


.88 .88 


4.29 6.19 


2.86 


1.87 


2.05 


28.39 


1937 


. 3.02 


1.30 


.86 


5.98 


3.39 


5.03 2.62 


3.99 2.33 


3.36 


1.35 


1.59 


34.82 


1938 


. 1.58 


3.52 


3.35 


4.04 


5.11 


4.77 2.79 


3.04 3.40 


1.04 


.87 


1.20 


34.71 


1939 


. 3.33 


3.99 


2.51 


4.05 


2.90 


5.42 4.55 


2.31 .41 


2.79 


.91 


.84 


34.01 


1940 


. .96 


.53 


1.16 


4.23 


4.79 


4.35 .54 


4.32 .47 


2.84 


1.99 


1.73 


27.91 


1941 


. 1.72 


.89 


1.14 


3.18 


3.62 


3.69 2.17 


2.90 3.14 


10.69 


3.12 


.87 


37.13 


1942 


. 1.55 


3.58 


2.57 


2.83 


3.81 


4.36 2.70 


8.23 2.19 


1.46 


4.39 


2.40 


40.07 


1943 


. 2.12 


1.44 


3.19 


5.45 


8.28 


2.72 2.72 


2.74 2.01 


1.34 


2.05 


.20 


34.26 


1944 


. .63 


1.58 


5.13 


6.48 


6.40 


4.85 3.35 


2.26 3.03 


2.38 


1.41 


.98 


37.73 


1945 


. .89 


1.87 


3.30 


4.62 


6.21 


3.87 1.20 


2.78 7.27 


1.33 


1.90 


2.33 


37.57 


1946 


. 1.45 


1.60 


3.62 


1.38 


4.12 


5.28 1.47 


2.15 .86 


3.56 


3.13 


2.91 


31.53 


Aver 


. 1.72 


1.48 


2.69 


3.39 


4.17 


3.73 2.73 


3.32 3.22 


2.93 


2.38 


1.79 


33.55 


LA SALLE, La Salle county b 


1901 








.66 


1 34 


3 58 4 99 


2 80 2 25 


56 


1 34 






1902 


. .35 


1.75 


3.57 


2.30 


4.36 


8.90 10.70 




1.67 


3.05 






1903 














4.95 6.27 


1.02 


.65 


.33 




1904 


. 1.96 


.82 


2 67 


2 86 


1 99 


2.37 






.03 


1.65 




1905 


. .90 


1.09 


1.83 


3.71 


5.51 


4.43 1.49 


3.10 3.15 


1.86 


1.93 


1.28 


30.37 


1906... 


. 2.15 


2.01 


2.08 


1.16 


1.85 


3.00 2.62 


7.25 4.89 


1.12 


1.98 


2.14 


32.25 


1907 


. 4.46 


.09 


2.03 


2.36 


3.39 


3.45 5.94 


4.29 4.99 


.87 


1.55 


1.56 


34.98 


1908 


. .96 


2.76 


3.07 


2.89 


6.69 


2.68 3.72 


1.82 1.09 


.41 


1.62 


.83 


28.54 


1909 


. 1.28 


3.06 


1.40 


5.93 


3.05 


2.33 2.52 


4.00 3.15 


1.53 


3.82 


3.64 


35.71 


1910 


. 1.93 


1.17 


.19 


3.78 


6.02 


.89 .79 


3.74 5.09 


1.03 


.77 


1.11 


26.51 



Data prior to November, 1916, are for Manteno, 9 miles north of Kankakee. 
b Data from April, 1917, thru March, 1919, are for Peru, 2 miles west of La Salle. 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



217 



Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 








LA 


SALLE, La 


Salle county, concluded 


1911... 


. 1.78 


2.16 


1.31 


3.37 


1.97 


3.32 3.16 


6.45 7.42 


2.40 


2.26 


2.04 


37.64 


1912 


. .13 


.73 


1.47 


2.98 


3.73 


2.77 2.40 


4.35 2.54 


4.62 


1.54 


.98 


28.24 


1913 .... 


. 1.29 


2.50 


3.03 


1.53 


4.45 


3.32 1.42 


3.71 1.92 




1.32 


1.42 




1914 


. 1.24 


.73 


2.22 


.94 


3.35 


2.58 1.19 


2.88 3.85 


2.14 


.24 


1.38 


22.74 


1915 


. 1.22 


2.18 


.54 


1.09 


5.80 


1.84 8.13 


2.86 7.84 


.98 


2.07 


.86 


35.41 


1916... 


. 5.00 


.79 


3.09 


1.34 


4.58 


8.03 .20 


2.30 2.82 




1.55 






1917 








3.51 


3.02 


4.12 1.25 


1.75 2.89 


4.62 


.15 






1918 




1.98 


.55 


2.63 


5.74 


2.75 2.63 


3.12 2.11 


3.00 


2.28 


2.62 




1919 


.36 


1.94 


4.30 


3.34 


4.28 


4.36 1.05 


2.34 4.62 


4.45 


2.83 


.63 


34.50 


1920 


. 1.21 


.19 


4.96 


4.69 


3.39 


3.52 1.29 


2.05 2.54 


1.80 


1.16 


2.39 


29.19 


1921 


.1.35 


.33 


4.85 


4.88 


2.96 


3.54 .81 


5.96 6.73 


2.67 


2.56 


3.37 


40.01 


1922 


. 1.06 


.57 


3.49 


3.04 


5.14 


.59 1.20 


2.95 3.51 


1.24 


2.07 


.94 


25.80 


1923 


. .84 


1.32 


3.61 


1.18 


3.37 


2.78 1.06 


2.81 5.16 


3.78 


1.59 


1.81 


29.31 


1924 


. 1.42 


1.53 


2.84 


2.72 


1.74 


8.86 4.83 


9.05 3.96 


.79 


.49 


2.10 


40.33 


1925 


. .49 


1.45 


.88 


2.70 


1.26 


3.44 1.67 


.65 3.08 


2.65 


3.46 


1.37 


23.10 


1926 


. 1.03 


2.52 


2.64 


3.45 


2.20 


4.09 4.37 


3.02 11.68 


1.87 


4.44 


.65 


41.96 


1927 


. .98 


2.40 


2.40 


6.18 


5.21 


3.74 1.29 


3.04 4.51 


4.59 


4.21 


2.38 


40.93 


1928 


. .44 


1.49 


1.20 


2.24 


1.75 


6.08 3.51 


4.45 2.64 


2.66 


3.69 


2.44 


32.59 


1929 


. 3.73 


.69 


2.76 


5.30 


1.23 


3.23 4.81 


2.39 1.61 


2.69 


1.69 


.68 


30.81 


1930 


. 2.16 


2.04 


2.04 


4.17 


1.24 


3.04 .45 


1.71 2.38 


3.23 


2.11 


.20 


24.77 


1931 


. 1.01 


.77 


2.13 


1.87 


4.06 


3.58 2.41 


3.87 5.47 


6.07 


4.36 


2.08 


37.68 


1932 


. 2.22 


1.14 


2.38 


1.64 


2.70 


3.55 2.54 


7.05 1.07 


4.11 


.59 


3.14 


32.13 


1933 


.2.35 


1.14 


3.00 


4.19 


5.88 


1.07 2.38 


2.97 3.28 


2.00 


.53 


1.04 


29.83 


1934 


. .81 


.68 


.92 


1.12 


.75 


2.41 2.43 


3 . 33 6 . 23 


1.28 


4.82 


1.06 


25.84 


1935 


. 2.15 


2.00 


3.22 


1.85 


6.02 


4.72 2.40 


6.44 3.01 


1.00 


4.15 


1.21 


38.17 


1936 


. 1.25 


1.05 


63 


1.98 


3.05 


.82 .87 


3.85 8.49 


1.60 


.69 


2.53 


26.81 


1937 


. 2.01 


1.22 


1.36 


5.05 


3.07 


3.60 2.43 


4.02 .81 


2.34 


.91 


1.40 


28.22 


1938 


. 3.48 


2.05 


4.25 


3.96 


5.10 


7.38 4.09 


.54 3.93 


.98 


1.40 


.80 


37.96 


1939 


. 1.76 


2.62 


3.00 


3.33 


3.96 


6.26 4.23 


2.89 .89 


3.74 


.68 


.33 


33.69 


1940 


. 1.28 


.88 


1.22 


3.48 


4.71 


2.62 1.68 


4.84 1.06 


3.08 


1.86 


1.42 


28.13 


1941 


. 2.75 


.92 


1.74 


3.07 


3.33 


3.07 3.73 


2.35 8.06 


9.07 


1.76 


1.38 


41.23 


1942 


. 1.11 


2.61 


2.79 


2.32 


2.77 


2.18 6.94 


3.75 3.03 


1.19 


3.48 


2.28 


34.45 


1943 


. 1.91 


1.06 


1.29 


5.82 


6.85 


2.42 1.86 


5.37 1.82 


1.71 


1.70 


.39 


32.20 


1944 


. .47 


2.31 


5.47 


5.05 


3.88 


3.15 .83 


1.89 2.15 


1.00 


.66 


1.35 


28.21 


1945 


. .95 


1.39 


2.45 


4.09 


7.27 


3.30 .15 


3.79 7.24 


.87 


2.77 


3.37 


36.64 


1946 


. 2.32 


.75 


3.21 


.89 


5.09 


4.86 .91 


1.60 1.92 


2.57 


3.00 


2.30 


29.42 


Aver 


. 1 61 


1.46 


2.42 


3.04 


3.76 


3.61 2.71 


3.60 3.94 


2.39 


2.00 


1.57 


32 11 


MARENGO, McHenry county a 


1856 


. .60 


3.95 


.50 


4.04 


3.92 


2.54 2.10 


2.92 2.61 


2.09 


2.97 


3.18 


31.42 


1857 


.1.14 


5.29 


4.88 


2.70 


3.45 


4.70 2.26 


6.53 4.32 


2.02 


.44 


.28 


38.01 


1858 


. 1.95 


.10 


2.99 


3.40 


7.64 


8.00 3.71 


7.53 5.81 


3.43 


4.17 


1.54 


50.27 


1859 


. 1.24 


2.06 


6.06 


2.82 


2.93 


2.08 1.90 


.97 3.95 


.70 


4.33 


.75 


29.79 


1860 


. 1.43 


.90 


1.05 


2.05 


4.58 


4.67 3.26 


1.59 5.22 


1.54 


1.69 


1.87 


29.85 


1861 


. 1.20 


1.74 


2.95 


3.95 


4.49 


2.15 3.64 


4.56 6.38 


2.61 


1.22 


1.68 


36.57 


1862 


. 2.18 


6.00 


1.53 


3.29 


1.95 


3.54 9.99 


4.04 5.90 


1.31 


.08 


1.30 


41.11 


1863 


. 3.13 


1.04 


2.01 


1.70 


3.46 


.41 2.27 


2.52 1.56 


3.06 


1.85 


2.56 


25.57 


1864 


. .45 


.15 


1.25 


1.63 


2.75 


1.30 6.37 


1.13 1 . 57 


2.28 


2.27 


2.76 


23.91 


1865 


. .45 


6.00 


2.62 


2.93 


.88 


4.39 3.78 


9.13 3.59 


1.98 


.72 


.74 


37.21 


1866... 


.54 


.70 


1.72 


2.58 


2.61 


3.98 5.10 


8.09 7.91 


2.20 


.59 


3.84 


39.86 


1867 


. 2.20 


.62 


1.00 


1.80 


4.98 


4.72 4.72 


3.41 1.48 


.29 


1.68 


1.03 


27.93 


1868 


. 1.57 


.75 


4.40 


6.20 


4.93 


9.17 1.15 


4.79 5.65 


1.20 


3.93 


1.04 


44.78 


1869 


. 2.11 


2.68 


1.76 


2.43 


4.80 


9.68 5.39 


4.96 2.59 


.88 


2.50 


2.71 


42.49 


1870 


. 2.28 


.59 


4.43 


1.51 


.54 


.99 4.66 


3.79 5.36 


3.14 


.69 


1.50 


29.48 


1871 


. 2.82 


1.30 


2.23 


2.05 


2.32 


5.17 1.04 


3.07 .68 


2.97 


2.25 


1.93 


27.83 


1872 


. .45 


.42 


2.78 


3.47 


3.41 


3.18 4.38 


3.31 8.89 


.62 


1.47 


.93 


33.31 


1873 


. 2.14 


.33 


1.56 


2.40 


5.23 


2.59 2.61 


1.98 2.34 


2.21 


1.55 


3.42 


28.36 


1874 


. 3.76 


.95 


1.93 


2.02 


2.04 


2.96 1.09 


2.75 2.58 


2.31 


1.48 


.48 


24.35 


1875 


1.38 


1.95 


1.01 


2.33 


3.28 


5.26 4.24 


2.14 7.29 


2.76 


.72 


2.32 


34.68 



a Data prior to 1918 are for Riley, 3 miles south of Marengo. 



218 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MARENGO, McHenry county, continued 


1876... 


. 3.01 


3.51 


3.42 


2.09 


3.76 


4.57 


7.64 1.52 4.70 


.97 


3.67 


.71 


39.57 


1877 


. 1.72 


.03 


5.53 


2.81 


.93 


4.83 


1.96 3.60 .21 


6.57 


2.90 


3.38 


34.47 


1878 


. .85 


1.33 


2.72 


2.89 


4.25 


2.46 


4.73 3.52 1.46 


4.71 


1.06 


2.46 


32.44 


1879 


. .85 


1.54 


1.15 


2.30 


4.97 


4.81 


5.68 1.96 1.20 


1.38 


5.30 


1.47 


32.61 


1880 


. 4.14 


1.62 


1.40 


3.10 


2.68 


5.28 


2.68 4.24 4.02 


2.37 


1.01 


.75 


33.29 


1881... 


. 1.54 


5.28 


6.48 


.98 


3.10 


5.62 


5.88 1.01 5.47 


6.81 


2.36 


2.69 


47.22 


1882 


.1.57 


2.15 


4.58 


3.29 


3.59 


4.42 


3.63 2.08 2.36 


4.17 


1.52 


2.00 


35.36 


1883 


. 2.18 


4.61 


.89 


2.00 


6.18 


3.92 


2.94 1.17 2.04 


4.28 


4.03 


1.67 


35.91 


1884 


. .80 


2.20 


1.51 


2.85 


2.56 


4.22 


4.19 3.36 4.34 


3.85 


1.79 


3.28 


34.95 


1885 


. 2.32 


1.92 


.29 


3.97 


1.72 


5.80 


2.07 6.80 3.86 


2.57 


2.09 


2.37 


35.78 


1886... 


. 3.60 


1.61 


3.68 


3.76 


3.13 


1.89 


.81 5.85 2.25 


2.55 


.98 


1.13 


31.24 


1887 


. 3.59 


4.82 


1.01 


1.55 


.95 


1.23 


2.70 4.85 4.61 


2.75 


1.87 


3.31 


33.24 


1888 


. 1.24 


1.17 


2.34 


2.16 


4.48 


.81 


3.44 4.23 1.00 


1.70 


1.97 


1.87 


26.41 


1889 


.1.86 


1.21 


1.56 


2.48 


4.09 


3.25 


3.44 .77 1.68 


.40 


2.34 


1.44 


24.52 


1890 


. 2.65 


1.52 


2.14 


2.88 


4.33 


9.64 


.53 3.83 .67 


5.38 


1.74 


1.13 


36.44 


1891... 


. 2.22 


1.65 


1.64 


4.05 


4.38 


5.06 


2.40 1.95 .87 


1.16 


3.75 


2.16 


31.29 


1892 


. 1.73 


1.22 


1.49 


2.83 


11.05 


11.21 


3.76 4.42 1.43 


.72 


1.64 


1.71 


43.21 


1893 


. 1.57 


1.55 


1.82 


3.71 


2.99 


5.13 


2.32 .45 4.18 


2.47 


2.34 


1.42 


29.95 


1894 


. 2.24 


1.33 


3.02 


2.62 


3.62 


1.22 


.31 1.33 15.73 


1.57 


2.06 


.44 


35.49 


1895 


. 2.09 


.46 


1.32 


1.81 


2.91 


1.68 


3.43 3.94 2.16 


.41 


2.69 


3.00 


25.90 


1896... 


.61 


1.56 


1.85 


2.97 


5.04 


3.02 


3.29 2.15 9.45 


.38 


1.77 


.43 


32.52 


1897 


. 4.45 


1.49 


3.87 


2.59 


1.08 


3.23 


1.57 1.24 1.15 


.48 


2.52 


1.50 


25.17 


1898 


. 3.89 


3.03 


4.76 


1.90 


2.74 


7.74 


2.27 4.35 2.16 


3.41 


1.64 


.76 


38.65 


1899 


. .44 


1.21 


1.65 


.76 


4.61 


2.56 


4.34 2.36 1.59 


1.72 


1.44 


1.56 


24.24 


1900 


. 1.48 


3.12 


1.35 


1.36 


3.08 


2.43 


6.03 7.09 2.58 


2.74 


2.00 


.42 


33.68 


1901... 


. 1.38 


1.69 


3.38 


.26 


1.10 


2.37 


3.23 1.15 2.01 


.86 


1.05 


1.22 


19.70 


1902 


. .55 


1.42 


2.31 


1.31 


6.16 


6.83 


7.78 1.00 3.58 


2.90 


2.87 


2.35 


39.06 


1903 


. .80 


1.33 


3.47 


3.36 


3.29 


1.65 


4.61 6.52 6.43 


1.97 


.82 


1.66 


35.91 


1904 


. 1.79 


1.43 


3.98 


2.27 


2.81 


1.52 


3.35 3.32 4.79 


1.28 


.15 


1.35 


28.04 


1905 


. .82 


1.69 


2.73 


3.31 


7.46 


6.32 


3.30 5.85 2.38 


3.89 


1.57 


1.40 


40.72 


1906 


. 2.73 


1.96 


1.94 


1.20 


2.83 


1.95 


1.25 4.90 4.05 


1.79 


2.52 


1.47 


28.59 


1907 


. 3.67 


.38 


1.68 


3.09 


4.29 


4.84 


4.92 3.55 4.90 


.50 


1.20 


1.16 


34.18 


1908 


. .77 


2.63 


4.66 


4.05 


6.87 


3.82 


2.68 2.21 .47 


.96 


1.66 


.99 


31.77 


1909 


. 2.50 


2.58 


1.10 


7.70 


1.62 


3.37 


.63 6.25 3.37 


.72 


3.91 


5.05 


38.80 


1910 


. 2.23 


.55 


.24 


3.32 


4.42 


.80 


1.09 3.68 2.57 


1.51 


1.27 


.80 


22.48 


1911... 


.96 


2.10 


.68 


3.83 


2.64 


3.17 


1.21 7.35 4.40 


2.16 


4.70 


1.70 


34.90 


1912 


. .28 


1.08 


1.51 


2.42 


2.31 


5.91 


5.59 4.29 3.60 


5.98 


1.24 


1.08 


35.29 


1913 


. 1.02 


1.65 


2.45 


2.12 


5.63 


2.04 


6.55 3.69 3.09 


3.22 


1.73 


.55 


33.74 


1914 


.1.68 


.76 


3.22 


2.15 


5.27 


5.35 


1.74 2.13 4.34 


2.48 


.50 


1.96 


31.58 


1915 


. 1.48 


1.69 


.84 


.47 


5.99 


4.51 


5.36 1.12 4.71 


1.11 


2.67 


.54 


30.49 


1916... 


. 4.15 


.73 


3.53 


1.69 


3.33 


6.92 


1.52 2.93 5.07 


4.33 


1.96 


2.57 


38.73 


1917 


.1.17 


.49 


1.64 


3.12 


3.14 


5.55 


1.40 .76 3.18 










1918 














1.12 2.91 1.88 


4.02 


1.56 


1.81 




1919 


.27 


2.09 


2.90 


4.02 


3.78 


2.61 


3.98 3.47 6.11 


4.91 


2.34 


.60 


37.08 


1920 


. .73 


.32 


5.43 


3.32 


1.56 


3.34 


.98 3.05 2.54 


1.69 


1.03 


3.37 


27.36 


1921... 


.24 


.68 


4.99 


5.77 


.87 


4.91 


1.54 3.82 9.16 


4.16 


2.22 


4.00 


42.36 


1922 


. 1.07 


1.75 


3.43 


1.87 


2.47 


.19 


5.95 .77 2.83 


1.29 


2.66 


1.26 


25.54 


1923 


. .87 


.49 


3.23 


1.96 


1.02 


4.51 


1.90 5.86 4.54 


3.46 


1.33 


1.82 


30.99 


1924 


. 1.64 


.75 


1.81 


2.30 


2.14 


7.73 


2.30 5.33 2.37 


.14 


1.22 


1.19 


28.92 


1925 


. .45 


1.94 


.78 


3.38 


1.84 


4.69 


4.07 .83 5.86 


3.48 


.82 


1.11 


29.25 


1926... 


.91 


2.46 


.88 


1.85 


3.64 


5.36 


6.52 5.10 7.49 


2.83 


4.60 


.89 


42.53 


1927 


. .96 


.71 


2.15 


5.94 


6.28 


2.97 


1.11 2.75 6.49 


2.81 


3.30 


1.70 


37.17 


1928 


. .52 


.83 


1.62 


3.39 


1.46 


6.73 


2.73 3.98 2.01 


3.58 


5.15 


2.06 


34.06 


1929 


. 2.86 


.42 


2.11 


5.47 


3.36 


8.10 


2.69 1.85 5.61 


2.27 


1.10 


.59 


36.43 


1930 


. 1.61 


1.05 


2.17 


3.30 


2.05 


2.85 


1.95 2.13 5.19 


4.17 


1.22 


.33 


28.02 


1931... 


.66 


.24 


1.95 


1.66 


3.02 


4.08 


4.29 1.50 3.58 


4.76 


3.36 


1.85 


30.95 


1932 


. 1.54 


.84 


2.69 


.69 


2.94 


3.22 


2.62 2.36 1.19 


4.79 


1.17 


2.49 


26.54 


1933 


. 1.11 


1.19 


2.11 


3.02 


8.52 


2.68 


4.21 1.54 2.30 


1.31 


.76 


.45 


29.20 


1934 


. .67 


.19 


.72 


1.06 


.42 


3.84 


2.07 1.71 6.27 


1.87 


5.80 


.98 


25.60 


1935 


. 2.26 


1.33 


1.99 


1.97 


6.16 


3.61 


3.01 3.47 2.51 


1.98 


4.95 


1.03 


34.27 



1949] CLIMATE OF ILLINOIS: APPENDIX B 219 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MARENGO, McHenry county, concluded 


1936 


.1.35 


1.40 


.26 


1.61 


1.38 3.33 


.40 


6.97 9.71 


3.67 


1.21 


2.63 


33.92 


1937 


. 2.85 


1.61 


1.02 


3.79 


2.97 5.27 


1.30 


4.67 2.05 


2.72 


.71 


1.03 


29.99 


1938 


. 3.90 


2.00 


3.45 


1.81 


3.95 6.16 


3.84 


4.32 7.89 


.75 


1.87 


1.48 


41.42 


1939 


.1.54 


2.10 


1.21 


1.96 


2.21 2.98 


3.63 


2.04 1.13 


4.16 


.60 


.40 


23.96 


1940 


. 1.54 


1.12 


1.48 


2.28 


3.79 4.90 


2.98 


6.21 .46 


2.74 


1.70 


1.39 


30.59 


1941... 


. 3.08 


1.30 


2.30 


2.54 


3.76 1.34 


2.37 


4.59 8.40 


7.63 


1.64 


1.27 


40.22 


1942 


. .76 


1.23 


1.99 


.81 


5.07 4.36 


2.71 


4.57 4.42 


1.73 


2.98 


2.26 


32.89 


1943 


. 2.86 


.93 


2.70 


3.35 


4.12 2.37 


3.76 


5.30 1.04 


1.38 


2.62 


.70 


31.13 


1944 


. 1.49 


2.84 


3.90 


3.30 


3.90 3.31 


2.06 


2.39 1.44 


.33 


1.31 


1.67 


27.94 


1945 


. 1.08 


1.39 


1.69 


4.32 


6.95 3.14 


1.24 


4.13 6.17 


1.00 


3.78 


1.72 


36.61 


1946 


. 2.13 


1.46 


3.37 


1.09 


2.62 2.79 


.38 


1.99 1.32 


1.74 


2.43 


2.63 


23.95 


Aver 


. 1.72 


1.64 


2.38 


2.69 


3.60 4.06 


3.18 


3.49 3.87 


2.47 


2.09 


1.66 


32 85 


MINONK, Woodford county 


1896... 


. 1.26 


1.44 


1.08 


3.64 


5.50 3.87 


5.33 


2.67 4.53 


.20 


2.32 


T 


31.84 


1897 


. 5.14 


1.45 


3.18 


2.93 


1.05 2.57 


2.93 


.92 1.90 


.13 


3.92 


1.20 


27.32 


1898 


. 4.21 


1.78 


5.00 


2.87 


6.84 2.92 


.58 


4.76 5.47 


3.86 


2.13 


1.04 


41.46 


1899 


. .50 


1.79 


2.24 


1.58 


4.59 3.75 


2.19 


1.74 4.20 


3.47 


.95 


2.31 


29.31 


1900 


. 1.30 


4.45 


3.02 


1.16 


3.09 1.40 


2.21 


6.43 2.54 


2.24 


2.66 


.37 


30.87 


1901... 


. 1.49 


1.31 


3.60 


.61 


2.41 2.50 


2.40 


.75 1.92 


.75 


.78 


1.87 


20.39 


1902 


. .48 


1.41 


3.89 


2.23 


2.43 9.41 


7.76 


8.56 4.59 


1.59 


3.15 


1.79 


47.29 


1903 


. .71 


2.16 


2.80 


4.65 


3.23 4.12 


6.24 


4.49 7.14 


2.23 


.92 


1.47 


40.16 


1904 


. 2.51 


1.48 


3.95 


2.75 


3.70 1.61 


6.23 


2.69 4.14 


.17 


T 


1.43 


30.66 


1905 


. 1.16 


1.06 


1.97 


3.88 


4.54 3.35 


2.07 


2.59 2.64 


2.10 


1.68 


1.42 


28.46 


1906... 


. 1.89 


1.43 


1.95 


.92 


1.62 2.46 


1.66 


2.51 4.37 


1.50 


2.04 


1.99 


24.34 


1907 


. 3.99 


.06 


1.72 


2.59 


4.14 4.19 


5.72 


3.91 3.82 


.44 


1.89 


2.46 


34.93 


1908 


. .80 


3.83 


2.42 


4.06 


8.77 1.21 


1.88 


1.62 .39 


.69 


1.60 


.67 


27.94 


1909 


. 1.62 


3.50 


1.68 


5.62 


2.56 3.31 


1.98 


3.32 1.98 


2.43 


3.83 


2.90 


34.73 


1910 


. 1.45 


1.08 


.03 


3.63 


4.52 4.07 


1.31 


2.46 3.91 


.93 


.33 


1.16 


24.88 


1911 


. 2.06 


1.80 


2.43 


3.39 


1.32 3.02 


2.87 


3.49 10.13 


3.75 


2.11 


2.47 


38.84 


1912 


. .54 


1.55 


2.05 


5.57 


5.21 4.03 


2.85 


2.85 










1913 


. 2.00 


2.67 


3.45 


3.08 


5.29 2.00 


1.95 


2.21 1.32 


2.39 


2.12 


1.44 


29.92 


1914 


. 1.94 


1.08 


1.39 


1.57 


2.94 4.21 


.53 


1.52 2.99 


2.74 


.05 


1.67 


22.63 


1915 


. 1.40 


1.75 


.87 


1.20 


4.47 1.23 


9.12 


5.97 5.24 


.69 


1.53 


.89 


34.36 


1916... 




.28 


2.33 


1.37 


5 22 7.05 


18 


4 50 2 61 


4 21 


2 75 


1 85 




1917 


. 1.28 


.35 


2.31 


4.31 


1.87 6.91 


1.56 


4.03 3.91 


3.18 


.23 


.74 


30.68 


1918 


. 1.97 


1.11 


.81 


4.22 


4.78 3.56 


3.87 


3.56 2.01 


2.68 


2.18 


2.18 


32.93 


1919 


. .14 


1.72 


1.93 


2.04 


5.75 2.81 


2.20 


2.42 3.00 


3.21 


3.73 


.24 


29.19 


1920 


. .95 


.27 


4.21 


6.74 


3.33 1.76 


2.27 


1.11 1.07 


1.62 


1.27 


2.98 


27.58 


1921 


.89 


.30 


5.04 


5.76 


3.20 6.25 


2.84 


5.28 9.27 


3.28 


2.47 


1.84 


46.42 


1922 


. 1.15 


1.35 


4.36 


2.87 


4.24 1.54 


4.11 


2.21 2.49 


2.32 


2.87 


.91 


30.42 


1923 


. .71 


.64 




1.23 


3,59 3.58 


2.52 


3.96 2.68 


4.44 


1.50 


2.43 




1924 


. 1.67 


2.34 


2.24 


2.95 


2.02 9.86 


2.39 


8.89 3.37 


1.21 


.74 


2.82 


40.50 


1925 


. .50 










4.07 


1.71 5.08 


3.46 








1926... 








2 86 


1 81 3 45 


5 65 


2 85 11 93 


3 46 


5 04 


1 05 




1927 


. 1.40 


2.72 


2.88 


7.57 


6.32 4.06 


2.21 


3.42 2.77 


4.23 


3.72 


2.47 


43.77 


1928 


. .43 


1.85 


.89 


1.73 


1.84 4.65 


2.09 


4.02 2.22 


3.07 


3.52 


2.47 


28.78 


1929 


. 4.13 


.73 


3.59 


4.53 


3.31 3.46 


3.51 


3.36 1.57 


3.83 


1.79 


1.42 


35.23 


1930 


. 2.44 


1.59 


2.36 


4.07 


1.39 3.61 


.86 


4.21 1.32 


2.33 


2.47 


.59 


27.24 


1931... 


. .45 


.69 


2.43 


2.20 


5.28 2.32 


2.94 


3.80 4.58 


3.54 


6.06 


2.22 


36.51 


1932 


. 1.87 


.99 


1.95 


1.19 


5.20 1.89 


3.22 


6.69 1.99 


4.10 


.91 


4.04 


34.04 


1933 


.1.83 


1.11 


4.36 


1.98 


7.47 .70 


1.52 


2.64 6.03 


3.26 


.41 


.73 


32.04 


1934 


. .73 


.53 


1.43 


.88 


.47 2.28 


4.70 


3.35 4.77 


2.04 


4.12 


1.37 


26.67 


1935 


. 1.90 


2.29 


3.50 


2.37 


6.62 4.91 


4.83 


2.73 2.55 


1.00 


4.22 


1.07 


27 99 


1936... 


. 1.42 


1.23 


1.58 


1.29 


2.80 .52 


.77 


1.71 8.35 


1.92 


2.03 


1.76 


25.38 


1937 


. 2.63 


.61 


.94 


3.89 


2.85 3.53 


1.69 


1.79 .77 


2.16 


1.28 


2.26 


24.40 


1938 


. 2.71 


2.38 


3.34 


3.12 


3.94 3.85 


5.13 


2.56 1.34 


.85 


1.55 


.84 


31.61 


1939 


. 2.30 


3.20 


3.00 


4.23 


2.78 3.92 


3.14 


4.09 .33 


3.15 


1.08 


.74 


31.96 


1940 


. .99 


.84 


1.58 


2.45 


4.30 1.48 


1.27 


5.85 .68 


1.82 


2.32 


1.52 


25.10 



220 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MINONK 


, Woodford 


county, concluded 


1941 


. 2.85 


.82 


1.46 


3.72 


3.42 6.26 


1.55 


2.61 4.88 


8.92 


2.64 


1.26 


40.39 


1942 


. .43 


5.24 


2.19 


1.96 


3.01 3.43 


3.28 


4.07 3.64 


.77 


3.93 


3.67 


35.62 


1943 


.2.25 


1.40 


1.97 


6.44 


8.60 2.54 


.36 


5.95 2.02 


1.86 


.64 


.51 


34.54 


1944 


. .65 


1.65 


6.14 


7.63 


6.31 2.28 


2.52 


4.47 2.74 


2.54 


.86 


1.23 


39.02 


1945 


. 1.26 


1.30 


2.77 


4.76 


5.75 5.13 


.69 


1.68 6.82 


1.29 


2.48 


2.67 


36.60 


1946 


. 2.20 


.90 


3.01 


. S 91 


4.86 5.82 


3.29 


1.86 1.20 


3.18 


3.19 


2.12 


32.54 


Aver 


. 1.64 


1.58 


2.52 


3.18 


4.01 3.57 


2.92 


3.48 3.61 


2.42 


2.16 


1.64 


32.73 


MONMOUTH, Warren county 


1894 


. 1.78 


1.35 


2.22 


2.10 


2.10 2.04 


1.02 


2.00 5.61 


1.16 


1.52 


1.49 


24.39 


1895 


. 1.42 


.18 


.84 


2.54 


2.04 2.97 


5.50 


3.04 4.26 


.78 


2.06 


4.81 


30.44 


1896... 


.1.10 


1.35 


.68 


4.50 


4.76 3.56 


5.79 


6.68 6.02 


1.76 


.81 


.35 


37.36 


1897 


. 5.14 


.82 


2.63 


3.25 


.94 2.00 


5.26 


.65 2.78 


.13 


1.87 


1.69 


27.16 


1898 


. 3.20 


1.38 


3.65 


2.73 


6.60 4.67 


1.50 


9.23 7.15 


2.34 


1.53 


.47 


44.45 


1899 


. .37 


1.49 


3.10 


2.84 


6.61 1.24 


1.49 


3.27 2.26 


2.38 


.65 


1.43 


27.13 


1900 


. 1.67 


2.92 


2.10 


1.01 


2.93 .82 


2.65 


4.23 5.31 


2.86 


2.39 


.25 


29.14 


1901 


. 1.24 


1.19 


2.00 


1.23 


1.28 4.96 


5.44 


.37 3.00 


1.03 


.87 


.78 


23.39 


1902 


. .30 


.99 


3.03 


3.13 


3.65 13.97 


7.51 


8.80 3.48 


3.39 


2.28 


2.56 


53.09 


1903 


. .63 


1.66 


2.11 


6.58 


3.63 2.27 


1.92 


6.32 6.57 


2.35 


.72 


.66 


35.42 


1904 


. 2.85 


.80 


3.62 


2.51 


4.61 2.86 


8.66 


5.63 4.29 


.36 


.22 


1.67 


38.08 


1905 


. .83 


2.04 


1.77 


4.98 


3.64 3.87 


2.89 


2.04 1.19 


1.56 


2.16 


1.40 


28.37 


1906... 


. 3.29 


2.12 


3 77 


2.28 


3.11 4.14 


2.73 


1.98 8.98 


2.30 


2.67 


1.76 


39.13 


1907 


. 4.72 


.27 


2.02 


3.19 


2.79 2.72 


7.32 


5.27 1.76 


.74 


1.46 


1.49 


33.75 


1908 


.1.27 


3.33 


3.08 


2.41 


11.29 5.21 


5.12 


3.98 1.56 


1.40 


3.08 


.87 


42.60 


1909 


.1.54 


3.06 


2.02 


3.92 


3.34 3.99 


5.06 


.38 3.68 


3.77 


5.98 


3.88 


40.62 


1910 


. 1.92 


1.51 


.73 


2.91 


4.66 1.97 


2.62 


.37 2.80 


.86 


.48 


1.13 


21.9fc 


1911... 


. 2.53 


3.51 


2.25 


4.12 


1.53 2.05 


4.12 


1.70 20.03 


2.38 


3.00 


1.90 


49.12 


1912 


. .60 


1.61 


1.80 


3.98 


2.77 1.80 


3.94 


1.10 2.70 


5.47 


1.98 


.77 


28.52 


1913 


. 1.66 


2.00 


3.91 


2.91 


6.07 2.49 


.05 


1.31 1.89 


3.21 


2.06 


1.04 


28.60 


1914 


.1.18 


1.10 


1.74 


2.20 


1.86 1.58 


.87 


1.45 6.48 


2.40 


.92 


2.16 


23.94 


1915 


. 2 65 


2.25 


.89 


1.69 


5.69 4 00 


9 58 


1 36 5 81 


52 


3 07 






1916 


. 5.42 


.34 


3.16 


2.15 


7.01 4.18 


2.02 


1.62 4.52 


3.41 


1.54 


1.42 


36.79 


1917 


. .49 


.14 


2.44 


5.53 


3.32 6.81 


4.57 


.89 3 . 40 


2.14 




.64 




1918 


. 1.78 


1.37 


.38 


3.31 


6 41 5 80 


4 80 


3 80 2 13 




2 45 


2 49 




1919 


. .04 


2.28 


2.11 


2.27 


4.22 6.48 


2.08 


2.83 4.49 


3.19 


2.93 


.28 


33.20 


1920 


. .45 


.15 


4.36 


6.23 


3.27 2.13 


3.33 


1.06 1.07 


2.47 


1.22 


.92 


26.66 


1921... 


. 1.21 


.33 


4.99 


4.90 


1.66 6.19 


2.43 


4.58 6.32 


2.38 


1.40 


2.71 


39.10 


1922 


. .93 


1.98 


3.79 


2.88 


5.90 1.22 


4.79 


.67 2.79 


.69 


4.27 


.60 


30.51 


1923 


. .94 


1.05 


4.23 


1.19 


3.21 2.94 


1.18 


4.73 4.88 


1.67 


1.46 


2.35 


29.83 


1924 


.1.56 


1.93 


2.35 


1.29 


2.28 12.02 


4.35 


6.47 1.93 


1.46 


.91 


2.13 


38.68 


1925 


. .63 


1.52 


1.09 


3.32 


1.25 4.87 


3.63 


2.91 5.54 


3.15 


1.82 


1.66 


31.39 


1926... 


.87 


1.75 


1.74 


2.23 


2.30 8.04 


2.70 


5.98 9.45 


2.60 


4.00 


.98 


42.64 


1927 


. 1.11 


2.41 


3.51 


3.99 


5.20 4.64 


2.69 


1.53 2.93 


7.02 


3.48 


1.92 


40.43 


1928 


. 1.08 


1.43 


1.43 


3.39 


1.35 6.48 


3.17 


3.65 2.93 


3.80 


5.18 


1.71 


35.60 


1929 


.4.23 


.88 


4.69 


6.52 


2.70 6.99 


11.66 


2.46 3.24 


3.77 


1.88 


.90 


49.92 


1930 


. 2.64 


1.66 


1.00 


1.97 


2.21 4.26 


1.20 


1.74 2.83 


2.40 


2.55 


.54 


25.00 


1931... 


.37 


.63 


2.57 


2.72 


5.26 3.31 


2.26 


4.67 6.29 


2.78 


3.84 


2.63 


37.30 


1932 


. 1.33 


1.73 


2.48 


1.00 


3.17 7.09 


6.87 


7.43 3.44 


3.67 


1.84 


3.31 


43.36 


1933 


. 2.88 


.94 


2.80 


2.44 


8.38 3.34 


1.56 


2.42 3.38 


1.84 


.33 


1.54 


31.85 


1934 


. .82 


.59 


1.57 


2.46 


1.22 4.01 


4.04 


1.67 8.70 


1.24 


7.36 


1.04 


34.72 


1935 


. 1.97 


2.07 


3.52 


2.12 


6.43 8.21 


2.81 


4.59 3.35 


1.54 


5.50 


1.31 


43.42 


1936... 


. 1.53 


2.04 


.89 


1.87 


1.90 1.03 


1.24 


3.89 8.93 


2.98 


.61 


2.84 


29.75 


1937 


. 3.76 


1.22 


1.49 


4.03 


3.32 3.24 


3.27 


2.85 1.30 


2.13 


1.36 


1.36 


29.33 


1938 


. 4.04 


2.24 


5.08 


3.73 


5.89 5.82 


6.60 


3.33 2.83 


1.21 


2.85 


1.10 


44.72 


1939 


.1.56 


1.75 


4.24 


3.63 


2.97 6.03 


3.07 


5.01 .39 


2.15 


.94 


.37 


32.11 


1940 


. 2.40 


.92 


2.37 


3.79 


1.81 2.59 


1.97 


3.44 .14 


2.21 


1.71 


1.34 


24.69 


1941... 


. 3.08 


.72 


.75 


1.90 


6.76 6.57 


2.46 


2.01 6.35 


14.75 


1.52 


1.54 


48.41 


1942 


. 1.05 


2.59 


2.14 


1.74 


5.26 7.13 


4.84 


1.27 2.44 


.96 


3.57 


3.29 


36.28 


1943 


. 2.14 


1.04 


1.83 


4.22 


5.10 6.99 


4.08 


5.19 .93 


2.72 


2.07 


.39 


36.70 


1944 


. .41 


3.17 


5.07 


5.93 


5.40 3.90 


1.60 


2.51 3.04 


2.35 


2.66 


1.22 


37.26 


1945 


. .88 


1.01 


5.51 


4.45 


7.02 4.66 


1.92 


1.27 6.23 


.67 


1.77 


1.68 


37.07 


1946 


. 2.32 


.49 


3.28 


1.28 


5.36 9.50 


1.00 


4.68 3.34 


2.37 


2.92 


2.08 


38.62 


Aver 


1.81 


1.50 


2.58 


3.12 


4.03 4.56 


3.68 


3.25 4.29 


2.48 


2.26 


1.55 


35.11 



1949] CLIMATE OF ILLINOIS: APPENDIX B 221 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MORRIS, Grundy county 


1912 


.18 


.88 


1.92 


3.44 


3.85 


1.65 4.83 2.59 


2.22 


3.00 


1.93 


1.05 


27.54 


1913 


.1.52 


1.91 


3.42 


2.46 


6.13 


1.62 2.79 2.27 


.81 


2.05 


2.09 


.91 


27.98 


1914 


.1.38 


.39 


2.78 


1.37 


6.01 


2.69 .47 3.68 


4.53 


1.48 


.43 


2.00 


27.21 


1915 


.1.64 


1.51 


.83 


.64 


4.36 


2.49 8.49 5.91 


3.82 


.92 


1.56 


1.44 


33.61 


1916 


. 5.07 


.36 


2.22 


1.14 


3.29 


6.49 .02 1.52 


1.61 


4.12 


2.29 


2.06 


30.19 


1917 


. .98 


.20 


1.81 


2.10 


2.51 


4.45 3.02 1.48 


2.48 


3.29 


.12 


.69 


23.13 


1918 


. 1.97 


2.01 


1.67 


3.74 


4.39 


3.24 2.83 


1.88 


2.98 


2.69 


2.21 




1919 


. .28 


1.61 




3.03 


4.49 


2.42 3.23 1.68 


3.93 


3.87 


3.01 


.73 




1920 


. .97 


.16 


5.69 


4.06 


2.62 


2.73 .75 1.30 


2.05 


.85 


1.24 


2.87 


25.29 


1921 


. 1.23 


.42 


3.65 


4.63 


1.80 


3.34 1.27 6.77 


6.94 


2.44 


2.95 


2.56 


38.00 


1922 


. 1.27 


.81 


4.43 


3.34 


3.47 


.48 3.72 .92 


3.22 


2.47 


2.63 


1.37 


2S.13 


1923 


. 1.08 


1.07 


2.56 


.89 


3.64 


3.56 2.22 3.02 


3.70 


4.71 


1.54 


2.13 


30.12 


1924 


.1.68 


1.52 


2.30 


1.41 


1.91 


6.86 2.86 6.16 


4.29 


.59 


.82 


2.25 


32.65 


1925 


. .57 


1.27 


1.10 


2.90 


1.56 


2.88 1.86 .79 


3.01 


2.51 


2.73 


.93 


22.11 


1926... 


. 1.25 


2.29 


2.10 


3.75 


2.47 


3.57 5.52 1.51 


9.54 


1.47 


4.01 


.74 


38.22 


1927 


. 1.03 


2.11 


2.00 


7.64 


3.90 


5.05 .91 2.62 


5.60 


3.51 




3.00 




1928 


. .48 


1.63 


1.18 


2.32 


2.36 


4.28 5.00 4.66 


3.13 


3.06 


4.35 


2.32 


34.77 


1929 


. 4.08 


.51 


3.85 


5.03 


2.03 


5.75 2.20 2.00 


1.97 


3.29 


2.13 


1.66 


34.50 


1930 


. 2.37 


2.09 


1.38 


4.38 


2.65 


4.28 .74 1.67 


3.27 


2.73 


2.99 


.37 


28.92 


1931... 


.94 


.73 


2.85 


2.27 


5.50 


5.23 1.51 1.92 


4.01 


4.41 


6.36 


2.20 


37.93 


1932 


.2.46 


1.35 


2.29 


1.33 


3.65 


3.10 2.65 5.61 


1.68 


3.63 


1.53 


3.27 


32.55 


1933 


. 2.01 


.99 


2.77 


4.87 


4.74 


.80 2.48 3.26 


2.27 


3.57 


1.10 


.97 


29.83 


1934 


. .65 


.36 


.87 


.91 


.54 


3.42 1.35 3.02 


4.61 


2.07 


4.75 


1.16 


23.71 


1935 


.2.29 


1.73 


3.08 


2.07 


7.33 


3.98 1.75 4.56 


3.16 


.98 


4.95 


1.03 


36.91 


1936 


. 1.30 


1.02 


.66 


2.59 


2.70 


.91 1.15 3.62 


8.35 


2.90 


.96 


3.13 


29.29 


1937 


. 2.62 


1.04 


1.19 


5.67 


1.95 


3.87 1.03 2.11 


.94 


1.94 


.92 


1.09 


24.37 


1938 


. 2.08 


1.87 


3.75 


2.83 


5.92 


4.87 4.58 1.10 


4.12 


1.49 


1.29 


.94 


34.84 


1939 


.1.68 


1.83 


2.16 


3.50 


2.07 


3.88 4.37 1.87 


.45 


2.89 


1.11 


.40 


26.21 


1940 


. .94 


.49 


.80 


2.98 


5.86 


2.19 .02 5.15 


.45 


2.69 


1.74 


1.42 


24.73 


1941 


.1.73 


.72 


1.30 


2.54 


3.48 


2.53 2.18 2.38 


6.76 


8.14 


2.19 


1.59 


35.54 


1942 


. .85 


3.35 


3.02 


2.66 


2.27 


1.74 4.86 6.14 


6.43 


1.27 


3.97 


2.47 


39.03 


1943 


. 1.43 


1.03 


2.24 


4.68 


6.11 


2.69 1.71 3.00 


1.10 


1.30 


.83 


.35 


26.47 


1944 


. .57 


1.69 


5.46 


5.77 


2.36 


3.30 1.89 2.09 


2.20 


1.77 


1.11 


1.08 


29.29 


1945 


. .58 


1.35 


2.43 


4.98 


5.35 


2.33 1.02 4.18 


8.14 


.89 


2.15 


1.47 


34.87 


1946 


.1.80 


.56 


2.73 


.57 


4.72 


3.44 .98 2.05 


1.47 


2.67 


3.49 


2.18 


26.66 


Aver 


1.51 


1.22 


2.43 


3.10 


3.66 


3.32 2.45 3.01 


3.55 


2.63 


2.29 


1.60 


30.77 


MORRISON, Whiteside county 8 


1896 






1.83 


4.91 


4.34 


3 . 30 6 . 55 2 . 99 


5.10 


1.00 


.97 


.39 




1897 


. 2.91 


1.73 


3.33 


2.88 


1.95 


5.27 3.05 .89 


2.16 


.43 


1.40 


1.32 


27.32 


1898 


. 3.01 


1.82 


4.42 


5.11 


4.19 


2.98 1.68 5.61 


2.68 


3.38 


1.20 


.54 


36.62 


1899 


. .30 


1.87 


1.94 


2.73 


7.51 


2.68 2.78 3.18 


.96 


3.39 


1.29 


1.95 


30.58 


1900 


. 1.31 


2.56 


3.12 


3.95 


6.33 


1.61 5.35 5.03 


4.07 


2.75 


1.31 


.23 


37.62 


1901... 


.82 


.63 


2.92 


.49 


2.62 


3.82 6.42 .29 


2.19 


.83 


1.03 


1.36 


23.42 


1902 


. .82 


1.62 


2.46 


1.47 


6.48 


9.60 8.66 5.32 


3.99 


2.78 


2.91 


2.45 


48.56 


1903 


. 1.04 


1.47 


2.41 


4.45 


5.49 


2.02 7.40 5.78 


6.09 


3.57 


1.05 


1.58 


42.35 


1904 


. 2.53 


1.13 


3.86 


3.18 


3.13 


1.13 4.04 5.71 


3.19 


.60 


.02 


2.81 


31.33 


1905 


. .94 


2.89 


3.13 


3.80 


6.71 


4.03 2.52 3.64 


2.81 


3.23 


1.91 


1.48 


37.09 


1906 


. 2.34 


2.24 


3.36 


3.03 


5.27 


4.48 4.10 2.91 


3.85 


1.38 


3.17 


1.55 


37.68 


1907 


. 3.98 


.46 


1.66 


1.74 


6.03 


5.01 9.19 6.43 


5.75 


1.44 


1.42 


1.01 


44.12 


1908 


. .77 


3.10 


3.47 


2.56 


6.84 


4.33 3.67 3.71 


1.01 


.59 


2.83 


.50 


33.38 


1909 


. . 2 . 42 


2.43 


1.60 


6.41 


3.58 


5.57 3.59 3.14 


2.60 


2.22 


4.50 


3.72 


41.78 


1910 


. 1.82 


.76 


.44 


4.09 


3.15 


.40 1.08 2.44 


3.80 


.64 


.91 


.86 


20.39 


1911 


. 1.28 


3.52 


.82 


4.12 


2.67 


2.19 3.06 6.81 


5.57 


2.20 


5.12 


1.90 


39.26 


1912 


. .38 


1.05 


1.74 


2.84 


3.35 


2.62 4.08 4.37 


3.05 


4.23 


1.25 


1.03 


29.99 


1913 


. 1.00 


1.18 


2.43 


1.70 


6.01 


4.17 1.59 2.62 


2.59 


2.76 


1.54 


.19 


27.78 


1914 


,. .76 


.78 


4.60 


1.83 


5.06 


5.41 1.92 .71 


6.10 


3.40 


.20 


1.83 


32.60 


1915 


, . 1.79 


2.59 


.87 


.42 


5.13 


4.59 7.31 3.81 


4.66 


.26 


3.12 


.33 


34.88 


1916... 


. . 4.95 


.90 


1.96 


2.12 


3.94 


5.64 .22 3.06 


3.81 


4.43 


1.51 


2.27 


34.81 


1917 


, . 1 . 14 


.24 


2.09 


3.27 


3.27 


4.58 2.67 .32 


5.95 


3.77 


.12 


.81 


28.23 


1918 


. . 2.60 


2.08 


.77 


2.97 


5.25 


4.13 2.92 3.32 


2.00 


2.28 


1.59 


1.78 


31.69 


1919 


. . .37 


2.46 


2.40 


2.74 


5.52 


2.64 3.86 2.02 


6.12 


6.60 


2.79 


.75 


38.27 


1920 


.60 


.43 


4.13 


5.34 


2.82 


4.96 .91 1.77 


1.36 


1.52 


1.65 


1.07 


26.56 



Data from 1896 thru June, 1901, are for Round Grove, 5 miles south of Morrison. 



222 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MORRISON, Whiteside county, concluded 


1921 


.26 


.56 


5.38 


5.77 


1.85 


3.01 


2.05 5.98 7.78 


2.25 


1.23 


4.13 


40.25 


1922 


. 1.00 


2.00 


4.04 


2.57 


6.69 


.67 


4.91 2.57 1.79 


.37 


2.73 


.73 


30.07 


1923 


. .62 


.43 


4.21 


1.30 


2.40 


5.54 


1.58 2.25 5.10 


1.88 


.92 


2.05 


28.28 


1924 


. 1.06 


.85 


2.83 


1.95 


2.08 


8.26 


3.91 9.66 2.07 


.93 


.77 


1.64 


36.01 


1925 


. .26 


2.19 


1.11 


3.04 


.93 


7.22 


3.07 3.73 5.93 


3.69 


1.26 


1.43 


33.86 


1926 


.72 


1.96 


1.31 


i.fes 


2.96 


5.04 


8.22 3.31 7.65 


1.90 


3.50 


.76 


39.18 


1927 


. 1.06 


1.45 


3.01 


4.79 


4.68 


2.27 


1.25 1.79 5.17 


4.66 


2.44 


1.87 


34.44 


1928 


. .33 


1.26 


1.81 


3.54 


1.45 


4.56 


6.57 5.21 1.47 


4.21 


4.83 


1.79 


37.03 


1929 


. 3.29 


.72 


1.66 


5.03 


1.77 


4.17 


3.79 2.40 3.25 


3.63 


1.32 


.46 


31.49 


1930 


,. 2.27 


1.40 


.96 


4.03 


2.04 


7.04 


.57 2.09 3.13 


3.12 


1.21 


.88 


28.74 


1931 


.63 


.16 


1.79 


1.74 


3.62 


2.36 


1.76 2.28 6.82 


6.01 


4.64 


2.73 


34.54 


1932 


.1.19 


1.11 


2.74 


1.03 


4.12 


3.21 


2.87 4.41 .47 


3.55 


1.04 


2.01 


27.75 


1933 


. 1.73 


.45 


2.68 


2.06 


10.29 


1.56 


3.23 3.41 2.62 


1.44 


.31 


1.06 


30.80 


1934 


. .60 


.89 


1.51 


1.07 


1.02 


3.17 


5.04 4.39 6.35 


1.28 


7.02 


1.68 


34.02 


1935 


. 2.16 


1.30 


2.66 


2.52 


6.94 


7.96 


3.64 4.03 4.89 


1.91 


5.16 


1.04 


44.21 


1936 


. 1.68 


1.84 


1.05 


1.66 


1.49 


4.85 


.83 5.46 8.96 


2.79 


1.36 


2.54 


34.51 


1937 


.4.19 


1.51 


1.34 


5.86 


3.54 


5.47 


1.32 5.63 1.98 


3.70 


.93 


1.19 


36.66 


1938 


. 3.01 


2.20 


2.98 


2.83 


6.27 


6.86 


7.49 3.15 7.21 


1.22 


2.62 


1.11 


46.95 


1939 


. 1.36 


1.83 


1.92 


3.36 


1.67 


3.67 


4.73 4.49 .93 


1.87 


.14 


.33 


26.30 


1940 


. 1.93 


1.21 


1.26 


3.34 


2.23 


3.72 


.96 5.20 1.33 


2.25 


2.21 


1.53 


27.17 


1941 


. 3.18 


.94 


2.39 


4.60 


6.34 


8.85 


2.75 .68 8.82 


6.29 


1.54 


1.32 


47.70 


1942 


. .93 


1.07 


1.78 


.81 


4.71 


4.80 


4.05 4.02 3.45 


1.09 


3.83 


4.12 


34.66 


1943 


.1.59 


1.43 


1.73 


4.22 


4.30 


1.48 


5.06 4.42 1.51 


1.78 


2.08 


.52 


30.12 


1944 


.1.13 


2.10 


4.98 


4.28 


5.60 


4.23 


1 . 59 2 . 87 1 . 97 


1.51 


2.19 


1.50 


33.95 


1945 


. . .85 


1.03 


2.13 


4.30 


6.32 


5.36 


1.88 3.85 6.38 


1.06 


1.75 


2.03 


36.94 


1946 


. 2.90 


.63 


4.30 


1.31 


5.03 


6.34 


1.87 5.28 4.88 


1.38 


3.46 


1.86 


39.24 


Aver 


1.59 


1.45 


2.46 


3.08 


4.25 


4.29 


3.60 3.69 3.99 


2.46 


2.06 


1.49 


34.41 


MOUNT 


CARROLL 


, Carroll county" 










1887... 










1.89 


1.89 


3.81 3.68 4.76 


2.34 


1.64 


3.63 




1888 


. 1.39 


1.26 


4.04 


1.52 


6.46 


2.72 


4.96 2.91 1.24 


2.40 


3.13 


3.02 


35.05 


1889 


.1.66 


1.17 


1.49 


3.87 


3.55 


3.17 


6.42 .38 4.71 


1.02 


1.10 


2.63 


31.17 


1890 


. 2.76 


1.61 


2.13 




3.71 


12.32 


.78 2.96 1.36 


5.43 


1.87 


.81 




1891... 


.1.59 


1.48 


2.86 


3.20 


3.22 


3.18 


4 . 39 2 . 63 1 . 84 


1.58 


3.71 


2.06 


31.74 


1892 


. 2.13 


1.83 


2.97 


6.05 


9.29 


9.57 












1895 










3.78 


1.60 


4.28 1.61 1.70 


.86 


2.02 


1.41 




1896 


.49 


1.02 


1.21 


5.05 


7.92 


2.92 


5.06 3.23 4.78 


1.97 


.83 


.95 


35.43 


1897 


. 2.48 


.89 


3.20 


2.67 


1.24 


5.58 


1.06 .59 1.54 


.39 


1.79 


1.46 


22.89 


1898 


. 1.85 


1.52 


2.66 


2.76 


3.87 


2.12 


2.00 7.23 3.66 


3.45 


1.07 


.34 


32.53 


1899 


. .27 


.20 


1.31 


2.12 


7.74 


2.72 


3.66 1.67 1.33 


2.67 


1.75 


1.73 


27.17 


1900 


. 1.48 


2.35 


1.51 


2.36 


4.23 


1.91 


6.17 4.46 2.87 


2.32 


1.88 


.72 


32.26 


1901 


.90 


70 


2.75 


.66 


2.72 


1.87 


1.15 .27 2.58 


1.39 


1.06 


1.26 


17.31 


1902 


. .46 


1.27 


1.44 


2.65 


7.14 


10.51 


9.79 2.26 5.63 


3.08 


4.53 


2.78 


51.54 


1903 


. 1.06 


1.90 


2.94 


4.02 


5.05 


1.88 


9.09 6.26 5.64 


2.02 


1.06 


1.71 


42.63 


1904 






2.68 


3.08 


3.37 


1 12 


2.94 5.03 7 49 


1 20 


17 


2 65 




1905 


. .57 


1.26 


3.06 


2.41 


4.06 


3.15 


4.01 7.90 2.62 


4.29 


2.16 


.96 


36.45 


1906... 


. 2.60 


1.79 


2.44 


2.17 


4.18 


5.24 


4.32 6.05 3.70 


1.95 


3.48 


1.71 


39.63 


1907 


.2.67 


.22 


1.51 


2.50 


3.23 


4.48 


3.72 5.13 6.20 


1.42 


1.41 


.93 


33.42 


1908 


. .62 


1.94 


3.02 


2.91 


6.14 


5.13 


6.67 2.69 .89 


1.16 


3.02 


.49 


34.68 


1909 


. 3.58 


1.67 


1.14 


7.23 


2.46 


6.40 


1.53 1.92 1.81 


1.64 


4.37 


2.57 


36.32 


1910...... 


.1.39 


.40 


.28 


3.01 


3.31 


.71 


1.34 3.26 2.37 


.66 


.71 


.40 


17.84 


1911 


.46 


2.59 


.71 


4.48 


4.58 


3.81 


3.42 12.19 6.89 


1.45 


3.98 


1.49 


46.05 


1912 


. .40 


.96 


1.13 


1.77 


3.01 


2.47 


5.83 6.13 3.62 


4.35 


1.72 


1.58 


32.97 


1913 


. .91 


.68 


1.67 


1.91 


6.94 


1.62 


2.08 5.56 2.86 


3.61 


1.32 


.51 


29.67 


1914 


. .87 


.39 


3.15 


1.55 


3.97 


5.00 


1.47 .79 8.44 


2.53 


.20 


1.72 


30.08 


1915 


1.38 


2.10 


.57 


.10 


7.65 


3.70 


9.09 3.08 5.30 


.51 


3.29 


.41 


37.18 



Data prior to May, 1916, are for the Lanark station, 8 miles northwest of Lanark and the same 
distance northeast of Mount Carroll. 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



223 



Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MOUNT 


CARROLL, Carroll county, 


concluded 


1916.. . 


. 3.40 


.49 


1.84 


. 4.43 


6.11 .93 


1.40 


5.82 




1.49 






1917 


. 2.05 


.30 


2.11 


3.22 2.77 


5.32 .93 


1.25 


3.81 


2.78 


.16 


.81 


25.51 


1918 


. 2.89 


2.23 


1.23 


2.85 5.51 


4.32 3.51 


4.58 


2.11 


3.85 


2.36 


2.30 


37.74 


1919 


. .53 


3.10 


4.12 


3 . 75 5 . 89 


5.52 4.07 


2.65 


7.74 


7.43 


3.36 


1.35 


49.51 


1920 


. 1.41 






.... 3 . 54 


3.24 .92 




1.16 


1.42 


2 20 






1921 


15 


28 


3 27 


4 94 2 31 


3 04 94 


4 27 




3 24 


1 20 


3 18 




1922 


. .98 


1.52 


2.17 


2 . 89 5 . 00 


.33 6.00 


1.56 


2.72 


.13 


2.73 


1.21 


27.24 


1923 


. .74 


.43 


3.34 


1 . 32 2 . 24 


4.16 2.72 


4.02 


4.32 


2.06 


.94 


2.19 


28.48 


1924 


.1.28 


1.57 


2.15 


2.21 1.78 


6.87 3.10 


9.52 


2.68 


.55 


1.35 


1.71 


34.77 


1925 


. .29 


2.62 


1.22 


3.89 1.30 


6.89 2.56 


2.39 


6.25 


3.06 


1.56 


1.91 


33.94 


1926... 


.97 


2.27 


1.69 


1.57 3.72 


7.98 6.08 


6.77 


6.69 


2.70 


3.49 


1.06 


44.99 


1927 


. .92 


1.46 


3.08 


5.88 5.95 


2.84 .53 


2.15 : 


10.40 


5.70 


2.78 


1.76 


43.45 


1928 


. .07 


1.54 


2.19 


1.84 1.55 


5.09 2.77 


6.03 


1.02 


4.58 


4.62 


1.82 


33.12 


1929 


.3.34 


.98 


2.39 


5.10 1.83 


3.38 1.28 


3.16 


3.44 


3.70 


1.50 


.61 


30.71 


1930 


. 1.73 


1.45 


.80 


4.96 3.20 


8.13 .80 


4.34 


2.44 


2.43 


1.16 


1.17 


32.61 


1931 


.95 


.34 


2.18 


1.61 4.13 


3.99 1.39 


2.84 


3.71 


7.14 


6.06 


2.99 


37.33 


1932 


.1.29 


.67 


3.05 


1 . 36 2 . 56 


5.25 2.27 


4.87 


.94 


3.43 


1.12 


2.20 


29.03 


1933 


.1.36 


.78 


4.05 


1.96 9.89 


2.41 6.71 


1.81 


3.07 


1.15 


.21 


1.23 


34.63 


1934 


. .69 


.63 


.92 


.78 .85 


2.33 4.01 


1.57 


6.02 


1.26 


9.45 


1.57 


30.08 


1935 


. 2.29 


1.36 


1.83 


2.34 5.78 


5.76 4.47 


1.91 


3.48 


1.70 


4.28 


.96 


36.16 


1936 


.1.18 


2.20 


.97 


1.53 1.28 


4.81 1.14 


4.95 


7.34 


2.69 


.55 


2.91 


31.55 


1937 


. 4.08 


1.66 


1.56 


4.62 3.58 


8.57 .94 


2.77 


1.05 


2.92 


.84 


1.43 


34.02 


1938 


. 3.13 


1.77 


3.11 


1 . 88 5 . 74 


7.43 8.07 


6.78 


6.47 


1.26 


2.61 


1.04 


49.29 


1939 


.1.90 


2.43 


1.44 


4.23 1.81 


4.13 2.80 


3.9L 


.72 


1.69 


.53 


.35 


25.94 


1940 


. 1.76 


1.11 


1.05 


2.90 2.10 


6.65 2.63 


4.64 


1.47 


2.91 


2.11 


2.00 


31.33 


1941 


. 2.58 


1.14 


1.90 


3.07 4.60 


6.54 3.49 


1.56 


8.63 


5.33 


1.78 


1.77 


42.39 


1942 


. .98 


1.15 


.96 


1.20 4.50 


4.21 2.68 


3.22 


7.03 


1.11 


2.34 


3.39 


32.77 


1943 


. 1.94 


.86 


2.24 


4.04 5.21 


3.91 4.64 


4.53 


2.67 


2.12 


1.80 


.57 


34.53 


1944 


.1.53 


1.99 


3.91 


4.23 6.35 


6.91 2.89 


2.62 


2.21 


1.05 


3.51 


2.22 


39.42 


1945 


. 1.00 


1.11 


1.86 


3.36 6.47 


5.47 1.21 


2.90 


4.51 


.87 


1.55 


1.77 


32.08 


1946 


.2.55 


1.70 


3.60 


.78 3.51 


5.36 1.02 


3.84 


4.57 


1.68 


3.76 


1.64 


34.01 


Aver 


.1.53 


1.34 


2.15 


2.91 4.21 


4.55 3.45 


3.73 


3.93 


2.46 


2.22 


1.62 


34.10 


OREGON, Ogle county 


1909 . . . 










45 


4 73 


2 79 


1 00 


5 07 


3 68 




1910 


. 1.72 


.80 


T 


3.74 4.65 


.20 .95 


2.54 


2.20 


.72 


1.21 


1.40 


20.13 


1911 


. 1.39 


2.79 


.77 


6.48 1.67 


5.61 1.27 


9.74 


7.57 


2.58 


5.21 


2.45 


47.53 


1912 


. .66 


.97 


1.25 


3.52 2.44 


3 . 36 4 . 39 


5.96 


4.18 


5.36 


1.48 


1.41 


34.98 


1913 


. .98 


1.97 


2.37 


1.59 5.19 


2.16 2.96 


3.58 


2.76 


3.99 


2.37 


.63 


30.55 


1914 


.1.29 


1.16 


2.06 


1.11 3.70 


3.52 2.20 


2.78 


1.72 


2.23 


.46 


2.74 


24.97 


1915 


. 1.83 


2.72 


.95 


.60 7.23 


5.57 11.21 


2.55 


5.37 


.69 


2.60 


.55 


41.87 


1916... 




.56 


2.51 


1.81 2.99 


5.90 .70 


2.79 


5.06 


4.71 


1.68 


2.40 




1917 


.1.16 


.41 


2.52 


3.61 3.78 


4.34 .72 


.51 


2.91 


5.54 


.16 


.53 


26.19 


1918 


.2.57 


2.15 


1.12 


2.73 3.83 


1.95 2.59 


3.48 


2.50 


2.24 


1.33 


2.48 


28.97 


1919 


. .30 


2.43 


4.30 


3.37 5.43 


3.50 2.08 


1.92 


5.22 


5.46 


2.63 


.63 


37.27 


1920 


. .62 


.32 


6.13 


3 . 96 2 . 78 


3.00 .39 


1.87 


1.60 


1.54 


1.34 


1.70 


25.25 


1921... 


.23 


.33 


5.60 


5.85 2.28 


2.53 1.12 


4.58 


7.39 


3.55 


1.81 


4.09 


39.36 


1922 


. 1.05 


1.77 


3.95 


3.46 5.29 


.30 7.21 


.99 


2.41 


.59 


2.55 


1.25 


30.82 


1923 


. .65 


.21 




1.48 1.77 


4 . 73 3 . 33 


3.09 


2.96 


3.03 




2.49 




1924 


. 1.37 


1.03 


3.09 


2.16 1.86 


6.59 3.74 


7.76 


2.07 


.93 


.58 


1.51 


32.69 


1925 


. .29 


2.87 


1.45 


2.78 1.34 


6.62 5.12 


1.39 


6.06 


3.67 


1.37 


1.37 


34.33 


1926... 


.75 


3.32 


1.10 


2.03 2.15 


5.94 5.91 


3.09 


8.23 


2.18 


3.87 


.82 


39.39 


1927 


. .76 


.88 


2.29 


6.35 6.69 


2.29 .13 


1.12 


4.82 


4.09 


2.82 


1.63 


33.87 


1928 


. .66 








7 . 86 2.43 


4.84 


1.42 


3.01 


5.31 






1929 






2 36 


2 40 


2 25 


2 47 


3 68 


3 88 


1 21 


.86 




1930 


.1.59 


1.60 


.69 


3.88 2.08 


5.91 .66 


3.18 


3.64 


2.77 


1.23 


.89 


28.12 


1931... 


.54 


.16 


1.32 


1.54 4.14 


4.50 1.95 


2.50 


6.25 


5.55 


4.59 


2.16 


35.20 


1932 


. 1.01 


.42 


1.98 


.89 3.82 


5.47 2.17 


4.42 


2.30 


3.94 


.93 


1.56 


28.91 


1933 


. 1.41 


.37 


1.96 


3.64 8.30 


2.00 3.67 


1.18 


2.28 


1.89 


.28 


.94 


27.92 


1934 


. .50 


.26 


.83 


1.40 .83 


2 . 69 3 . 87 


2.48 


4.95 


1.20 


5.45 


1.35 


25.81 


1935 


.1.37 


.73 


1.56 


2.63 5.20 


6.68 4.36 


7.19 




1.61 


5.70 


.80 





224 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


OREGON, Ogle county, concluded 


1936 


.94 


1.08 


.16 


1.15 


1.27 


4 3?, 


.69 4.86 9.62 


2.86 


1.60 


4.16 


32.71 


1937 


. 4.09 


1.56 


1.21 


4.64 


2.54 


5 79. 


.78 2.78 .68 


2.97 


1.30 


.81 


29.08 


1938 


. 3.21 


1.58 


3.79 


2.04 


4.77 


8.97 


5.43 4.43 5.96 


.78 


1.60 


1.26 


43.82 


1939 


. 2.57 


1.64 


1.15 


2.95 


2.62 


4 <W 


2.12 3.29 .67 


2.58 


.55 


.02 


24.25 


1940 


. .97 


.94 


1.24 


3.25 


2.83 


ft OT 


2.84 10.51 .71 


2.44 


1.52 


1.80 


34.27 


1941 


. 2.91 


1.01 


2.00 


2. '16 


4.10 


3 10 


1.92 1.44 7.46 


6.34 


1.98 


1.16 


35.58 


1942 


. .70 


.81 


1.73 


.94 


4.13 


5 ft 


2.69 3.51 3.81 


1.98 


3.26 


2.66 


31.47 


1943 


.1.52 


.97 


1.72 


4.63 


4.54 


3 94 


2.20 3.34 .92 


1.52 


1.97 


.42 


27.69 


1944 


.1.34 


2.57 


3.99 


3.20 


5.83 


3 91 


2.36 5.36 2.58 


.65 


2.47 


.98 


35.24 


1945 


. .52 


1.19 


1.60 


3.52 


5.96 


ft 11 


1.77 2.08 4.81 


.91 


2.61 


1.75 


31.83 


1946 


. 2.81 


.45 


2.93 


.68 


5.35 


?, 85 


.21 5.24 2.41 


1.77 


2.71 


1.40 


28.81 


Aver 


.1.32 


1.26 


2.11 


2.85 


3.77 


4 30 


2.65 3.67 3.84 


2.70 


2.29 


1 59 


32.35 


OTTAWA 


, La 


Salle county 










1856 


. 1.90 


.43 


.14 


1.36 


6.20 


?! 11 


2.71 1.54 2.38 


2.86 


3.64 


4.82 


30.09 


1857 


. .46 


4.45 


3.06 


1.41 


3.65 


3 95 


3.97 6.10 .89 


2.68 


2.96 


1.12 


34.70 


1858 


. 1.65 


3.15 


2.98 


4.55 


8.36 


6.57 


4.82 2.37 3.55 


3.97 


2.35 


2.55 


46.87 


1859 


. 1.71 


.86 


5.24 


4.08 


3.12 


1 fix 


.73 3.44 1.66 


2.34 


2.09 


.94 


27.89 


1860 


. 2.66 


1.59 


.70 


1.49 


2.20 


?, 54 


2.89 .79 1.88 


.40 


4.03 


5.90 


27.07 


1861 


. 1.22 


1.95 


2.54 


4.97 


3.60 


4 64 


5.23 2.41 5.17 


3.57 


1.44 


2.15 


38.89 


1862 


. 5.80 


1.29 


4.16 


4.85 


3.61 


ft 61 


8.92 6.82 7.55 


2.49 


2.48 


2.13 


55.71 


1863 




3.29 


3.26 


3.26 


3.64 




3.11 2.74 


4.23 


1.78 


1.40 




1864 


. 2.43 


1.64 


2.70 


3.64 


1.79 


1.52 


2.94 1.85 2.58 


1.66 


3.29 


3.49 


29.53 


1865 


. .45 


3.99 


3.15 


5.48 




ft 17 


5.01 5.50 3.89 


1.84 


.49 


.59 




1866 


. 2.85 


2.49 


1.97 


1.62 


2.16 


1 57 


5.73 3.62 4.72 


2.16 


.90 


2.97 


32.76 


1867 


. 1.28 


4.55 


1.42 


1.72 


4.64 


a 7:-t 


4.23 2.41 .11 


.92 




1.66 




1868 


. 1.07 


1.40 


5.28 


2.60 


7.64 


? ?i 


1.96 3.19 3.48 










1869 




1.95 


1.38 


4.58 


7.45 


6.27 


4 . 40 4 . 24 


1.48 


1.88 


1 63 




1870 


. 5.28 


.90 


3.68 


.85 


1.15 


1 39 


1 . 90 2 . 26 3 . 63 


4.33 


1.42 






* 
























1886 
















1.60 


.60 


.43 




1887 


. 1.82 


3.25 


.64 


.39 


1.08 


1 1? 


1.17 3.06 2.77 


2.80 


2.17 


3.33 


23.60 


1888 


. 1.80 


1.88 


3.70 


1.23 


5.39 


?! 01 


3.58 1.77 .60 


2.71 


3.38 


2.22 


30.27 


1889 


. 1.91 


1.16 


1.77 


2.44 


4.36 


4 61 


5.67 2.00 3.92 


1.51 


3.12 


1.80 


34.27 


1890 


. 1.94 


1.40 


3.33 


1.87 


3.99 


6 S7 


.34 2.72 2.48 


3.89 


2.06 


.27 


31.16 


1891 


. 2.86 


2.28 


2.56 


3.96 


1.84 


3 99 


4.45 5.11 1.27 


.56 


4.75 


1.74 


35.37 


1892 


. 1.45 


1.52 


2.70 


3.56 


13.25 


9 XO 


4.92 .81 2.56 


.63 


2.48 


1.84 


45.52 


1893 


.2.20 


3.03 


3.30 


5.23 


1.95 


? 49 


1.02 .77 2.29 


1.10 


2.18 


2.16 


27.72 


1894 


. 2.38 


1.58 


2.57 


1.51 


4.01 


3 03 


.80 1.75 7.18 


1.63 


2.09 


1.19 


29.72 


1895 


.1.22 


.70 


.82 


2.02 


1.06 


1 0?, 


4.79 2.26 1.47 


1.16 


5.27 


5.77 


27.56 


1896 


.1.37 


1.65 


1.32 


3.38 


4.24 


7, ?.?, 


8.63 2.43 9.38 


.17 


3.43 


.28 


38.50 


1897 


. 5.98 


1.71 


4.47 


1.88 


.99 


6 90 


2.99 .74 1.89 


.46 


4.37 


1.74 


34.12 


1898 


. 5.24 


2.38 


5.21 


3.12 


6.72 


ft 80 


1.30 4.31 5.90 


4.73 


2.88 


1.42 


49.01 


1899 


. .63 


2.10 


3.21 


1.50 


5.08 


1 4?, 


5.70 3.02 2.15 


2.53 


1.46 


2.03 


30.83 


1900 


. 1.60 


4.53 


2.91 


1.53 


5.60 


1 96 


4.53 7.24 2.26 


2.24 


3.16 


.31 


37.87 


1901... 


. 1.76 


2.10 


3.51 


.61 


2.15 


?, 67 


5.47 .81 3.20 


.91 


1.49 


2.09 


26.77 


1902 


. .63 


1.41 


4.89 


2.55 


5.64 1 


51 


10.49 4.40 6.76 


1.87 


4.29 


2.01 


55.45 


1903 


.1.13 


2.35 


3.10 


5.08 


4.19 


3 78 


1.94 4.90 6.03 


1.43 


.46 


1.91 


36.30 


1904 


.2.54 


1.80 


4.87 


3.93 


3.00 


1.89 


5.14 3.58 3.27 


.26 


.08 


1.86 


32.22 


1905 


.1.30 


1.93 


2.09 


5.15 


3.68 


3.39 


1.68 4.12 2.13 


1.87 


2.01 


1.70 


31.05 


1906... 


. 2.07 


2.26 


2.02 


1.63 


2.37 


2.64 


1.45 4.57 5.09 


1.23 


2.63 


1.22 


29.18 


1907 


.5.25 


.15 


2.55 


2.69 


4.84 


2.50 


6.92 4.49 4.94 


1.00 


1.96 


1.79 


39.08 


1908 


. .86 


1.53 


3.87 


3.48 


8.17 


1.77 


3.05 2.03 .35 


.65 


1.79 


.99 


28.54 


1909 


. .98 


3.65 


1.64 


5.19 


2.57 


3.69 


2.95 3.59 4.08 


1.71 


2.57 


3.02 


35.64 


1910 


. 2.78 


.98 


.42 


3.28 


5.28 


1.25 


.67 3.91 6.23 


1.25 


.74 


.98 


27.77 


1911 


. 1.80 


2.13 


1.80 


3.91 


2.64 


1.71 


1.60 6.28 6.88 


2.61 


2.28 


2.15 


35.79 


1912 


. .27 


1.14 


1.17 


3.30 


6.13 


2.09 


3.28 5.68 2.86 


5.26 


2.02 


1.18 


34.38 


1913 


. 1.80 


3.00 


3.87 


2.09 


6.71 


2.36 


2.17 2.98 2.10 


2.70 


1.80 


.59 


32.17 


1914 


. 1.77 


1.10 


2.35 


1.28 


4.06 


2.53 


.66 2.33 2.87 


3.17 


.40 


1.92 


24.44 


1915 


.1.86 


2.13 


1.01 


.75 


5.63 


2.10 


7 . 30 2 . 80 4 . 88 


.86 


1.95 


.82 


32.09 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



225 



Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


OTTAWA 


, La 


Salle county, concluded 


1916... 




.59 


1.92 


.86 


3.90 


7.39 .08 1.05 


1.54 


4.75 


2.48 


1.34 




1917 




.34 








.... 1 . 70 3 . 03 












1918 








2.36 


4.58 


1.87 1.71 4.27 


2.27 


3.18 


2.33 






1919 


.42 


2.02 














2 94 


62 




1920 


. 1.61 


.13 


4.77 


5.79 


3.53 


1 . 92 .89 1 . 15 






1.19 


2 12 




1921 


. .71 


.32 


3.98 


4.27 


2.15 


2.87 1.11 6.38 


6.87 










1922 . . 




.92 


2.91 


2.57 


6.39 


.43 3.21 1.63 


3 37 


2 08 


2 01 


1 32 




1923 




1.30 




1.03 


4.40 


2.47 1.36 3.26 


3.22 


3.72 


1.64 






1924 


. 1.32 


1.59 


2.07 


1.54 


?< 36 


6.40 4.40 11.21 


4.35 


.56 


.60 


1.98 


38.38 


1925 


. .36 


1.71 


.80 


2.72 


1 4 


3.34 1.95 1.08 


2.88 


2.95 


3.00 


.99 


23.24 


1926 


.99 


2.60 


2.60 


3.16 


3 41 


4.11 8.20 2.68 


14.28 


1.38 


4.54 


.61 


48.56 


1927 


. .95 


2.24 


2.28 


7.11 


4 49 


5.01 1.07 6.57 


3.56 


3.40 


4.65 


1.99 


42.32 


1928 


. .38 


1.50 


.99 


2.23 


2.33 


5.10 3.56 3.65 


1.45 


3.01 


4.36 


2.11 


30.67 


1929 


.3.39 


.54 


2.98 


6.57 


?, 16 


4.18 2.78 2.58 


2.39 


2.86 


1.36 


.63 


32.42 


1930 


. 2.01 


2.11 


1.40 


4.42 


1 30 


2.57 .90 .94 


2.45 


2.95 


2.32 


.22 


23.59 


1931 


.70 


.88 


2.49 


2.19 


4 03 


5.18 1.24 3.60 


4.11 


4.64 


4.07 


2.39 


35.52 


1932 


. 2.41 


1.14 


2.34 


1.16 


3.14 


2.29 3.58 6.34 


1.83 


3.89 


.60 


3.16 


31.88 


1933 


.1.84 


1.14 


3.01 


3.42 


5 (V?, 


1.40 1.80 2.30 


2.84 


1.83 


.64 


.92 


26.16 


1934 


. .78 


.50 


.85 


1.02 


.44 


2.87 2.53 2.02 


4.81 


1 37 


4.77 


1.09 


23.05 


1935 


. 2.26 


2.00 


2.75 


1.87 


6.43 


5.53 3.21 6.91 


3.26 


.98 


5.29 


1.16 


41.65 


1936... 


.1.19 


1.14 


1.06 


1.71 


?, 35 


.70 1.07 3.80 


9.16 


2.11 


.90 


3.65 


28.84 


1937 


.2.56 


1.19 


1.20 


5.76 


?: 68 


3.69 1.01 3.22 


.52 


1.90 


.88 


1.36 


25.97 


1938 


.2.69 


2.26 


3.47 


3.81 


4 65 


6.82 5.49 2.83 


5.06 


1.40 


1.42 


.89 


40.79 


1939 


.2.23 


2.39 


3.12 


2.66 


3 55 


5.47 5.77 3.90 


.81 


4.17 


.82 


.41 


35.30 


1940 


. 1.24 


1.03 


1.23 


2.75 


5.19 


2.06 .74 4.84 


.75 


1.98 


2.19 


1.16 


25.16 


1941 


. 2.62 


.97 


2.29 


3.29 


3 . 83 


4.56 2.22 2.79 


6.97 


9.67 


1.71 


1.28 


42.20 


1942 


.1.02 


2.97 


3.91 


2.60 


?< 3? 


2.72 7.41 5.65 


3.91 


1.34 


3.85 


2.79 


40.49 


1943 


. 2.14 


1.20 


1.95 


5.70 


8 33 


3.32 2.74 4.49 


2.33 


1.33 


1.51 


.44 


35.48 


1944 


. .60 


1.93 


5.46 


6.44 


9, 85 


4.11 1.29 2.87 


3.41 


1.21 


.77 


1.28 


32.22 


1945 


.1.15 


1.30 


2.49 


5.49 


6 XI 


3.64 .25 4.58 


8.19 


1.03 


2.79 


2.36 


40.08 


1946 


. 2.38 


.71 


3.28 


.66 


5 54 


4.63 1.42 1.96 


1.73 


3.28 


3.16 


2.39 


31.14 


Aver 


1.88 


1.78 


2.63 


3.02 


4.10 


3.52 3.22 3.45 


3.67 


2.29 


2.33 


1.75 


33.64 


PAWPAW, Lee county 


1912 














2.52 


5.58 


2 20 


1 29 




1913 


. 1.28 


2.20 


3.13 


2.71 


5 37 


2.04 2.72 3.43 


2.65 


2.93 


1.78 


.34 


30.58 


1914 


.1.72 


.69 


2.07 


.92 


5 6'J 


5.98 1.06 1.58 


3.35 


2.59 


.40 


1.95 


27.93 


1915 


. 1.93 


2.43 


.48 


.64 


4.66 


3.39 8.04 2.70 


4.68 


1.32 


2.36 


.46 


33.09 


1916... 


.4.63 


.42 


4.39 


1.52 


3 26 


7.20 .26 2.63 


3.56 


4.60 


1.94 


1.67 


36.08 


1917 


. .98 


.40 


1.81 


3.14 


3 50 


4.36 1.40 1.70 


3.30 


4.26 


.46 


.40 


25.71 


1918 


. 1.81 


1.94 


.59 


3.10 


3.89 


3.14 4.14 4.05 


2.26 


3.53 


2.28 


2.14 


32.87 


1919 


. .39 


2.27 


5.21 


3.54 


3 81 


2.86 3.57 1.28 


4.27 


6.47 


2.57 


.69 


36.93 


1920 


. 1.33 


.19 


5.72 


5.04 


1.94 


.87 .79 1.94 


3.74 


2.48 


1.49 


2.57 


28.10 


1921... 


.63 


.40 


5.69 


5.44 


2.16 


3.07 .68 5.68 


7.06 


2.31 


1.95 


3.89 


38.96 


1922 


.1.29 


.72 


3.48 


1.15 


4 39 


.41 4.35 .35 


3.56 


1.48 


2.00 


1.21 


24.39 


1923 


. .62 


.81 


3.73 


1.21 


2.44 


5.21 2.24 2.39 


6.76 


4.15 


1.29 


1.58 


32.43 


1924 


.1.50 


1.04 


3.01 


1.32 


f, 11 


7.90 2.96 6.59 


3.72 


.78 


1.07 


1.92 


33.92 


1925 


. .61 


1.69 


.94 


2.56 


1 03 


5.65 1.51 .87 


5.18 


3.29 


2.12 


1.31 


26.76 


1926 


. 1.08 


2.74 


1.54 


1.81 


3.09 


3.53 4.31 3.61 


7.55 


2.38 


5.21 


.84 


37.69 


1927 


.1.12 


1.45 


2.63 


6.56 


5 05 


2.29 1.00 2.57 


4.79 


2.57 


4.08 


2.28 


36.39 


1928 


. .57 


1.51 


1.74 


2.56 


1.63 


6.32 5.15 3.56 


2.46 


3.21 


4.95 


2.23 


35.89 


1929 


.3.89 


.61 


3.32 


6.61 


1.75 


6.13 2.22 1.90 


3.43 


3.84 


1.31 


.58 


35.59 


1930 


. 1.95 


1.33 


1.46 


4.52 


1.00 


2.98 1.35 4.92 


6.35 


3.55 


1.68 


.28 


31.37 


1931... 


.71 


.37 


2.19 


1.41 


4.68 


4.29 3.32 2.21 


4.91 


6.83 


4.92 


2.40 


38.27 


1932 


. 1.96 


1.66 


3.15 


.93 


2.63 


3.05 2.45 3.61 


1.44 


3.69 


.96 


3.13 


28.66 


1933 


. 1.77 


.97 


2.18 


2.80 


7.85 


2.08 2.14 2.06 


2.92 


1.58 


.24 






1934 






.83 


1.40 


.45 


4.39 2 68 2 24 


5 29 


1 30 


7 33 


1 32 




1935 


. 1.55 


.96 


2.20 


2.10 


5.15 


5.47 2.13 5.04 


4.57 


2.20 


4.42 


1.32 


37.11 


1936... 


.1.22 


1.35 


.38 


1.72 


3.31 


.52 .60 5.59 


9.01 


2.09 


1.18 


3.46 


30.43 


1937 


. 2.74 


1.88 


1.04 


5.68 


3.04 


5.78 2.02 2.31 


1.51 


2.46 


1.14 


.85 


30.45 


1938 


.4.47 


1.93 


4.02 


2.01 


5.99 


11.07 4.56 2.34 


7.92 


.90 


1.55 


1.16 


47.92 


1939 


. 1.64 


2.52 


1.60 


3.92 


3.98 


5.31 1.91 3.87 


1.00 


3.17 


.81 


.41 


30.14 


1940 


1.31 


1.00 


1.66 


3.15 


4.22 


3.85 1.18 6.72 


.68 


2.20 


1.92 


1.66 


29.55 



226 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PAWPAW, Lee county, concluded 


1941... 


. 2.72 


1.32 


2.47 


3.36 


4.59 


2.76 1.85 


2.57 7.82 


9.74 


1.93 


1.53 


42.66 


1942 


. .82 


1.83 


2.21 


.83 


4.08 


4.44 5.25 


4.81 4.25 


1.17 


3.11 


1.91 


34.71 


1943 


.1.68 


1.06 


1.60 


4.49 


6.53 


2.63 1.99 


2 . 89 1 . 59 


1.79 


1.86 


.17 


28.28 


1944 


. 1.03 


1.29 


4.44 


3.74 


3.94 


3.19 1.66 


2.39 2.81 


1.30 


.94 


1.01 


27.74 


1945 


. .73 


1.18 


3.02 


4.08 


6.71 


5.46 .39 


3.86 7.00 


1.09 


3.30 


2.14 


38.96 


1946 


. 3.08 


.85 


3.77 


.81 


5.14 


4.02 1.20 


4.00 2.05 


2.00 


3.08 


2.40 


32.40 


Aver 


.1.66 


1.30 


2.58 


2.85 


3.79 


4.17 2.44 


3.18 4.17 


3.00 


2.28 


1.54 


32 96 


PONTIAC, 


Livingston 


county 










1887... 


.92 


3.85 


1.11 


1.20 


1.15 


.28 .13 


1.60 1.01 


.93 


.77 


3.20 


16.15 


1888 


.1.40 


1.43 


2.38 


.90 


5.70 


3.85 4.32 


.65 .47 


2.35 


1.37 


1.20 


26.02 


1889 


. 1.39 


.97 


1.53 


1.35 


5.50 


2.45 4.65 


.11 3.80 


1.62 


3.10 


1.65 


28.12 


1890 


. 4.18 


1.20 


3.58 


4.15 


3.65 


5.10 .75 


1.95 .35 


2.61 


1.45 


.30 


29 27 


1903 


.80 


3.23 


2.54 


4.94 


4.36 


1.39 6.35 


2.60 3.62 


2.76 


1.06 


1.98 


35.63 


1904 


. 3.92 


1.84 


5.73 


3.63 


2.67 


1.95 5.37 


2.45 5.79 


.17 


.06 


2.14 


35.72 


1905 


. 1.80 


1.89 


2.17 


3.45 


6.33 


1.70 1.78 


1.82 2.26 


2.53 


2.26 


1.71 


29.70 


1906 


. 3.07 


1.78 


3.28 


2.18 


1.77 


2.35 2.39 


.80 3.56 


1.61 


2.58 


2.62 


27.99 


1907 


.5.62 


.15 


2.74 


3.09 


3.28 


3.00 5.66 


4 . 47 4 . 59 


.61 


2.04 


3.05 


38.30 


1908 


. 1.01 


4.52 


2.90 


4.83 


8.72 


1 . 65 2 . 35 


1 . 25 1 . 53 


.92 


2.61 


1.51 


33.80 


1909 


.2.58 


4.30 


1.81 


5.96 


3.05 


2 . 90 2 . 29 


3.75 2.15 


2.33 


4.00 


3.32 


38.44 


1910 


. 1.78 


.97 


.20 


4.07 


5.04 


2.14 1.25 


4.39 4.10 


1.69 


.82 


1.73 


28.18 


1911... 


. 2.06 


2.13 


2.32 


3.70 


2.26 


2.84 1.52 


2.25 11.81 


2.68 


2.95 


2.20 


38.72 


1912 


. 1.00 


1.60 


2.24 


5.50 


4.96 


2 . 34 2 . 95 


4.32 3.05 


2.26 


2.25 


.69 


33.16 


1913 


. 3.03 


1.85 


5.13 


2.97 


7.54 


2.30 1.13 


3.86 1.81 


5.05 


1.58 


1.24 


37.49 


1914 


.1.70 


1.16 


1.52 


2.75 


3.05 


2.15 .83 


3.02 3.48 


1.57 


.18 


1.89 


23.30 


1915 


. 1.64 


1.67 


1.01 


1.60 


3.69 


2.27 7.81 


6.79 7.56 


.49 


1.46 


1.35 


37.34 


1916... 


. 6.35 


.45 


1.72 


1.10 


4.85 


6.55 .32 


3.20 2.34 


3.43 


1.95 


2.50 


34.76 


1917 


. 2.00 


.64 


1.72 


3.76 


2.01 


6.04 2.41 


2.25 3.55 


2.78 


.11 


1.33 


28.60 


1918 


. 2.65 


1.66 


1.09 


5.82 


5.22 


3.79 3.73 


3.85 2.00 


3.79 


1.96 


2.57 


38.13 


1919 


. .26 


1.91 


3.77 


1.83 


5.26 


2.61 1.85 


2.46 3.07 


2.91 


3.18 


.45 


29.56 


1920 


.1.90 


.30 


4.05 


7.34 


2.50 


1.40 1.05 


.40 .82 


1.20 


1.20 


2.34 


24.50 


1921... 


. 1.46 


.20 


3.92 


4.57 


1.37 


2.92 2.45 


3.15 7.42 


2.77 


3.35 


1.75 


35.33 


1922 


. 1.99 


1.35 


5.83 


4.19 


3.43 


.98 2.47 


1 . 73 1 . 32 


2.84 


3.08 


1.07 


30.28 


1923 


.1.33 


1.00 


6.08 


.87 


5.70 


1.86 .46 


2 . 92 2 . 35 


4.80 


1.75 


3.04 


32.16 


1924 


.1.34 


1.81 


1.66 


2.90 


2.01 


6.76 2.77 


4 . 54 3 . 56 


.96 


1.23 


3.08 


32.62 


1925 


. .55 


1.65 


2.42 


1.46 


.56 


2.58 1.33 


1.45 3.45 


2.61 


2.58 


1.03 


21.67 


1926... 


.1.52 


2.33 


2.55 


3.12 


3.30 


3.19 5.78 


5.33 10.95 


3.13 


4.22 


1.33 


46.75 


1927 


.2.36 


2.94 


2.82 


7.42 


5.83 


2.97 3.91 


2.02 6.33 


2.72 


4.62 


3.49 


47.43 


1928 


. .52 


1.79 


1.19 


2.71 


1.57 


3.33 3.14 


1.72 1.10 


3.74 


3.08 


1.60 


25.49 


1929 


.4.26 


.95 


3.48 


4.52 


3.41 


4.96 3.38 


1.91 1.33 


3.41 


2.57 


1.48 


35.66 


1930 


.2.52 


1.43 


1.66 


4.27 


1.18 


4.41 .48 


2.03 .91 


1.19 


2.10 


.45 


22.63 


1931... 


.48 


.90 


1.86 


2.93 


4.55 


2.82 4.27 


4 . 22 3 . 82 


2.98 


4.33 


2.52 


35.68 


1932 


.2.20 


1.45 


2.47 


1.07 


2.62 


2.61 2.59 


3.61 2.01 


4.02 


1.00 


4.73 


30.38 


1933 


. 2.15 


1.46 


3.44 


4.54 


7.47 


4.12 .88 


2.50 7.90 


3.69 


.47 


1.04 


39.66 


1934 


. .86 


.70 


1.99 


1.41 


.45 


1.65 2.33 


3.76 5 . 57 


2.39 


4.20 


1.37 


26.68 


1935 


. 2.53 


2.61 


4.04 


2.85 


7.23 


5.19 4.40 


3.28 2.37 


.93 


5.67 


1.14 


42.24 


1936 


. 1.52 


1.45 


1.16 


1.98 


1.70 


.31 1.42 


3.66 7.22 


2.51 


1.56 


2.76 


27.25 


1937 


. 3.49 


.95 


1.41 


5.20 


3.88 


4.66 1.44 


1 . 20 .62 


3.18 


1.14 


1.12 


28.29 


1938 


. 1.61 


2.90 


2.69 


2.80 


5.16 


4 . 79 5 . 27 


2.44 3.49 


1.02 


1.25 


1.15 


34.57 


1939 


. 3.91 


2.86 


2.59 


4.80 


1.74 


6.55 5.10 


2 . 33 .20 


2.81 


1.20 


1.27 


35.36 


1940 


. .91 


1.23 


2.38 


3.45 


3.82 


2.11 .26 


5.01 .81 


3.00 


1.67 


.93 


25.58 


1941... 


.2.12 


1.30 


1.35 


3.16 


3.60 


3.45 2.78 


2.23 3.33 


11.58 


2.30 


1.45 


38.65 


1942 


. .60 


4.51 


2.51 


3.53 


3.81 


4.60 3.45 


5.60 2.87 


1.74 


5.94 


3.15 


42.31 


1943 


. 2.24 


1.10 


2.96 


6.32 


8.60 


2.68 1.39 


6.97 2.30 


1.03 


1.15 


.38 


37.12 


1944 


. .70 


1.70 


5.50 


8.90 


5.78 


2.75 1.69 


4.18 3.19 


2.54 


1.17 


1.30 


39.40 


1945 


. .74 


1.49 


3.26 


4.32 


5.47 


2.41 .90 


1.54 7.10 


1.55 


1.99 


2.39 


33.16 


1946 


. 1.31 


1.10 


2.50 


2.03 


5.53 


7.38 3.97 


1.49 .95 


3.09 


3.39 


2.45 


34.19 


Aver 


. 2.01 


1.72 


2.67 


3.57 


4.01 


3.19 2.69 


2.90 3.44 


2.55 


2.21 


1.84 


32.80 



1949] CLIMATE OF ILLINOIS: APPENDIX B 227 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ROCKFORD, Winnebago county 


1872... 




















.76 




1873 


. 1.80 




1.56 


1.50 


4 . 75 3 . 00 


1 . 60 1 . 65 


1.55 


2 70 


1 60 


2 25 




1874 


.4.87 


.83 


1.01 


1.23 


1.09 3.39 


.90 1.19 


5.97 


1.10 


1.73 


.59 


23.90 


1875 


. .75 


1.56 


.59 


3.06 


2.25 6.21 


5.96 2.15 


3.56 


2.34 


.51 


2.57 


31.51 


1876... 


.3.46 


2.91 


2.84 


3.83 


6.06 4.25 


5.80 2.42 


4.71 


1.50 


4.37 


.41 


42.56 


1877 


. 3.06 


.30 


5.53 


3.99 


2.20 4.32 


1.96 4.04 


.61 


6.15 


3.90 


2.00 


38.06 


1878 


. .56 


1.52 


3.63 


3.44 


4.20 3.48 


5.75 1 . 99 


.78 


6.03 


.78 


1.48 


33.64 


1879 


. .71 


1.32 


.91 


2.76 


2.19 3.63 


6.98 3.06 


.40 


1.93 


5.35 


1.18 


30.42 


1880 


. 3.17 


1.92 


2.70 


4.53 


4.11 3.88 


1.74 2.98 


3.51 


1.20 


1.73 


.60 


32.07 


1881... 


. 1.71 


6.50 


3.49 


1.38 


2.39 6.44 


7.72 .33 


3.72 


5.37 


2.17 


2.99. 


44.21 


1882 


.1.19 


2.01 


3.54 


5.15 


3.42 5.69 


2.96 3.82 


.93 


3.32 


2.24 


2.49 


36.76 


1883 


. 1.98 


3.76 


.57 


1.96 


6.39 4.21 


3 . 69 1 . 50 


.92 


6.66 


3.87 


1.58 


37.09 


1884 


.1.42 


1.91 


2.88 


3.45 


3.43 6.16 


6.13 3.68 


3.85 


6.24 


1.99 


6.51 


47.65 


1885 


. 2.39 


2.50 


.26 


4.33 


2.39 5.47 


4.50 9.18 


4.64 


3.95 


1.96 


3.57 


45.14 


1886 


. 5.88 


3.40 


4.55 


4.36 


4.93 2.74 


.35 8.41 


2.25 


4.03 


1.61 


1.65 


44.16 


1887 


. 4.21 


6.44 


1.25 


.92 


1.98 .89 


3.12 4.42 


3.75 


2.09 


1.39 


5.01 


35.47 


1888 


. 1.72 


1.30 


3.03 


2.54 


6.25 1.27 


4.90 1.99 


1.05 


1.80 


2.39 


2.58 


30.82 


1889 


. 2.96 


1.51 


1.32 


2.88 


6.64 3.93 


2.02 .74 


1.95 


.67 


2.38 


2.88 


29.88 


1890 


. 2.81 


2.69 


2.42 


3.76 


5.28 12.33 


.83 3.38 


.60 


5.98 


2.23 


1.60 


43.91 


1891... 


. 2.72 


1.65 


3.21 


4.83 


2.75 4.87 


2.27 1.44 


.75 


1.53 


3.67 


1.30 


30.99 


1892 


. 3.72 


1.95 


1.61 


4.71 


9.18 14.16 


4 . 32 7 . 26 


1.61 


.78 


2.53 


2.96 


54.79 


1893 


.3.39 


2.45 


3.21 


5.38 


3.09 4.51 


3.49 1.13 


2.82 


3.60 


1.71 


1.71 


36.49 


1894 


. 1.47 


2.06 


3.26 


















1895 


.2.27 


.93 


2.53 


1.51 


3.54 1.93 


2.53 3.06 


2.77 


i.& 


3.34 


2.59 


28.32 


1896... 


.90 


2.40 


2.02 


4.08 


6.31 2.34 


4.36 3.75 


8.33 


.85 


3.05 


.90 


39.29 


1897 


.4.72 


1.45 


4.90 


3.81 


1.12 4.09 


2.71 .90 


1.18 


.68 


1.73 


1.62 


28.91 


1898 


. 2.97 


2.52 


4.21 


2.16 


4.36 2.79 


2.32 5.46 












1899 








1.61 


6.91 2.13 


5 . 69 2 . 34 


1.61 










1900 








2.74 


2.73 


9 . 22 


3.70 










1901... 










2.14 3.72 


2.75 1.16 


2.85 










1902 








.84 


8.30 7.74 


5.76 1.14 


6.43 










1903 








3.95 


2 . 53 1 . 62 


5 . 49 7 . 59 


5.39 










1904 . . . 








2.20 


3 . 38 1 . 50 


4 . 99 4 . 06 


3.39 










1905 








2.70 


6.13 3.55 


4.24 3.75 


1.16 


3.90 


2.33 


.93 




1906... 


. 3.29 


2.28 


3.35 


1.49 


2.42 4.37 


3.91 3.23 


4.69 


2.19 


3.39 


1.70 


36.31 


1907 


. 3.18 


.69 


1.90 


2.78 


2.96 4.54 


4 . 63 2 . 80 


4.84 


.82 


.98 


.17 


30.29 


1908 


.1.32 


2.40 


4.54 


3.34 


6.58 3.23 


3 . 67 1 . 87 


.92 


.89 


2.39 


.79 


31.94 


1909 


. 2.79 


2.31 


1.13 


6.01 


4.78 3.81 


.68 7 . 69 


3.41 


.75 


4.15 


3.48 


40.99 


1910 


. 2.06 


.80 


.27 


3.50 


4.76 .72 


1.91 3.66 


2.12 


1.03 


1.44 


.60 


22.87 


1911... 


.74 


2.95 


.55 


5.57 


2.98 2.39 


.81 8.70 


6.56 


2.86 


4.30 


1.91 


40.32 


1912 


. .62 


1.82 


1.56 


2.55 


3.94 3.78 


8.21 5.56 


3.53 


4.98 


1.34 


1.14 


39.03 


1913 


.1.30 


1.74 


2.80 


1.53 


5 . 70 1 . 59 


5 . 85 2 . 78 


3.67 


3.13 


1.52 


.55 


32.16 


1914 


.1.27 


1.15 


4.11 


1.32 


6.05 7.37 


.84 2 . 25 


3.92 


1.75 


.56 


2.16 


32.75 


1915 


. 1.78 


2.88 


1.01 


.28 


7.02 4.68 


5.85 2.05 


5.57 


1.27 


2.85 


.52 


35.76 


1916 


.4.33 


.81 


3.45 


1.34 


4.58 7.81 


.48 1.98 


7.00 


4.25 


1.66 


1.72 


39.41 


1917 


.1.12 


.50 


1.91 


2.50 


4.47 4.18 


1.61 .45 


3.24 


5.21 


.09 


.61 


25.89 


1918 


.3.27 


2.40 


1.25 


3.17 


4 . 44 1 . 62 


1.53 3.19 


1.60 


2. ,73 


1.61 


2.37 


29.18 


1919 


. .66 


2.39 


3.70 


4.21 


3.74 1.86 


5.40 3.00 


6.14 


6.60 


3.66 


1.26 


42.62 


1920 


. 1.39 


66 


4.85 


2.76 




94 2.26 


.77 


1.64 


.90 


2 03 




1921... 


.12 


.53 


3.64 


6.29 


1 . 34 3 . 36 


.72 4.21 


6.27 


4.27 


1.99 


3.56 


36.30 


1922 


. .87 


1.68 


3.75 


2.81 


3.68 .34 


5.28 .21 


1.50 


.42 


3.13 


1.40 


25.07 


1923 


. .91 


.53 


4.99 


1.38 


1.29 4.76 


1.67 4.08 


3.44 


3.68 


.90 


2.31 


29.94 


1924 


. 1.27 


1.29 


2 46 


2 52 


1 47 6 79 


2 08 6 69 


2.16 


.33 


1 00 






1925 


. .34 


2.68 


..75 


2.67 


1.45 3.21 


4 . 28 3 . 20 


5.91 


3.25 


1.43 


1.31 


30.48 


1926... 


. 1.01 


2.58 


1.71 


1.74 


2.31 10.64 


6.90 2.97 


5.61 


2.91 


4.09 


.83 


43.30 


1927 


. 1.09 


.84 


1.55 


7.12 


4 . 78 1 . 88 


.74 1 . 20 


7.59 


3.91 


2.28 


1.81 


34.79 


1928 


. .46 


.81 


2.49 


3.39 


1.22 6.50 


2 . 35 4 . 58 


1.53 


4.13 


5.83 


1.82 


35.11 


1929 


. 3.30 


.68 


1.93 


6.20 


2.70 5 . 00 


2 . 77 1 . 60 


4.97 


3.39 


1.17 


.58 


34.29 


1930 


.2.02 


1.20 


1.86 


3.19 


2.41 4.31 


2 . 70 1 . 08 


4.61 


3.40 


1.22 


.53 


28.53 



228 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS : Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ROCKFORD 


, Wmnebago county, 


concluded 


1931... 


.71 


.39 


3.09 


1.89 


3.66 3.57 4.10 


2.78 


4.54 


3.96 


5.37 


2.32 


36.38 


1932 


. 1.90 


.41 


3.52 


1.22 


2.23 3.01 2.39 


7, 51 


2.05 


5.76 


.79 


1.82 


27.61 


1933 


.1.33 


.75 


2.98 


2.09 


8.88 2.34 6.30 


1 3X 


3.06 


1.44 


.48 


.56 


31.59 


1934 


. .79 


.34 


.85 


1.60 


.68 2.49 3.40 


2.54 


4.46 


1.19 


7.88 


1.39 


27.61 


1935 


. 2.52 


1.90 


2.09 


2.21 


5.95 6.77 6.33 


6 M 


2.69 


1.66 


4.39 


.95 


43.69 


1936... 


.1.72 


1.97 


.43 


1 75 


1.06 3.82 .66 10.73 


7.86 


3.74 


1.06 


3.91 


38.71 


1937 


.3.27 


1.51 


1.30 


4.02 


3.25 6.40 .05 


3.71 


2.51 


2.52 


1.05 


1.02 


30.61 


1938 


. 3.57 


1.72 


3.80 


1.71 


4.36 5.89 5.40 


ft 54 


7.56 


.79 


2.08 


1.41 


43.83 


1939 


. 2.17 


1.88 


1.26 


2.83 


4.06 3.32 2.29 


2.37 


1.65 


3.43 


.56 


.33 


26.15 


1940 


.1.84 


1.88 


1.52 


3.65 


4.04 9.47 4.56 


7.95 


.37 


3.13 


2.23 


1.64 


42.28 


1941... 


. 3.71 


1.20 


2.41 


2.75 


4.11 6.08 3.23 


3 33 


10.26 


5.46 


2.04 


2.02 


46.60 


1942 


. 1.29 


.70 


1.63 


1.06 


4.68 4.38 4.00 


7 XX 


6.04 


2.53 


3.25 


3.35 


40.79 


1943 


. 4.40 


1.01 


4.95 


4.22 


5.72 2.80 5.00 


6.88 


1.61 


1.45 


2.35 


.59 


40.98 


1944 


. 1.78 


3.32 


6.20 


4.00 


5.20 4.74 3.79 


ft HI) 


2.62 


.88 


2.89 


1.49 


42.51 


1945 


. .97 


2.25 


1.87 


4.33 


7.67 5.60 2.16 


a 41 


8.58 


.95 


3.27 


2.53 


43.59 


1946 


. 5.80 


2.05 


2.98 


.91 


3.19 4.98 .35 


2.30 


1.82 


3.92 


2.11 






Aver 


. 2 17 


1.81 


2.53 


2.99 


4.02 4.35 3.44 


3 64 


3.56 


2.85 


2.37 


1.77 


35 50 


STREATOR, La Salle 


county 


1893 .... 








6.17 


3.21 .96 . 




3.00 




2.80 


.97 




1894 


. 1.90 


.44 


2.95 


1.03 


3.62 2.53 










2.10 




1895 


1 55 


.30 


1.40 


'.41 


.80 6.00 


2.60 


1.90 


1.00 


4.54 


5.89 




1896 


.1.30 


1.15 


.65 


2.63 


5.98 3.27 5.75 


1 52 


3.44 


.05 


2.07 


.10 


27.91 


1897 


. 5.65 


1.55 


4.08 


1.88 


1.13 6.70 2.71 


1 07 


1.10 


.23 


4.20 


1.32 


31.62 


1898 


. 3.43 


1.62 


6.93 


3.00 


6.00 3.24 .62 


?, 96 


4.20 


2.99 


2.47 


.77 


38.23 


1899 


. 1.28 


1.82 




.45 


2.50 1.82 5.22 


1.69 


2.73 


2.47 


1.23 


1.93 




1900 


. 1.49 


3.54 


2.85 


1.24 


2.44 1.63 3.13 


7 13 


2.56 


2.18 


2.57 


.34 


31.10 


1901... 


.1.42 


1.40 


3.49 


.75 


1.24 2.85 3.02 


?, 56 


2.20 


.63 


1.38 


2.15 


23.09 


1902 


. .79 


1.32 


4.66 


2.17 


4.37 10.64 8.59 


7 11 


5.26 


3.24 


3.48 


1.74 


53.37 


1903 


. .90 


2.52 


3.79 


4.81 


2.48 2.07 2.43 


4.04 


7.60 


1.02 


.78 


1.78 


34.22 


1904 


.2.23 


1.55 


5.76 


3.91 


4.46 2.11 4.60 


2.39 


4.15 


.20 


T 


1.57 


32.93 


1905 


. 1.07 


1.38 


2.20 


4.22 


4.77 3.01 4.10 


?, 15 


2.39 


2.64 


1.73 


1.41 


31.07 


1906... 


. 2.26 


1.99 


2.77 


1.40 


1.79 3.10 1.39 


<?, 2ft 


4.25 


1.64 


2.75 


3.06 


28.65 


1907 


. 5.64 


.10 


3.02 


2.92 


3.70 3.95 7.61 


ft OH 


5.58 


.51 


2.06 


1.41 


41.58 


1908 


. .59 


3.73 


2.53 


4.15 


7.16 1.69 3.62 


.41 


.39 


.68 


2.36 


.92 


28.23 


1909 


.1.37 


3.45 


1.81 


6.61 


2.76 4.79 2.60 


3.31 


2.74 


2.21 


3.73 


2.85 


38.23 


1910 


. 2.45 


1.03 


.41 


4.20 


5.13 2.98 .81 


ft 3X 


4.59 


1.43 


.43 


1.81 


30.65 


1911 


. 2.22 


1.91 


1.77 


3.50 


2.33 4.24 2.44 


4.20 


6.77 




2.86 


2.17 




1912 


. .44 


1.24 


1.89 


4.62 


4.73 1.15 3.08 


1 XK 


3.18 


s'.ei 


2.55 


.78 


29.15 


1913 


. 1.76 


2.58 


3.64 


2.91 


5.57 1.87 1.59 


3 X 


1.21 


2.29 


2.30 


1.89 


30.89 


1914 


.1.77 


.91 


1.84 


1.75 


3.34 2.17 .56 


3.05 


4.36 


2.38 


.28 


2.01 


24.42 


1915 


. 1.51 


2.00 


.84 


.99 


5.66 1.85 8.60 


4 4?: 


6.23 


.99 


2.08 


1.43 


36.60 


1916... 


. 6.61 


.42 


1.84 


1.28 


5.04 7.01 .45 


3 01 


2.77 


4.42 


2.67 


2.68 


38.20 


1917 


. . 1.85 


.31 


2.26 


3.66 


2.50 4.50 3.34 


?, 43 


3.43 


3.08 


.06 


1.05 


28.47 


1918 


. 2.25 


1.70 


.75 


3.33 


4.09 4.53 2.98 


3 16 


1.62 


2.93 


2.43 


2.31 


32.08 


1919 


, . .23 


2.30 


3.96 


2.87 


4.18 2.95 2.93 


1.74 


a. 27 










1930 








4.85 


2 . 60 3 . 38 .73 


1.83 


.36 


2.32 


2.82 


.27 




1931... 


.70 


.75 


2.63 


2.57 


5.05 3.58 2.78 


2.74 


3.45 


5.18 


5.22 


2.17 


36.82 


1932 


. . 1 . 59 


1.04 


2.55 


1.33 


4.26 3.17 3.98 


6.14 


1.83 


3.49 


.68 


2.73 


32.79 


1933 


. . 2 . 03 


1.41 


2.92 


3.65 


4.71 1.32 1.51 


2.30 


5.11 


3.85 


.48 


.99 


30.28 


1934 


. . .74 


.62 


1.27 


.64 


.78 1.86 3.26 


3 . 73 


3.59 


1.21 


4.13 


1.40 


23.23 


1935 


. . 2.33 


2.25 


3.32 


2.21 


7.35 4.65 3.50 


3.24 


3.71 


.90 


5.26 


1.20 


39.92 


1936... 


. 1.64 


1.25 


1.05 


1.13 


2.77 1.23 1.47 


3.78 


7.93 


3.77 


2.01 


3.57 


31.60 


1937 


. . 3.05 


1.41 


.96 


5.15 


3.57 5.63 1.69 


1.46 


.35 


1.97 


1.33 


1.55 


28.12 


1938 


.. 3.11 


1.70 


3.86 


4.42 


4.55 3.02 5.72 


.99 


7.66 


1.47 


1.52 


.97 


38.99 


1939 


. . 2.97 


2.40 


3.14 


3.63 


3.15 4.37 3.20 


2.36 


.50 


3.03 


.85 


.52 


30.12 


1940 


. . .76 


.92 


1.46 


2.92 


3.93 2.62 .36 


6.73 


.81 


1.90 


1.98 


1.24 


25.63 



1949] CLIMATE OF ILLINOIS: APPENDIX B 229 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 








STREATOR, La 


Salle 


county, concluded 


1941... 


. 2.38 


.71 


1.34 3.98 3.48 


2.84 


2.48 


3.27 


7.49 


7.95 


2.16 


1.07 


39.15 


1942 


. 1.04 


3.54 


2.65 2.16 3.25 


4.83 


4.84 


7.43 


2.56 


1.16 


4.97 


3.58 


42.01 


1943 


. 1.40 


.89 


2.46 6.72 6.82 


3.13 


.68 


5.35 


1.54 


1.56 


1.07 


.52 


32.14 


1944 


. .71 


2.41 


6.83 7.33 4.29 


3.88 


1.64 


2.91 


3.74 


1.64 


.96 


.96 


37.30 


1945 


. .85 


1.30 


3.08 5.61 6.10 


4.30 


.67 


3.25 


8.27 


1.02 


2.46 


2.04 


38.95 


1946 


.1.56 


.63 


2.39 1.00 4.66 


6.57 


2.76 


2.11 


2.01 


3.37 


3.22 


2.40 


32.68 


Aver 


.1.92 


1.56 


2.68 3.09 3.92 


3.44 


3.08 


3.30 


3.53 


2.22 


2.26 


1.71 


32 71 


SYCAMORE, De Kalb 


county 


1881... 






. 3.50 


11.40 


7.05 


.80 


5.10 


8.20 


3.60 


3.75 




1882 


. 1.31 


1.90 


4.85 6.10 3.80 


7.90 


4.35 


2.34 


1.94 


4.55 


2.25 


2.25 


43.54 


1883 


. 2.15 


4.95 


.65 3.41 8.55 


5.85 


5.50 


1.95 


2.93 


6.48 


6.63 


1.86 


50.91 


1884 


. .71 


2.15 


2.02 4.06 3.18 


4.63 


8.84 


3.43 


3.46 


5.76 


2.48 


4.14 


44.86 


1885 


.2.66 


1.55 


.55 4.31 1.65 


7.04 


4.98 


9.90 


6.10 


4.65 


2.06 


3.05 


48.50 


1886 


. 4.10 


1.85 


3.85 5.14 4.24 


2.27 


.67 


4.29 


3.23 


2.26 


.96 


1.54 


34.40 


1887 


.3.93 


4.50 


.89 1.08 .95 


1.12 


3.12 


3.61 


3.27 


2.80 


1.49 


3.02 


29.78 


1888 


. 1.01 


1.16 


2.59 2.05 5.50 


1.27 


3.10 


4.03 


1.09 


2.37 


1.80 


2.16 


28.13 


1889 


.1.13 


1.16 


1.39 3.47 5.17 


1.50 


4.48 


.86 


1.93 


.85 


1.80 


1.52 


25.26 


1890 


. 1.64 


1.15 


1.57 2.58 3.87 


7.98 


.42 


2.07 


1.22 


3.48 


1.87 


1.50 


29.35 


1891... 


. 1.91 


1.60 


1.95 4.50 2.79 


3.55 


2.00 


2.22 


.37 


.89 


4.21 


2.37 


28.36 


1892 


. 1.73 


1.21 


2.01 4.81 11.77 


11.23 


2.56 


3.56 


1.62 


.95 


2.13 


2.06 


45.64 


1893 


.1.83 


2.12 


2.22 4.59 3.25 


5.04 


3.65 


.46 


3.83 


1.13 


2.74 


2.91 


33.05 


1894 


.2.50 


1.35 


3.26 2.87 3.90 


1.79 


.78 


.95 


7.88 


1.77 


1.96 


.74 


29.75 


1895 


. 1.35 


.30 


1.03 1.24 2.52 


2.20 


3.10 


3.06 


.75 


.55 


3.71 


3.38 


23.19 


1896... 


.50 


2.03 


1.44 2.74 3.80 


1.59 


3.60 


.58 


8.39 


.26 


1.88 


.55 


27.36 


1897 


. 4.64 


1.31 


4.31 3.78 1.10 


6.04 


3.03 


1.06 


.44 


.38 


3.38 


.81 


30.28 


1898 


. 3.28 


3.57 


5.42 1.65 3.20 


3.47 


1.22 


6.47 


3.71 


4.81 


1.76 


.80 


39.36 


1899 


. .37 


1.59 


2.14 .96 3.32 


1.19 


4.04 


1.39 


1.73 


2.44 


1.33 


1.41 


21.91 


1900 


.1.63 


3.00 


1.96 1.15 2.83 


2.22 


5.60 11.17 


2.79 


2.27 


2.23 


.53 


37.38 


1901... 


. 1.27 


1.19 


3 . 86 .44 1 . 63 


1.88 


4.51 


1.06 


2.18 


.71 


1.32 


1.30 


21.35 


1902 


. .70 


2.72 


3.27 1.96 7.97 


9.00 


7.83 


2.27 


4.29 


3.10 


2.95 


2.02 


48.08 


1903 


.1.83 


1.87 


3.10 4.76 3.16 


2.70 


7.14 


5.14 


6.88 


2.57 


.97 


2.38 


42.50 


1904 


. 1.31 


1.52 


4.66 2.91 3.51 


2.57 


4.04 


6.49 


5.24 


.84 


.03 


2.16 


35.28 


1905 


. .50 


1.45 


2.98 3.14 6.59 


4.30 


3.20 


6.52 


1.06 


4.61 


2.20 


1.66 


38.21 


1906 


. 2.99 


3.03 


3.06 1.80 4.40 


3.17 


1.36 


3.34 


6.09 


2.02 


3.40 


1.84 


36.50 


1907 


. 3.88 


.30 


1 . 49 2 . 66 4 . 59 


4.57 


4.99 


3.28 


7.39 


1.26 


1.42 


1.17 


37.00 


1908 


. .79 


2.93 


3.31 4.60 7.01 


4.12 


3.06 


3.46 


1.00 


.86 


2.05 


1.50 


34.69 


1909 


. 1.72 


1.97 


1.60 10.09 2.97 


3.27 


.62 


7.08 


3.95 


1.19 


5.42 


5.27 


45.15 


1910 


. 1.25 


.77 


.23 3.78 4.81 


.78 


1.50 


4.22 


1.80 


2.04 


1.10 


.63 


22.91 


1911... 


. 1.47 


1.94 


.74 3.21 2.56 


2.56 


2.65 


4.88 


6.16 


2.91 


3.74 


1.78 


34.60 


1912 


. .40 


1.65 


2.50 2.16 3.75 


2 34 


4 01 


4 26 


2 75 


5 84 


1 12 






1913 


. .38 




4.52 3.08 5.15 


1.94 


4.09 


2.54 


3.23 


3.95 


1.23 


.48 




1914 


.1.55 


.90 


3.26 .96 6.75 


6.50 


.43 


2.48 


3.74 


2.94 


.52 


2.38 


32.41 


1915 


. 1.45 


1.76 


.46 .54 7.55 


5.34 


8.01 


1.93 


4.74 


1.74 


1.37 


.22 


35.11 


1916... 


. 2.89 


.58 


3.25 1.43 3.67 


8.89 


.20 


1.52 


3.86 


4.73 


2.04 


1.05 


34.11 


1917 


. 1.22 


.21 


2.00 2.87 4.15 


4.92 


3.39 


.62 


2.27 


3.44 


.38 


.38 


25.85 


1918 


. 2.47 


1.94 


1.48 4.03 4.50 


1.37 


2.01 


2.10 


2.20 


4.05 


1.51 


1.92 


29.58 


1919 


. .34 


1.73 


5.43 3.16 5.78 


1.52 


1.42 


2.62 


4.48 


6.42 


2.73 


.76 


36.39 


1920 


. .62 


.18 


6.19 4.45 2.11 


2.64 


.28 


1.93 


3.56 


1.50 


.91 


2.93 


27.30 


1921... 


.36 


.30 


5.51 5.46 1.23 


3.85 


.76 


4.52 


6.01 


3.45 


3.03 


4.40 


38.88 


1922 


. 1.23 


.78 


3.98 2.24 3.78 


.32 


6.21 


.73 


3.47 


1.73 


2.42 


.99 


27.88 


1923 


. .59 


.42 


3.48 1.62 1.47 


4.62 


2.02 


4.98 


4.04 


4.83 


1.42 


1.96 


31.45 


1924 


. 1.54 


1.14 


2.65 1.91 2.13 


7.49 


3.75 


7.84 


2.55 


.74 


1.26 


1.61 


34.61 


1925 


. .64 


2.45 


1.24 2.28 1.92 


5.28 


4.01 


2.21 


4.82 


2.98 


1.40 


1.26 


30.49 


1926... 


. 1.07 


3.14 


1.62 2.09 2.00 


5.72 


4.91 


6.11 


7.17 


2.33 


4.91 


.81 


41.88 


1927 


.1.16 


.89 


2.22 6.26 5.09 


3.05 


.29 


1.64 


6.31 


5.56 


3.20 


1.72 


37.39 


1928 


. .85 


1.57 


2.01 3.19 1.51 


6.10 


5.15 


5.49 


2.15 


3.94 


5.75 


2.22 


39 . 93 


1929 


. 3.45 


.55 


2.66 4.89 2.99 


5.66 


4.31 


1.83 


3.18 


3.58 


.98 


.88 


34.96 


1930 


. 1.92 


1.48 


1.55 4.29 1.89 


3.14 


1.25 


1.65 


6.04 


3.06 


1.36 


.33 


27.96 


1931... 


.58 


.47 


2.61 1.50 4.37 


4.56 


3.43 


2.96 


4.04 


2.73 




2.08 




1932 


.1.96 


1.18 


3.13 .79 3.39 


5.19 


2.68 


3.52 


2.57 


4.75 


1.49 


2.68 


33.33 


1933 


. 1.58 


.81 


1.60 2.96 6.81 


3.63 


3.08 


1.95 


2.48 


1.74 


.26 


.83 


27.73 


1934 


. .89 


.17 


.55 1.37 .59 


2.06 


2.92 


3.38 


5.55 


1.47 


6.18 


1.95 


27.08 


1935 


2.10 


.77 


2.50 2.02 5.53 


5.10 


2.29 


2.18 


3.30 


2.12 


4.36 


1.20 


33.47 



230 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SYCAMORE, De 


Kalb county, concluded 


1936... 


. 1.26 


1.59 


.14 


1.19 


2.15 


2 69 


.47 10.94 10.29 


3.64 


1.40 


3.21 


38.97 


1937 


. 2.86 


1.93 


.32 


4.47 


3.54 


6 28 


1.41 4.44 4.09 


1.81 


.42 


.83 


32.40 


1938 


.3.73 


1.90 


4.16 


1.79 


6.06 


7 52 


3.84 4.22 4.73 


.72 


1.82 


1.35 


41.84 


1939 


.1.15 


2.35 


1.38 


3.22 


3.88 


5 05 


1.94 3.13 1.33 


4.89 


.61 


.33 


29.26 


1940 


. 1.21 


1.01 


1.30 


2.97 


4.43 


4.28 


2.03 9.03 .56 


3.51 


2.10 


1.35 


33.78 


1941... 


. 2.33 


1.01 


2.51 


2.45 


7.84 


1 99 


3.79 2.41 8.59 


8.86 


1.73 


1.28 


44.79 


1942 


. .86 


1.28 


2.51 


.53 


4.36 


5 12 


2.37 6.91 3.79 


1.19 


3.03 


2.24 


34.19 


1943 


. 2.53 


1.28 


2.04 


3.14 


5.93 


3.56 


5.03 5.25 1.77 


1.93 


2.55 


.38 


35.39 


1944 


. 1.41 


2.75 


5.24 


3.17 


4.84 


3.62 


1.54 3.03 2.57 


.53 


.80 


1.36 


30.86 


1945 


. .92 


1.12 


2.83 


4.90 


7.33 


5 07 


1.85 3.35 9.38 


.76 


3.68 


1.80 


42.99 


1946 


. 2.42 


.84 


3.83 


.90 


3.49 


4 79 


.36 2.55 1.15 


2.90 


2.79 


2.21 


28.23 


Aver 


.1.66 


1.57 


2.54 


2.99 


4.09 


4 23 


3.16 3.61 3.80 


2.87 


2.24 


1.75 


34 51 


TISKILWA, Bureau county 8 


1864 














1.75 3.16 


3.16 


2.98 


3.89 




1865 


. .26 


3.40 


3.12 


6.14 


1.57 


4 47 


6.96 8.79 11.57 


2.90 


.28 


.54 


50.00 


1866 


. 1.92 


2.02 


2.38 


1.90 


1.90 


2 80 


4.19 5.44 6.79 


1.66 


.26 


3.06 


34.32 


1867 


. 1.76 


1.27 


2.06 


2.00 


6.62 


3.30 


1.95 2.48 1.36 


.97 


2.40 


1.50 


27.67 


1868 


. .48 


.97 


5.15 






2.41 


2.03 2.08 4.61 


1.24 


3.57 


1.21 




1869 


.1.95 


2.47 


1.14 


3.40 


7.78 


9 96 


6.86 9.37 .67 


.81 


3.88 


3.02 


51.31 


1870 


. 4.15 


.70 


5.50 


.60 


1.42 


.70 


1.91 6.64 


3.62 


1.84 


1.52 




1871 


. 3.32 


2.00 


2.72 


2.83 


2.35 


5.90 


1.85 . 




3.45 


3.47 




1872 


. .18 


.75 


2.96 


5.91 


6.56 


6 31 


4.05 9.21 6.33 


.92 


1.59 


1.28 


46.04 


1873 


.4.55 


1.06 


1.39 


6.75 


7.25 


2 65 


5.65 1.32 1.83 


2.23 


1.40 


3.87 


39.95 


1874 


. 3.05 


1.29 


1.81 


3.27 


3.48 


4.56 


1.78 3.56 5.14 


3.40 


2.94 


.74 


35.02 


1875 


.1.10 


2.34 


2.38 


3.40 


4.65 


6.18 


9.60 2.30 8.53 


4.15 


.83 


2.60 


48.06 


* 
























1896 


.1.16 


1.59 


1.01 


4.28 


4.71 


2 81 


5.57 2.50 6.70 


.76 


1.78 


.17 


33.04 


1897 


. 5.81 


1.27 


4.55 


2.77 


1.42 


3.34 


2.38 1.48 2.62 


.36 


3.36 


1.24 


30.60 


1898 


. 3.76 


2.43 


6.17 


3.50 


7.30 


2 85 


1.17 6.97 4.58 


2.63 


2.93 


1.09 


45.38 


1899 


. .38 


1.81 


2.83 


1.03 


5.25 


3 89 


3.48 1.65 2.55 


3.73 


1.15 


1.63 


29.38 


1900 


. 1.88 


3.85 


3.52 


1.72 


4.23 


1.52 


2.40 7.76 4.67 


2.89 


2.03 


.22 


36.69 


1901... 


. 1.36 


1.83 


3.53 


.80 


2.63 


2 15 


5.12 2.02 2.10 


.70 


1.54 


1.41 


25.19 


1902 


. .55 


1.46 


3.29 


2.33 


5.05 


8 19 


10.70 5.00 6.25 


2.99 


3.75 


2.12 


51.68 


1903 


. .99 


2.95 


2.71 


5.07 


3.72 


2 82 


2.24 4.26 7.19 


2.43 


1.27 


1.20 


36.85 


1904 


. 2.53 


1.17 


3.78 


3.32 


3.29 


1 99 


6.78 5.37 3.40 


.28 


.10 


1.90 


33.91 


1905 


. .84 


1.35 


2.73 


4.59 


5.10 


5 79, 


1.82 2.54 2.51 


2.14 


2.03 


1.60 


32.97 


1906 


. 2.39 


2.28 


3.71 


2.42 


2.96 


3 70 


2.14 4.38 6.25 


1.60 


2.97 


2.10 


36.90 


1907 


. 4.47 


.33 


2.21 


2.83 


5.65 


3 . 34 


10.17 5.39 3.69 


.66 


1.59 


1.36 


41.69 


1908 


. 1.22 


3.65 


3.62 


3.01 


9.98 


3 80 


1.89 1.71 1.14 


.90 


2.62 


.83 


34.37 


1909 


.1.52 


3.19 


1.81 


4.75 


3.82 


3 32 


3.02 4.50 3.99 


2.56 


3.67 


4.66 


40.81 


1910 


. 2.57 


1.17 


.31 


2.66 


7.10 


1.52 


.91 1.67 2.51 










1911 .... 






1.04 


3.44 


1.55 


2.22 


3.27 4.78 6.27 


1.71 


2.05 


2.10 




1912 


.36 


1.15 


1.94 


3.36 


4.20 


1 81 


1.13 2 . 29 2 . 53 


6.55 


2.39 


.75 


28.46 


1913 


. 1.46 


2.51 


3.76 


1.67 


5.75 


5.12 


.34 2.04 1.60 


2.72 


2.40 


.59 


29.96 


1914 


. 1.27 


1.14 


1.90 


1.45 


3.09 


2 77 


.58 1.85 3.63 


2.77 


.13 


1.46 


22.04 


1915 


. 1.73 


2.63 


.83 


.90 


6.91 


2.28 


5.11 4.37 5.06 


.50 


2.63 


.67 


33.62 


1916... 


. 5.40 


.71 


3.52 


1.73 


3.25 


7 74 


.76 6.81 2.82 


4.68 


2.41 


1.17 


41.00 


1917 


. .98 


.37 


2.37 


4.38 


2.46 


5 20 


1.95 1.68 2.38 


3.55 


.15 


.36 


25.83 


1918 


.1.57 


2.08 


.63 


2.68 


4.69 


3 . 85 


5.05 3.39 2.27 


2.92 


2.02 


2.26 


33.41 


1919 


T 


2.32 


3.95 


3.22 


4.29 


2 50 


1.61 3.17 3.97 


4.41 


2.98 


.40 


32.82 


1920 


. 1.01 


.20 


6.42 


8.32 


4.15 


2.26 


1.72 1.44 1.72 


2.72 


1.36 


3.20 


34.52 


1921... 


. 1.44 


.27 


6.42 


5.85 


3.63 


2.78 


1.76 5.97 8.76 


3.82 


1.84 


2.51 


45.05 


1922 


. 1.18 


.71 


4.41 


2.67 


2.59 


1.06 


3.52 1.62 3.26 


.49 


3.14 


1.37 


26.02 


1923 


. .84 


1.63 


4.45 


1.48 


4.45 


4.91 


.90 2.14 4.28 


4.64 


1.97 


2.29 


33.98 


1924 


.1.52 


1.56 


2.97 


2.43 


2.08 


8.45 


4.07 10.34 3.74 


.97 


1.21 


2.13 


41.47 


1925 


. .46 


1.78 


.82 


3.47 


1.44 


4.93 


2.73 1.21 5.33 


2.48 


2.86 


1.63 


29.14 


1926... 


.79 


1.98 


1.83 


3.59 


3.56 


5.10 


5.85 3.93 9.38 


2.10 


4.58 


.73 


43.42 


1927 


. 1.01 


2.11 


3.22 


6.66 


5.68 


4.29 


.97 2.60 6.70 


5.13 


4.10 


2.03 


44.50 


1928 


. .24 


1.34 


1.19 


2.78 


1.36 


5.48 


4.64 2.35 1.48 


3.07 


5.80 


2.36 


32.09 


1929 


. 3.64 


.62 


3.67 


7.42 


1.78 


2.81 


9.49 2.60 1.73 


3.21 


1.80 


.77 


39.54 


1930 


2.45 


1.76 


1.29 


4.11 


1.91 


2.36 


.42 1.31 4.29 


3.52 


2.38 


.24 


26.04 



Data from 1864 thru 1875 are for Wyanet, 6 miles northwest of Tiskilwa. 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



231 



Table 9. NORTHERN ILLINOIS : Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


TISKILWA, Bureau county, concluded 


1931... 


.56 


.64 


2.89 


1.97 


4.92 


2.24 2.49 3.79 


5 43 


5.45 


4.41 


2.15 


36.94 


1932 


. 2.15 


1.06 


2.14 


1.06 


3.43 


2.75 2.85 5.03 


1 73 


4.20 


.64 


3.74 


30.78 


1933 


.2.28 


.79 


2.91 


3.17 


6.72 


2.29 3.04 2.57 


3 01 


1.42 


.27 


.93 


29.40 


1934 


. .85 


.64 


.83 


1.08 


1,02 


3.67 3.06 3.47 


7 10 


1.35 


6.33 


1.01 


30.41 


1935 


. 2.18 


1.74 


3.76 


1.59 


6.53 


5.83 4.43 3.43 


3 14 


1.55 


3.88 


1.39 


39.45 


1936... 


. 1.48 


1.55 


.40 


1.71 


2.45 


.54 .72 3.77 


8 41 


1.85 


.64 


2.57 


26.09 


1937 


.2.35 


1.50 


1.39 


5.04 


3.62 


2.94 2.94 4.31 


94 


2.61 


1.39 


1.25 


30.28 


1938 


. 4.19 


1.75 


4.25 


4.01 


4.90 


5.25 5.25 1.10 


1 4? 


.99 


1.57 


1.04 


35.72 


1939 


. 2.38 


1.89 


3.43 


3.44 


5.30 


6 . 22 4 . 94 4 . 86 


51 


3.99 


.80 


.28 


38.04 


1940 


. 1.21 


.65 


1.21 


2.60 


3.31 


2.97 1.11 5.43 


93 


3.10 


2.14 


1.58 


26.24 


1941... 


. 2.94 


.99 


1.15 


3.79 


4.31 


5.63 2.09 2.14 


6 23 


11.34 


1.52 


1.63 


43.76 


1942 


. .92 


3.13 


2.51 


1.84 


4.04 


2.44 6.69 6.39 


3 3D 


1.13 


4.16 


2.27 


38.82 


1943 


. 2.01 


1.08 


1.41 


5.75 


6.83 


3.03 .92 5.90 


1 76 


1.75 


1.13 


.27 


31.84 


1944 


. .56 


1.86 


4.91 


5.39 


6.28 


4 ,07 1 . 55 2 . 29 


3 07 


.99 


1.99 


1.47 


33.66 


1945 


. .79 


1.20 


2.90 


4.58 


6.95 


3.21 .96 3.48 


7.85 


.87 


2.57 


1.78 


37.14 


1946 


. 2.59 


.40 


4.35 


.66 


4.18 


6.29 1.01 2.20 


?, 06 


1.92 


2.83 


2.29 


30.78 


Aver 


.1.82 


1.58 


2.80 


3.29 


4.25 


3.83 3.33 3.76 


4.11 


2.56 


2.27 


1.66 


35 26 


WALNUT, Bureau county 


1892... 


. 2.30 


1.48 


3.00 


4.06 


8.49 


7.84 5.41 .96 


3 4?: 


1.06 


1.73 


1.94 


41.69 


1893 


.1.55 


1.78 


3.13 


5.02 


1.65 


4.54 .86 .48 


3 38 


.23 


2.11 


2.05 


26.78 


1894 


. 2.11 


2.10 


2.98 


1.23 


3.57 


3.00 .26 1.35 


6.89 


1.43 


1.52 


.61 


27.05 


1895 


. 1.92 


.55 


.86 


1.02 


2.39 


.92 5.41 3.23 


2.71 


.64 


2.60 


3.55 


25.80 


1896... 


.87 


1.57 


1.51 


5.17 


4.12 


3.81 6.32 2.63 


5 94 


1.20 


2.06 


.17 


35.37 


1897 


. 5.01 


1.45 


5.05 


3.71 


1.25 


4 . 94 1 . 35 1 . 33 


3 43 


.25 


2.27 


1.31 


31.35 


1898 


. 3.96 


2.08 


5.22 


2.78 


5.22 


3.98 1.20 5.51 


4 47 


2.63 


1.70 


.96 


39.71 


1899 


. .36 


1.57 


1.99 


1.82 


6.68 


1.69 5.05 2.95 


1 91 


2.78 


.84 


1.57 


29.21 


1900 


. 1.50 


2.78 


3.17 


1.35 


3.88 


3.03 6.12 6.60 


4.74 


3.48 


1.64 


.29 


38.58 


1901... 


. 1.03 


1.25 


2.57 


.51 


2.43 


4.16 3.53 1.58 


?, 06 


.82 


1.37 


1.25 


22.56 


1902 


. .38 


1.38 


2.09 


1.53 


6.50 


8.89 11.01 4.63 


4 W 


3.63 


1.89 


1.81 


48.73 


1903 


.1.57 


1.88 


2.65 


4.38 


4.59 


1 . 96 5 . 38 4 . 53 


6 69 


2.98 


.53 


1.32 


38.46 


1904 


.2.22 


1.55 


2.89 


1.69 


3.31 


1 . 38 5 . 34 4 . 53 


3 96 


.37 


.06 


2.18 


29.48 


1905 


. .74 


1.86 


3.63 


3.88 


5.01 


5.20 2.19 4.88 


?, 77 


3.02 


1.18 


1.42 


35.78 


1906... 


. 2.92 


2.87 


5.22 


2.07 


4.17 


3.94 1.68 3.07 


4 05> 


1.22 


2.79 


2.52 


36.49 


1907 


. 3.97 


.25 


2.23 


2.57 


4.13 


3.44 9.53 4.67 


4.84 


.51 


1.41 


.92 


38.47 


1908 


. .85 


3.82 


3.34 


2.74 


9.89 


2.90 2.85 4.94 


1 'M 


.58 


2.31 


.66 


36.14 


1909 


.1.66 


3.91 


1.06 


5.94 


3.14 


3.09 1.83 3.09 


41 


2.09 


5.24 


4.37 


37.83 


1910 


.1.86 


1.07 


.30 


2.42 


4.84 


.69 1.34 4.12 


4.81 


.91 


.60 


1.16 


24.12 


1911... 


. 1.25 


2.26 


.78 


3.66 


2.60 


4.56 3.11 5.64 


7 80 


2.90 


3.76 


1.95 


40.27 


1912 


. .17 


1.72 


1.69 


3.01 


1.99 


3.75 2.43 4.63 


4.09 


5.26 


2.18 


1.26 


32.18 


1913 


.1.30 


2.15 


2.95 


2.06 


5.00 


3.27 1.27 1.51 


9! 0? 


2.88 


1.76 


.39 


26.56 


1914 


. 1.51 


1.04 


2.75 


.65 


5.24 


5.57 1.61 .87 


5 30 


3.36 


.14 


1.88 


29.92 


1915 


.1.85 


2.75 


1.10 


.65 


6.29 


2.86 5.84 4.89 


4.13 


.44 


3.18 


.58 


34.56 


1916... 


. 5.25 


.45 


2.82 


1.75 


3.80 


5.97 .65 2.45 


?, 87 


5.11 


1.86 


1.66 


34.64 


1917 


. .81 


.37 


1.92 


3.40 




3.05 .80 


3.91 


4.49 


.13 


.47 




1918 


. 2.13 


1.88 


.45 


2.50 


6.18 


4.19 3.12 3.16 


2.54 


2.66 


1.28 


2.01 


32.10 


1919 


. .39 


2.06 


2.81 


3.52 


4.64 


4.13 1.28 2.43 


6.79 


3.45 


2.52 


.63 


34.65 


1920 


. .90 


.22 


4.88 




2.55 


1.92 2.26 1.79 


2.09 


2.15 


1.55 


1.77 




1921... 


.75 


.32 


5.28 


5.19 


2.03 


2.79 1.28 8.50 


9.22 


2.88 


1.91 


2.89 


43.04 


1922 


. 1.75 


.65 


4.07 


2.52 


3.77 


.71 5.10 2.08 


2.79 


.66 


2.35 


.79 


27.24 


1923 


. .78 


.86 


5.27 


1.41 


3.20 


5.04 1.14 1.51 


3.22 


2.99 


1.31 


2.17 


28.90 


1924 


. 1.29 


1.53 




1.53 


1.26 


7 . 44 3 . 62 6 . 65 


3.28 


.69 


1.00 


1.98 




1925 


. .61 


1.96 


1.38 


3.60 


1.06 


5.06 1.88 1.79 


6.75 


2.64 


2.11 


1.55 


30.39 


1926... 


. .86 


2.63 


1.94 


2.57 


2.05 


3.33 4.27 6.39 12.83 


1.20 


4.26 


.82 


43.15 


1927 


.1.16 


2.09 


2.47 


5.84 


4.80 


3.90 1.27 3.90 


5.16 




4.52 


1.77 




1928 


. .67 


1.19 


1.91 


2.96 


1.94 


4.73 5.08 3.41 


2.18 


3.89 


4.65 


1.73 


34.34 


1929 


. 3.86 


.53 


3.03 


6.24 


2.89 


4.84 4.98 2.61 


4.61 


3.29 


1.73 


.81 


39.42 


1930 


. 2.40 


1.44 


.72 


3.92 


1.87 


3.73 1.97 1.88 


4.46 


2.84 


1.36 


.42 


27.01 



232 BULLETIN NO. 532 [April, 

Table 9. NORTHERN ILLINOIS: Monthly and Annual Precipitation 

(Concluded) 

Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual 

WALNUT, Bureau county, concluded 



1931... 


.70 


.22 


2.10 


2.34 


3.98 


3.82 


2 65 


3 47 


6 71 


7 63 


4 gg 


2 03 


40 13 


1932 


1 56 


1 43 


3 10 


1 23 


3 38 


4 65 


3 51 


6 41 


1 30 


3 47 


53 


3 04 


33 61 


1933 


... 2 . 54 


1.09 


2.96 


2 68 


6 41 


1 12 


2 07 


2 33 


3 20 


1 90 


58 


81 


27 69 


1934.... 


. . . .97 


.55 


1.05 


.91 


.76 


4.41 


3 76 


3 77 


7 13 


1 33 


6 00 


1 45 


32 09 


1935 


2 41 


1 47 


2 59 


1 58 


6 17 


7 20 


3 45 


5 53 


3 64 


1 45 


4 68 


1 16 


41 33 


1936. . . 


. 1.53 


1.75 


.49 


1.95 


2.22 


1 70 


66 


4 54 


12 10 


2 34 


1 07 


2 62 


32 97 


1937.... 


. . . 2.96 


1.45 


1.81 


5.18 


6.78 


2.29 


2 32 


6 09 


1 66 


2 32 


1 46 


73 


35 05 


1938 


3 58 


2 61 


2 93 


2 80 


6 11 


4 41 


7 18 


1 89 


5 87 


77 


1 63 


1 43 


41 21 


1939 


. . . 2.25 


1.41 


2.20 


3 06 


2 77 


5 01 


4 59 


4 90 


1 02 


2 91 


44 


T 


30 56 


1940 


. . . 1.45 


.79 


1.53 


2.15 


3 81 


2 65 


65 


4 20 


99 


3 14 


1 99 


1 45 


24 80 


1941 


2 77 


95 


1 99 


2 87 


5 20 


5 05 


4 93 


74 


7 86 


10 93 


1 77 


1 20 


46 26 


1942 


. . 98 


2.05 


1 99 


51 


4 66 


3 51 


3 76 


6 40 


1 71 


1 46 


3 11 


2 45 


32 59 


1943 


. . . 1.44 


1.27 


2.05 


5 44 


5 44 


1 99 


3 54 


2 94 


1 49 


1 66 


1 69 


26 


29 21 


1944.... 


. . . .67 


1.97 


5.31 


3.26 


4.10 


2.55 


1 25 


2 48 


4 47 


1 00 


1 97 


1 19 


30 22 


1945 


.69 


1 12 


2 52 


4 67 


7 12 


6 74 


39 


5 21 


6 40 


67 


1 99 


2 14 


39 66 


1946 


. . . 2 . 65 


.61 


3.11 


.72 


6 34 


5 65 


1 15 


3 56 


3 92 


1 74 


2 90 


1 83 


34 18 




1 74 


1 53 


2 57 


2 82 


4 14 


3 89 


3 23 


3 57 


4 37 


2 38 


2 07 


1 48 


33 79 































WAUKEGAN, Lake county 



1923 


86 


61 


1 77 


1 39 


1 15 


3 66 


1 58 


5 30 


5 22 


4 77 


1 00 


1 79 


29 10 


1924 


. . 1.27 


1 13 


2 65 


2 23 


3 61 


6 59 


3 23 


8 66 


3 39 


11 


1 67 


1 91 


36 45 


1925 


. . . .66 


1.75 


1.25 


3 49 


1 04 


2 39 


5 12 


35 


6 33 


4 18 


1 38 


1 46 


29 40 


1926 


98 


2 82 


2 38 


1 64 


3 10 


4 08 


3 58 


2 19 


9 50 


2 49 


3 80 


69 


37 25 


1927 


. . . .99 


.65 


1 69 


4 69 


3 54 


2 34 


3 96 


1 13 


4 69 


3 33 


3 40 


1 81 


32 22 


1928.... 


. .. .78 


.90 


1.95 


3 71 


1 99 


6 17 


3 34 


4 08 


2 02 


3 43 


4 96 


3 00 


36 33 


1929 


3 05 


27 


2 01 


5 52 


3 16 


4 24 


1 22 


1 11 


1 89 


2 94 


91 


1 14 


27 46 


1930 


. . . 1 67 


89 


1 21 


4 31 


2 42 


2 63 


2 42 


1 00 


1 33 


2 75 


1 22 


32 


22 17 


1931... 


.69 


.20 


2.86 


1.48 


4.38 


4 13 


1 08 


3 76 


4 63 


3 17 


3 49 


2 39 


32 26 


1932 


. . 2 57 


1 27 


2 13 


83 


3 98 


2 09 


6 45 


96 


92 


5 47 


1 89 


2 5g 


31 14 


1933 


. . . 1 12 


75 


2 57 


3 78 


7 76 


2 49 


2 06 


1 46 


2 95 


2 60 


1 16 


59 


29 29 


1934 


. . . .84 


.31 


.91 


1 27 


64 


1 96 


1 47 


1 53 


5 71 


2 14 


5 51 


2 11 


24 40 


1935 


1 55 


1 31 


1 60 


2 01 


5 88 


3 23 


3 07 


3 46 


2 72 


1 73 


4 68 


1 33 


33 78 


1936 . 


. . . 1 . 66 


1 61 


.30 


1 95 


1 16 


2 84 


84 


8 02 


8 08 


2 40 


51 


2 86 


32 23 


1937 


. . . 2 . 58 


.83 


1.18 


5 59 


4 45 


4 75 


3 22 


3 62 


1 98 


1 39 


75 


95 


31 29 


1938 


3 07 


2 47 


3 51 


1 38 


3 09 


6 74 


6 77 


2 68 


5 54 


1 00 


1 35 


76 


38 36 


1939. 


. . . 2.13 


2 40 


1 38 


1 76 


1 99 


2 67 


2 55 


1 04 


1 95 


1 78 


58 


32 


20 55 


1940 


. . . 2.12 


1.43 


1.70 


2 07 


4 29 


5 21 


3 04 


9 65 


29 


2 06 


2 63 


1 70 


36 19 


1941 . 


2 86 


1 27 


1 13 


3 55 


2 72 


3 38 


3 41 


2 46 


8 36 


10 24 


2 85 


2 01 


44 24 


1942 


. . . 1 . 58 


1 50 


2 62 


76 


4 82 


3 41 


1 58 


2 83 


4 30 


2 26 


3 10 


1 42 


30 18 


1943 


3 43 


49 


2 30 


3 16 


5 49 


1 26 


4 44 


6 88 


1 97 


1 64 


3 01 


65 


34 72 


1944 . 


. . . 1 28 


2 10 


2 90 


3 66 


2 41 


3 65 


1 98 


3 13 


1 59 


23 


1 10 


1 55 


25 58 


1945 


. . . .68 


1.35 


2 01 


4 30 


8 13 


5 21 


1 26 


3 54 


10 62 


1 09 


4 02 


1 53 


43 74 


1946 . 


2 27 


96 


3 77 


1 13 


2 63 


2 90 


26 


1 51 


88 


1 65 


1 95 


2 12 


22 03 


Aver.. . 


. 1.70 


1.22 


1.99 


2.74 


3.49 


3.67 


2.83 


3.35 


4.04 


2.70 


2.37 


1.54 


31.64 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



233 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Inches) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


BEARDSTOWN, 


Cass 


county 










1916... 




.41 


2.32 


1.49 7.65 


2.34 


T 


4.93 1.94 


1.35 


2.00 


2.58 




1917 


. .87 


.01 


3.20 


4.51 4.44 


8.32 


1.16 


1.93 3.72 


1.29 


.04 


.39 


29.88 


1918 




.74 


.32 


5 . 60 6 . 80 


5.06 


2.83 


2 . 29 3 . 52 


3.41 


2.99 


2.44 




1919 


.27 


1.68 


4.20 


1.90 5.39 


3.61 


.79 


2.68 3.05 


4.39 


2.71 


.30 


30.97 


1920 


. .72 


.21 


5.15 


5.66 6.44 


.58 


3.38 


1.12 3.43 


3.30 


.81 


1.24 


32.04 


1921... 


.1.52 


.23 


4.61 


4.95 1.42 


2.82 


1.56 


4.25 9.45 


2.57 


1.85 


1.80 


37.03 


1922 


.1.35 


2.42 


5.64 


4.67 3.31 


.77 


2.99 


2.32 2.09 


.76 


3.20 


.88 


30.40 


1923 


. .57 


.68 


3.28 


1.42 3.66 


4.06 


1.79 


5.05 4.14 


3.78 


1.46 


2.31 


32.20 


1924 


. 1.32 


1.14 


2.58 


1.52 4.13 


7.33 


3.30 


2.94 2.48 


2.00 


1.00 


3.01 


32.75 


1925 


. .40 


1.97 


1.91 


2.72 1.81 


3.44 


4.91 


5.96 3.17 


3.86 


2.81 


1.13 


34.09 


1926 


.1.55 


2.03 


2.92 


3.89 2.21 


5.42 


4.85 


5.90 10.49 


4.11 


4.46 


1.31 


49.14 


1927 


. 1.08 


1.46 


5.92 


6 . 86 6 . 59 


3.14 


3.75 


3.12 3.55 


3.87 


3.24 


2.28 


44.86 


1928 


. .29 


1.27 


.94 


3.12 2.24 


7.44 


4.09 


3 . 22 3 . 90 


3.15 


2.84 


1.95 


34.45 


1929 


. 3.94 


.61 


3.31 


5.31 4.78 


4.14 


6.52 


1.02 2.41 


3.69 


1.88 


.89 


38.50 


1930 


.3.63 


2.17 


1.75 


1.98 1.87 


2.28 


.64 


2.28 2.60 


1.66 


2.11 


.34 


23.31 


1931 


. .16 


1.46 


2.35 


2.14 7.16 


4.63 


4.24 


1.75 4.13 


2.22 


4.28 


2.04 


36.56 


1932 


. 2.24 


1.03 


1.79 


.66 1.33 


6.68 


4.27 


9.70 2.92 


3.35 


1.02 


3.20 


38.19 


1933 


. 3.00 


.79 


2.63 


4.18 6.34 


2.18 


2.23 


3.16 1.68 


3.39 


.30 


1.41 


31.29 


1934 


.1.18 


1.11 


2.97 


.67 .41 


2.38 


1.03 


3.97 10.33 


2.10 


4.38 


1.61 


32.14 


1935 


. 2.08 


1.90 


2.26 


2.80 12.74 


3.27 


2.64 


.64 2.13 


2.57 


5.97 


.90 


40.90 


1936... 


. 1.43 


1.33 


.88 


.99 3.01 


2.12 


1.64 


1.06 7.34 


2.14 


3.27 


2.24 


27.45 


1937 


.4.73 


.54 


.75 


3.97 1.99 


4.05 


4.42 


1.97 2.88 


2.13 


1.27 


2.07 


30.77 


1938 


. 2.79 


1.49 


4.24 


4.39 6.24 


3.83 


2.04 


3.07 3.58 


.78 


1.91 


1.78 


35.14 


1939 


.2.17 


2.76 


3.87 


4.75 2.48 


5.20 


4.35 


5.28 .32 


.75 


.79 


.96 


33.68 


1940 


. .87 


.60 


2.46 


3.06 2.13 


3.13 


.87 


3.51 .05 


2.04 


2.77 


1.36 


22.85 


1941... 


. 3.31 


.62 


1.11 


5.34 3.55 


4.85 


2.45 


2.61 7.12 


11.21 


1.95 


1.11 


45.23 


1942 


.1.22 


4.58 


2.09 


3.77 4.80 


5.94 


7.38 


1.12 3.01 


1.43 


6.43 


3.36 


45.13 


1943 


.1.12 


.69 


1.59 


4.97 9.23 


1.30 


4.84 


2.71 3.24 


2.21 


.88 


1.56 


34.34 


1944 


. .40 


2.01 


5.34 


7.06 5.17 


1.20 


2.01 


3.62 4.64 


1.65 


2.35 


1.24 


36.69 


1945 


. .88 


1.11 


5.81 


4.27 4.25 


8.33 


1.02 


.68 8.97 


1.83 


1.34 


2.06 


40.55 


1946 


. 2.31 


1.10 


2.61 


3.65 5.27 


3.91 


2.14 


3.46 2.47 


7.58 


7.51 


1.74 


43.75 


Aver 


1.63 


1.30 


2.93 


3.62 4.48 


3.99 


2.91 


3.14 4.02 


2.92 


2.57 


1.66 


35.17 


BLOOMINGTON, McLean county 


1892... 




2.31 


1.48 


6.41 8.27 


6.86 


4.68 


1.16 2.70 


1.25 


2.62 


1.21 




1893 


. 1.36 


3.13 


3.11 


8.34 5.40 


.80 


1.16 


.15 2.70 


.74 


1.93 


1.47 


30.29 


1894 


. 2.32 


1.93 


3.37 


2.53 3.21 


1.89 


1.34 


.91 5.59 




2.52 


1.86 




1895 


. 1.26 


.39 


1.68 


2.55 1.13 


1.75 


6.71 


5.12 4.28 


.61 


3.74 


7.62 


36.84 


1896 


.82 


2.55 


2.11 


2.02 6.79 


3.90 


6.68 


4.75 5.40 


.16 


2.95 


.53 


38.66 


1897 


. 5.41 


1.77 


4.09 


3.92 1.90 


3.49 


3.91 


1.50 2.08 


.48 


5.00 


2.00 


35.55 


1898 


. 4.00 


1.77 


5.65 


2.66 9.42 


4.02 


4.40 


1.85 6.49 


4.31 


2.28 


1.92 


48.77 


1899 


.1.52 


2.20 


4.72 


.82 4.06 


4.05 


1.92 


2.15 1.98 


2.69 


1.67 


2.15 


29.93 


1900 


. 1.23 


5.94 


2.60 


1.85 5.40 


2.49 


3.38 


3 . 38 1 . 55 


2.62 


3.96 


.65 


35.05 


1901... 


. 1.70 


1.84 


4.04 


.94 2.09 


4.79 


1.96 


1.07 1.87 


2.14 


1.11 


3.08 


26.63 


1902 


. .90 


1.75 


4.45 


2.43 2.07 


12.45 


7.97 


5.81 4.91 


2.70 


2.75 


2.24 


50.43 


1903 


. 1.31 


3.32 


3.24 


5.76 4.01 


3.25 


4.63 


2.04 2.75 


1.48 


1.47 


2.49 


35.75 


1904 


. 3.71 


1.35 


5.28 


4.45 3.20 


1.40 


3.89 


2.95 5.65 


.52 


.19 


1.53 


34.12 


1905 


.1.37 


1.82 


2.18 


5.11 5.56 


3.44 


4.06 


2.96 3.59 


2.89 


2.65 


1.89 


37.52 


1906... 


.2.66 


1.57 


2.39 


2.83 2.88 


3.96 


1.27 


4.30 4.30 


1.85 


3.80 


3.68 


35.49 


1907 


. 5.18 


.07 


4.50 


3.54 2.85 


5.74 


6.25 


6.25 2.69 


1.33 


2.17 


3.10 


43.67 


1908 


. 1.20 


3.80 


3.12 


7.78 10.17 


1.53 


2.10 


1.17 .45 


.50 


2.48 


1.47 


35.77 


1909 


. 1.77 


5.09 


1.78 


5.94 3 . 79 


4.63 


3.15 


2.51 2.35 


2.98 


4.28 


2.01 


40.28 


1910 


.1.84 


1.03 


.61 


3.84 5.31 


1.70 


2.91 


.70 5.39 


1.23 


.64 


1.29 


26.49 


1911... 


.1.67 


1.51 


2.34 


2.71 1.73 


1.66 


2.80 


2.46 10.25 


2.58 


3.71 


2.66 


36.08 


1912 


. .77 


1.60 


2.42 


6.36 4.29 


3.19 


5.25 


5.01 1.35 


3.42 


2.32 


.85 


36.83 


1913 


. 3.38 


1.40 


5.78 


3.38 2.88 


4.55 


1.2.7 


2.76 2.27 


4.24 


2.69 


.80 


35.40 


1914 


. 2.13 


1.59 


1.20 


2 . 66 4 . 99 


1.70 


1.05 


3.29 2.36 


2.09 


.25 


2.26 


25.57 


1915 


. 2.03 


1.99 


1.12 


1.90 5.51 


1.64 


7.87 


4.69 7.55 


.87 


1.24 


2.17 


38.58 


1916... 


. 6.19 


.70 


2.12 


1.65 8.13 


4.57 


.50 


2.10 2.94 


4.23 


1.96 


2.12 


37.21 


1917 


.1.35 


.61 


3.35 


3.54 3.25 


8.76 


1.18 


2.00 1.49 


1.62 


.20 


.69 


28.04 


1918 


.2.50 


1.85 


1.08 


4.81 3.14 


5.01 


2.79 


3.77 2.61 


3.07 


3.25 


2.46 


36.34 


1919 


. .05 


1.92 


3.40 


1.22 3.24 


6.10 


2.54 


3.74 3.17 


5.18 


3.97 


.26 


34.79 


1920 


. .80 


.16 


7.43 


7.43 2.67 


.76 


1.82 


1.04 3.38 


1.32 


1.20 


2.89 


30.90 



234 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. 


Sept. Oct. 


Nov. 


Dec. 


Annual 


BLOOMINGTON, 


McLean county, 


concluded 








1921... 


.2.20 


.20 


4.69 


4.66 


2.48 


6.50 2.84 


10.44 


7.84 2.64 


3.81 


2.48 


50.78 


1922 


.1.59 


1.32 


6.54 


4.82 


3.98 


2.63 2.88 


2.93 


.98 2.52 


3.53 


.76 


34.48 


1923 


.1.19 


.98 


5.02 


1.80 


7.13 


3.00 1.50 


5.45 


3.85 5.03 


1.53 


3.92 


40.40 


1924 


. 1.54 


1.53 


2.82 


1.71 


3.12 


7.81 3.07 


12.76 


3.07 2.02 


.94 


3.90 


44.29 


1925 


. .44 


1.62 


2.74 


2.44 


.59 


2.31 3.41 


3.19 


6.32 2.28 


2.73 


1.25 


29.32 


1926 


. 1.90 


1.67 


3.26 


2.T& 


2.37 


4.76 2.21 


2.73 


13.50 5.80 


5.50 


1.32 


47.80 


1927 


.1.74 


2.05 


3.88 


6.59 


6.81 


5.27 3.94 


2.79 


9 . 38 2 . 49 


4.64 


4.06 


53.64 


1928 


. .75 


2.04 


1.30 


2.35 


2.42 


5.17 3.11 


2.70 


3.92 3.77 


3.39 


2.44 


33.36 


1929 


.3.52 


.69 


2.71 


3.91 


4.46 


2.80 9.28 


4.36 


1.68 3.07 


1.65 


1.55 


39.68 


1930 


. 3.55 


1.76 


1.21 


3.91 


2.02 


3.62 .51 


1.49 


1.93 1.66 


3.27 


.29 


25.22 


1931... 


.18 


.94 


1.81 


3.57 


5.53 


2.36 3.78 


1.61 


5.87 3.35 


4.17 


2.17 


35.34 


1932 


. 2.01 


.83 


1.62 


1.64 


1.19 


3.70 2.05 


4.17 


2.59 4.40 


1.26 


3.49 


28.95 


1933 


.3.28 


1.36 


4.52 


4.58 


3.61 


2.02 .58 


1.81 


5.52 4.55 


.58 


.97 


38.38 


1934 


.1.29 


.62 


2.09 


1.13 


.43 


3.74 2.89 


4.70 


6.97 2.10 


5.16 


1.64 


32.76 


1935 


. 2.37 


2.48 


3.93 


3.32 


8.21 


7.38 3.24 


1.20 


2.99 1.11 


6.41 


1.44 


44.08 


1936... 


.1.22 


2.06 


1.66 


1.80 


5.93 


.80 1.32 


4.12 


9.40 2.76 


3.85 


2.72 


37.64 


1937 


.3.59 


1.32 


1.28 


4.51 


1.94 


6.37 1.54 


2.41 


2.09 2.29 


1.24 


1.44 


30.02 


1938 


.2.78 


2.09 


4.46 


3.96 


4.34 


5.95 4.16 


1.86 


2.61 1.70 


1.33 


1.78 


37.02 


1939 


. 4.31 


2.70 


3.97 


5.06 


2.11 


4.19 4.79 


2.94 


.03 2.57 


2.21 


.87 


35.75 


1940 


. 1.28 


1.16 


2.17 


3.65 


4.20 


2.94 1.08 


4.24 


.94 1.90 


2.86 


1.41 


27.83 


1941... 


. 4.08 


1.14 


1.55 


4.37 


4.87 


6.33 1.53 


2.93 


3.91 10.08 


3.07 


1.23 


45.09 


1942 


. .61 


3.18 


3.83 


3.24 


3.98 


3.69 3.42 


4.06 


2.96 2.34 


7.37 


2.29 


40.97 


1943 


.1.19 


.45 


1.16 


3.10 


9.84 


3.80 2.59 


6.56 


1.43 1.74 


1.63 


.59 


34.08 


1944 


. .58 


2.94 


4.15 


8.07 


2.30 


1 . 50 2 . 67 


3.13 


3.13 1.05 


1.07 


1.24 


31.83 


1945 


. .52 


1.64 


3.52 


4.42 


5.55 


7.78 3.94 


5.45 


7.16 .97 


2.70 


3.03 


46.68 


1946 


. 1.41 


1.96 


4.03 


1.85 


6.84 


7.10 .90 


2.45 


2.47 5.75 


4.22 


1.90 


40.88 


Aver 


2.03 


1.77 


3.10 


3.68 


4.25 


4.07 3.14 


3.39 


3.94 2.57 


2.71 


1.99 


36.60 


BURLINGTON, 


Des Moines county, Iowa 


1876 


. 3.60 


1.56 


4.55 


4.22 


4.28 


3.68 7.32 


3.03 


10.54 1.73 


2.33 


.20 


47.04 


1877 


. 1.01 


.11 


3.84 


4.51 


4.01 


9.15 4.16 


5.35 


3.00 5.60 


2.93 


2.48 


46.15 


1878 


. .11 


2.54 


2.26 


1.44 


4.81 


6.39 1.44 


9.15 


1.30 3.71 


.87 


2.78 


36.80 


1879 


. .97 


.93 


1.72 


1.46 


1.55 


5.64 1.21 


2.82 


1 . 92 .87 


2.84 


1.76 


23.69 


1880 


. 3.21 


1.32 


2.19 


4.67 


4.68 


1.47 2.44 


3.63 


2 . 90 1.44 


1.15 


.82 


29.92 


1881... 


. .43 


4.61 


3.07 


2.77 


1.01 


13.55 2.22 


.38 


2.64 6.17 


2.64 






1882 






2.60 




9.80 


15.41 6.08 












1897.. . 














1.73 


38 


1.82 


.61 




1898 


. 1.86 


1.25 


6.13 


2.79 


5.36 














1899 .... 




1.74 


3 83 


3 45 


6 16 


1 71 2 69 


3 56 


2 37 2 32 


.93 


1 76 




1900 


. 1.68 


4.27 


2.23 


3.78 


3.86 


.... 2 . 87 


3.70 




2.88 


.54 




1901 


. 1.84 


1.66 


3.30 


1.86 


2.10 


4.95 2.15 


.36 


2.26 1.08 


.77 


.91 


23.24 


1902 


. .89 


1.16 


2.52 


3.21 


3.17 


11.65 7.27 


10.62 


2.77 3.79 


2.37 


2.13 


51.55 


1903 


. .58 


1.98 


2.32 


3.97 


4.83 


1 . 75 1 . 82 


7.63 


5.81 2.74 


.84 


.70 


34.97 


1904 


. 3.10 


.34 


3.05 


3.28 


3.70 


4.05 5.19 


6.08 


3.98 .43 


.13 


2.48 


35.81 


1905 


. 1.00 


2.40 


1.82 


3.68 


3.07 


7.67 3.30 


6.61 


2.90 3.03 


2.09 


1.35 


38.92 


1906... 


. 3.23 


2.40 


4.55 


2.63 


1.82 


4.80 2.26 


3.74 


5.13 1.51 


3.04 


2.19 


37.30 


1907 


. 5.30 


.26 


2.54 


3.22 


2.74 


3.27 7.87 


6.96 


1 . 89 .64 


1.53 


1.38 


37.60 


1908 


. .86 


3 71 


2.18 


2.16 


11.34 


5.17 2.83 


2.64 


3.35 .77 


2.45 


.65 


38.11 


1909 


.1.62 


2.33 


2.52 


3.79 


3.83 


4.37 5.46 


.87 


4.47 2.65 


4.53 


4.39 


40.83 


1910 


. 1.61 


2.09 


.91 


4.86 


4.73 


3.07 4.15 


.43 


2.77 1.01 


.97 


1.39 


27.99 


1911... 


. 3.73 


3.09 


2.78 


4.21 


1.23 


1.85 3.74 


3.85 


13.17 2.27 


3.74 


3.11 


46.77 


1912 


. .65 


1.45 


2.88 


2.10 


2.15 


1.87 3.85 


2.36 


2.56 4.09 


1.94 


.71 


26.61 


1913 


.1.70 


1.68 


1.87 


3.25 


4.22 


2.43 .18 


2.41 


1.54 3.13 


.89 


2.89 


26.19 


1914 


. 1.61 


1.68 


2.52 


2.00 


1.73 


1.53 1.51 


.83 


5.91 3.11 


.38 


1.57 


24.38 


1915 


. 2.21 


2.67 


1.46 


1.66 


6.32 


3.62 10.81 


1.32 


5.43 .76 


2.93 


.82 


40.01 


1916 


.4.48 


.45 


2.63 


1.69 


10.44 


4.13 .25 


3.42 


4.18 3.58 


1.63 


1.99 


38.87 


1917 


. .61 


.17 


1.47 


2.89 


4.47 


6.52 1.63 


1.80 


5.55 1.80 


.08 


.91 


27.90 


1918 


.1.63 


1.85 


.30 


3.41 


6.96 


3.47 3.33 


4.52 


2.36 3.21 


2.64 


1.92 


35.60 


1919 


. .40 


2.49 


2.03 


2.55 


4.01 


4.34 1.01 


3.05 


4.52 2.35 


3.42 


.20 


30.37 


1920 


. .38 


.33 


4.45 


4.89 


5.49 


4.83 2.99 


.44 


4.01 1.63 


1.48 


1.02 


31.94 



1949] CLIMATE OF ILLINOIS: APPENDIX B 235 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


BURLINGTON, 


Des Moines 


county, Iowa, concluded 


1921... 


. 1.89 


.64 


6.62 


5.35 


1.96 


6.69 


.90 4.08 5.20 


2.54 


.67 


2.47 


39.01 


1922 


.1.33 


2.50 


3.31 


2.81 


6.17 


.69 


5.14 1.05 2.14 


.68 


3.31 


.64 


29.77 


1923 


. 1.29 


.66 


4.65 


1.31 


5.62 


3.75 


2.05 2.17 3.60 


1.13 


1.11 


1.43 


28.77 


1924 


.1.86 


2.00 


3.06 


2.42 


1.74 


13.91 


6.96 4.07 2.85 


1.80 


.40 


2.78 


43.85 


1925 


. 1.23 


3.69 


.70 


4.19 


1.15 


9.43 


4.29 3.77 8.24 


5.68 


1.38 


1.78 


45.53 


1926 


. 1.49 


1.34 


2.54 


1.92 


2.79 


8.64 


3.04 3.76 14.30 


2.58 


2.87 


1.21 


46.48 


1927 


. .90 


2.19 


3.24 


5.31 


5.34 


4.37 


2.38 1.40 2.32 


8.51 


3.12 


2.36 


41.44 


1928 


. .58 


1.75 


2.10 


2.78 


2.31 


5.27 


5.07 6.09 4.94 


4.68 


5.86 


1.69 


43.12 


1929 


. 4.10 


1.00 


4.32 


7.38 


2.81 


5.24 


5.79 2.81 3.34 


5.02 


1.22 


1.21 


44.24 


1930 


.2.20 


1.42 


.77 


2.43 


2.39 


6.20 


.81 .88 3.42 


3.00 


2.42 


.92 


26.86 


1931 


. .56 


.63 


2.41 


3.44 


4.80 


3.81 


3.20 3.84 5.43 


3.24 


4.83 


2.65 


38.84 


1932 


. 1.22 


.98 


2.00 


1.17 


3.92 


2.81 


5.69 6.34 1.72 


2.02 


2.14 


2.14 


32.15 


1933 


.1.65 


.34 


3.62 


1.50 


10.46 


6.49 


1.78 2.64 4.25 


1.12 


.31 


1.63 


35.79 


1934 


. .65 


.55 


1.14 


2.70 


1.25 


2.58 


3.34 1.22 7.85 


1.15 


6.43 


1.20 


30.06 


1935 


.1.99 


2.03 


2.49 


2.46 


6.60 


7.20 


4.30 3.77 4.14 


1.64 


4.20 


1.37 


42.19 


1936... 


. 1.99 


1.81 


1.13 


1.73 


2.07 


1.67 


.23 4.23 10.16 


3.74 


.97 


2.11 


31.84 


1937 


. 3.25 


1.58 


1.18 


3.54 


2.41 


5.03 


2.71 2.20 1.13 


1.58 


.87 


1.20 


26.68 


1938 


. 3.79 


1.44 


3.73 


3.37 


4.74 


3.57 


3.91 6.94 2.71 


1.22 


3.59 


1.18 


40.19 


1939 


.1.16 


1.93 


5.18 


5.31 


2.97 


7.91 


2.70 5.37 .18 


1.39 


1.07 


.75 


35.92 


1940 


. 1.45 


1.22 


2.59 


3.48 


2.34 


3.70 


1.62 5.15 .15 


3.53 


1.53 


1.91 


28.67 


1941 


. 2.95 


.31 


.40 


3.51 


5.10 


4.57 


4.63 1.32 6.27 


15.10 


1.05 


1.93 


47. 14 


1942 


. .57 


2.57 


1.86 


2.09 


3.51 


4.80 


4.30 1.80 4.85 


.79 


4.45 


3.00 


34.59 


1943 


. 1.25 


1.09 


1.34 


4.55 


5.35 


4.68 


3.81 2.89 1.03 


3.27 


1.43 


.45 


31.14 


1944 


. .63 


1.49 


5.20 


6.68 


4.74 


3.38 


3.41 6.25 3.24 


2.86 


2.74 


1.21 


41.83 


1945 


. .77 


.95 


5.15 


4.11 


5.46 


6.11 


.71 1.52 6.14 


.56 


2.15 


2.03 


35.66 


1946 


.2.45 


.31 


4.53 


1.58 


4.66 


8.13 


1.66 5.27 2.15 


1.84 


2.32 


2.47 


37.37 


Aver 


.1.73 


1.62 


2.78 


3.23 


4.38 


5.24 


3 . 39 3 . 53 4.17 


2.71 


2.16 


1.62 


36 56 


CARLINVILLE, Macoupin county 


1891 




1 93 


2 39 


2 08 


2.56 


3.48 


1 . 27 5 . 34 .62 


.94 


5.25 


1.08 




1892 


.1.52 


3.77 


2.42 


9.34 


9.90 


5.72 


4.13 1.91 2.23 


1.78 


4.42 


1.69 


48.83 


1893 


. .37 


5.72 


3.68 


9.23 


4.59 


4.10 


1.84 .51 2.57 


1.69 


1.37 


1.45 


37.12 


1894 


. 3.09 


2.77 


3.15 


3.12 


2.33 


1.42 


1.77 1.20 5.28 


1.07 


3.46 


1.90 


30.56 


1895 


. 1.08 


1.02 


1.60 


2.08 


1.42 


3.16 


5.58 2.14 3.43 


.42 


2.91 


6.75 


31.59 


1896... 


. 1.28 


2.76 


1.51 


2.48 


8.11 


6.60 


6.53 4.63 3.87 


1.35 


2.01 


.43 


41.56 


1897 


. 3.91 


1.62 


6.72 


5.85 


2.66 


3.91 


3.33 1.65 T 


.21 


5.06 


2.89 


37.81 


1898 


. 4.98 


1.96 


7.49 


4.30 


7.58 


3.66 


3.68 2.68 5.39 


4.60 


2.63 


2.16 


51.11 


1899 


.1.79 


2.30 


3.24 


1.27 


7.01 


1.71 


2.54 6.48 2.29 


3.91 


2.30 


2.38 


37.22 


1900 


. .61 


4.70 


1.72 


1.36 


4.85 


4.88 


5.99 1.42 5.03 


2.42 


2.43 


.95 


36.36 


1901... 


.1.70 


1.81 


4.15 


2.56 


.86 


3.65 


.72 1.83 .83 


2.63 


1.49 


4.54 


26.77 


1902 


.1.14 


.86 


4.18 


2.44 


3.37 


10.82 


1.82 5.43 3.76 


3.06 


3.23 


3.39 


43.50 


1903 


. 1.57 


3.76 


2.18 


5.62 


3.17 


3.75 


3.89 3.38 3.69 


1.50 


.54 


1.75 


34.80 


1904 


.2.64 


1.09 


8.60 


6.88 


2.93 


3.86 


9.51 3.57 4.11 


.43 


.08 


1.02 


44.72 


1905 


.2.39 


1.17 


2.04 


3.68 


4.26 


1.20 


7.44 4.65 3.88 


5.14 


1.68 


2.18 


39.71 


1906... 


. 3.12 


3.06 


4.20 


2.60 


2.33 


2.17 


7.73 5.86 4.96 


1.97 


3.94 


2.57 


44.51 


1907 


.5.57 


.57 


2.67 


3.21 


4.36 


5.01 


5 . 59 3.77 .63 


1.52 


1.78 


2.45 


37.13 


1908 


.1.56 


4.81 


2.41 


5.11 


9.08 


3.42 


2.36 1.35 2.28 


.23 


3.37 


1.70 


37.68 


1909 


.2.58 


4.04 


1.87 


6.02 


4.75 


4.65 


5.41 .47 4.76 


3.15 


3.76 


1.99 


43.45 


1910 


. 1.92 


2.20 


.15 


4.89 


6.52 


3.73 


5.89 1.37 7.48 


2.57 


.44 


1.66 


38.82 


1911... 


. 1.80 


2.14 


1.75 


4.93 


2.49 


.90 


2.30 5.76 5.98 


3.49 


2.18 


2.17 


35.89 


1912 


. .92 


1.27 


5.05 


8.60 


3.22 


1.65 


2.84 2.50 1.98 


2.66 


3.06 


.32 


34.07 


1913 


. 3.86 


1.09 


6.06 


3.31 


1.23 


1.01 


1 . 84 1 . 97 3 . 80 


2.86 


4.02 


.85 


31.90 


1914 


.2.80 


2.74 




3.47 


.73 


1.43 


1.49 2.94 2.99 


4.40 


.92 


1.94 




1915 


. 2.05 


1.99 


.58 


3.00 


8.13 


6.71 


5.41 11.09 2.75 


.79 


2.01 


3.52 


48.03 


1916... 


. 6.87 


1.02 


1.42 


1.81 


3.89 


5.14 


1.22 7.39 2.13 


2.01 


2.19 


1.26 


36.35 


1917 


.1.26 


.65 


3.21 


4.66 


4.93 


2.48 


2.57 3.17 2.40 


1.73 


1.02 


.76 


28.84 


1918 


. 1.60 


1.74 


.55 


6.16 


3.21 


1.61 


.95 1.30 5.53 


2.86 


2.38 


2.31 


30.20 


1919 


. .24 


1.55 


1.83 


1.37 


6.03 


7.19 


.94 2.95 5.26 


8.81 


2.60 


.71 


39.48 


1920 


. 1.12 


1.28 


3.72 


3.22 


5.21 


2.53 


4.37 4.19 2.24 


1.88 


.64 


3.38 


33.78 


1921... 


.1.98 


.63 


6.21 


5.78 


2.00 


3.57 


1.69 4.00 5.83 


1.33 


4.55 


2.71 


40.28 


1922 


. 1.20 


1.06 


8.72 


9.81 


1.68 


1.42 


3.06 1.68 .86 


1.37 


2.78 


3.12 


36.76 


1923 


.1.50 


1.42 


4.74 


2.86 


2.63 


3.96 


3.13 4.15 6.44 


6.32 


1.35 


4.22 


42.72 


1924 


.1.59 


1.72 


2.58 


1.15 


5.04 


5.83 


2.87 3.15 3.91 


1.45 


1.87 


4.87 


36.03 


1925 


.53 


2.03 


3.02 


1.17 


1.54 


5.56 


4.81 4.07 4.32 


4.73 


3.24 


2.44 


37.46 



236 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CARLINVILLE, Macoupin county, 


concluded 


1926... 


.1.85 


3.02 


3.39 


3.27 2.12 4.65 


1.76 


4.04 


12.26 


4.91 


4.25 


1.73 


47.25 


1927 


. 1.76 


.87 


5.08 


8.96 9.24 3.52 


6.29 


5.30 


4.02 


3.75 


7.19 


2.55 


58.53 


1928 


. 1.40 


2.84 


2.02 


4.43 3.41 6.76 


6.38 


2.03 


3.20 


3.25 


1.96 


2.54 


40.22 


1929 


. 3.62 


.82 


4.09 


8.34 8.40 4.33 


3.31 


1.63 


1.86 


5.62 


1.02 


2.60 


45.64 


1930 


. 4.92 


2.09 


1.53 


2.35 1.85 3.19 


.52 


1.21 


3.93 


1.90 


2.57 


.55 


26.61 


1931... 


.42 


1.91 


2.40 


2.79 3.64 3.23 


1.58 


2.81 


3.90 


3.16 


5.68 


3.27 


34.79 


1932 


. 2.96 


1.86 


1.75 


2.72 2.32 5.09 


2.57 


7.77 


2.06 


3.32 


1.36 


3.41 


37.19 


1933 


. 4.58 


1.45 


3.87 


3.06 8.41 .11 


1.06 


2.02 


5.54 


5.30 


.85 


1.25 


37.50 


1934 


. 1.53 


.76 


3.31 


1.86 .13 2.39 


.89 


3.98 


6.95 


2.23 


3.85 


1.60 


29.48 


1935 


. 2.43 


1.69 


4.60 


2.75 8.11 5.71 


2.45 


1.56 


3.66 


4.73 


5.25 


1.09 


44.03 


1936 


. 1.98 


1.68 


1.17 


2.63 2.36 2.63 


.26 


.51 


5.31 


4.20 


3.86 


3.33 


29.92 


1937 


.5.53 


1.65 


1.03 


4.81 4.60 8.04 


3.86 


1.96 


2.05 


2.93 


2.01 


2.73 


41.20 


1938 


.1.57 


2.82 


7.78 


3.54 6.31 7.55 


3.31 


3.22 


1.04 


4.31 


2.79 


2.62 


46.86 


1939 


. 3.65 


3.48 


2.87 


5.10 1.93 7.66 


3.17 


5.83 


.43 


1.17 


1.87 


1.68 


38.84 


1940 


.1.67 


1.36 


3.79 


3.08 3.54 4.04 


.77 


5.62 


.16 


1.57 


3.36 


2.47 


31.43 


1941 


. 2.85 


.49 


.89 


5.25 2.15 4.75 


3.70 


2.58 


5.17 


8.88 


2.47 


1.16 


40.34 


1942 


. .78 


4.59 


2.24 


2.53 4.13 9.95 


11.59 


2.38 


2.08 


3.33 


6.90 


3.35 


53.85 


1943 


. .54 


1.10 


3.71 


2.09 10.90 5.86 


2.93 


.58 


2.71 


2.82 


2.31 


1.65 


37.20 


1944 


. .26 


2.39 


3.68 


10.97 3.24 1.05 


1.52 


4.43 


4.61 


1.05 


1.48 


1.37 


36.05 


1945 


. 1.87 


2.78 


8.45 


6.71 4.00 10.86 


1.49 


2.23 


9.79 


1.68 


2.32 


1.90 


54.08 


1946 








2 40 5 94 2 49 


3 16 


8 15 


2.72 


3.24 


8 77 


2 75 




Aver 


. 2.19 


2.07 


3.40 


4.20 4.31 4.21 


3.38 


3.39 


3.70 


2.87 


2.84 


2.23 


38 79 


CASEY, Clark county 


1911... 


















3.57 


2.88 




1912 


. 1.02 


2.73 


4.85 


5.48 3.95 3.20 


6.86 


4.44 


1.60 


2.09 


1.31 


.43 


37.96 


1913 


. 6.98 


.99 


6.95 


2.42 .50 1.66 


2.99 


3.70 


3.80 


5.13 


6.32 


.34 


41.78 


1914 


. 3.04 


2.99 


1.10 


1.92 .79 2.32 


1.70 


3.27 


2.55 


4.43 


1.35 


2.42 


27.88 


1915 


. 3.39 


2.40 


1.17 


1.62 11.57 2.86 


5.27 


8.38 


4.15 


1.30 


3.10 


5.12 


50.33 


1916 


.8.10 


1 36 


97 


1 01 2 46 5 70 


2 83 


1.77 


1.50 


1.74 


1.99 






1917 


. 2.25 


.92 


2.60 


4.88 5.16 6.41 


3.37 


2.45 


2.30 


5.85 


.05 


.66 


36.90 


1918 


. 2.04 


2.84 


1.09 


7.09 2.30 4.57 


2.82 


5.77 


5.95 


2.07 


2.34 


5.21 


44.09 


1919 


. .70 


2.26 


2.78 


2.86 4.85 4.98 


.81 


1.88 


1.66 


11.01 


3.40 


.83 


38.02 


1920 


. 1.52 


2.21 


3.95 


5.00 5.17 .81 


1.51 


4.68 


3.45 


2.83 


1.07 


4.08 


36.28 


1921... 


. 1.74 


.68 


5.19 


3.43 .60 4.27 


1.35 


6.66 


7.95 


3.05 


4.51 


3.54 


42.97 


1922 


. 1.03 


1.00 


8.60 


9.30 3.62 2.12 


2.24 


1.49 


.90 


1.95 




4.46 




1923 


. 2.19 


1.47 


5.17 


3.11 4.67 2.95 


1.64 


8.20 


2.96 


3.77 


1.60 


4.11 


41.84 


1924 


2 39 


2 02 




3 23 5 55 4 89 


1 04 


3 91 


3 63 


.60 


2.64 


6.37 




1925 


. .49 


1.02 


3.57 


2.05 .68 3.27 


1.35 


3.20 


2.33 


1.72 


4.25 


1.52 


25.45 


1926 


. 2.58 


3.20 


3.00 


2.68 1.83 1.88 


1.87 


2.58 


11.53 


3.23 


2.41 


1.49 


38.28 


1927 


. 3.22 


1.32 


6.35 


5.51 11.19 3.01 


2.68 


4.87 


4.93 


3.86 


5.00 


3.98 


55.92 


1928 


. 2.17 


4.69 


2.15 


2.20 6.24 7.18 


3.95 


4.06 


1.70 


4.86 


1.99 


2.54 


43.73 


1929 


. 3.89 


1.11 


3.64 


6.04 11.89 4.83 


3.22 


1.00 


2.32 


5.05 


3.09 


4.03 


50.11 


1930 


. 7.33 


2.25 


.92 


2.00 1.71 4.19 


.40 


2.69 


3.91 


2.32 


2.01 


.87 


30.60 


1931... 


.76 


1.87 


3.17 


1.73 3.43 2.12 


2.64 


4.46 


5.51 


8.37 


4.08 


4.27 


42.41 


1932 


. 4.02 


1.29 


1.25 


1.93 2.18 6.88 


2.37 


3.73 


4.69 


3.15 


3.23 


3.54 


38.26 


1933 


. 2.46 


3.08 


6.21 


3.81 8.35 .11 


1.67 


6.11 


4.47 


2.83 


.74 


1.66 


41.50 


1934 


. 1.48 


.85 


3.50 


2.30 1.14 2.60 


4.41 


4.14 


6.67 


.71 


6.07 


2.16 


36.03 


1935 


. 2.32 


.53 


4.30 


1.76 7.81 3.98 


2.63 


1.30 


3.04 


1.68 


3.69 


1.36 


34.40 


1936 


. 1.30 


3.69 


2.36 


5.45 2.40 .83 


2.64 


1.93 


5.76 


3.78 


4.21 


3.50 


37.85 


1937 


. 7.04 


1.93 


1.86 


4.86 3.39 4.71 


4.05 


5.26 


1.72 


5.24 


1.62 


3.04 


44.72 


1938 


.1.20 


2.34 


12.65 


1.59 5.06 2.06 


5.54 


4.61 


7.93 


1.41 


3.07 


1.78 


49.24 


1939 


. 4.09 


3.80 


3.07 


5.84 1.60 4.87 


3.70 


6.62 


.44 


1.63 


1.67 


1.50 


38.83 


1940 


. 1.47 


1.96 


2.52 


6.22 5.61 2.12 


2.18 


3.17 


2.78 


2.72 


4.17 


2.92 


37.84 


1941... 


. 1.46 


.71 


.56 


3.37 1.74 5.97 


2.29 


3.36 


5.10 


7.25 


4.21 


1.50 


37.52 


1942 


. 1.20 


3.38 


3.97 


2.60 4.83 8.56 


5.45 


2.45 


3.12 


2.54 


5.68 


1.51 


45.29 


1943 


. .71 


.54 


2.57 


2.15 13.08 1.86 


2.89 


T 


1.96 


2.80 


2.55 


2.17 


33.28 


1944 


. .29 


1.95 


2.62 


7.60 4.08 3.21 


1.71 


3.47 


1.57 


.81 


3.32 


1.36 


31.99 


1945 


. .85 


2.56 


9.58 


4.86 4.85 9.50 


1.89 


5.25 


5.89 


2.62 


3.85 


2.28 


53.98 


1946 


. 1.86 


3.60 


1.37 


1.65 8.83 3.62 


3.83 


2.81 


1.63 


2.39 


5.02 


2.17 


38.78 


Aver 


. 2.53 


2.03 


3.69 


3.70 4.66 3.83 


2.79 


3.82 


3.75 


3.34 


3.12 


2.62 


39.88 



1949] CLIMATE OF ILLINOIS: APPENDIX B 237 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHARLESTON, 


Coles county 










1896... 


. 1.02 


1.99 


1.85 


1.30 


6.41 


8.12 


10.04 3.18 6.53 


.49 


3.82 


1.08 


45.83 


1897 


. 4.47 


2.28 


5.26 


6.41 


2.93 


6.60 


1.96 .39 1.67 


.42 


5.42 


3.05 


40.86 


1898 


. 4.44 


1.38 


8.90 


3.59 


4.79 


2.79 


1.93 3.14 4.46 


4.14 


1.66 


1.80 


43.02 


1899 


. 2.97 


2.55 


2.75 


.67 


6.86 


2.56 


.71 1.41 .89 


4.13 


2.95 


2.90 


31.35 


1900 


. .45 


4.52 


1.99 


1.79 


4.00 


4.10 


4.73 3.22 


3.63 


2.81 


1.23 




1901 


. 1 39 


2 30 


3 82 




2 87 








1.62 


3.17 




1902 


. .97 


1.96 


3.77 


2.33 


3.46 


7.78 


3.78 4.24 4.98 


1.99 


2.52 


3.94 


41.72 


1903 


.1.68 


2.97 


1.77 


4.41 


.63 


5.55 


5.32 5.57 1.94 


2.68 


1.47 


2.04 


36.03 


1904 


. 3.92 


1.20 


9.42 


4.54 


4.80 


1.96 


3.67 4.93 5.80 


.80 


.18 


1.84 


43.06 


1905 


. 1.82 


1.49 


1.80 


3.00 


4.29 


1.78 


7.19 1.53 2.31 


5.53 


1.85 


2.36 


34.95 


1906... 


. 3.31 


1.54 


4.80 


1.32 


3.12 


2.98 


2.92 1.96 4.18 


1.41 


4.34 


3.68 


35.56 


1907 


. 4.72 


.34 


4.42 


2.35 


2.79 


3.75 


7.10 3.59 .72 


2.19 


2.60 


3.42 


37.99 


1908 


. 1.28 


5.10 


3.05 


3.60 


6.96 


3.42 


2 . 94 .85 1 . 10 


.18 


3.51 


1.38 


33.27 


1909 


. 2.21 


4.59 


2.05 


7.83 


3.24 


4.04 


9.05 1.12 3.35 


2.80 


3.14 


2.63 


46.05 


1910 


. 2.01 


2.92 


.40 


2.09 


3.84 


2.43 


7.37 3.75 3.81 


4.53 


3.42 


1.14 


37.71 


1911... 


. 3.46 


1.62 


2.31 


5.30 


.52 


1.74 


1.47 3.19 10.25 


3.54 


2.84 


1.77 


38.01 


1912 


. 1.04 


2.06 


4.85 


4.29 


3.15 


3.07 


6.36 4.47 3.57 


1.94 


1.22 


1.51 


37.53 


1913 


. 4.93 


1.42 


7.21 


2.65 


.61 


1.42 


.75 


4.63 


3.89 


.64 




1914 


. 2.41 


2.35 


1.17 


2.47 


.71 


.82 


1.54 6.16 1.05 


4.02 


1.10 


1.60 


25.40 


1915 


. 2.71 


2.39 


.90 


1.39 


7.88 


4.11 


7.11 6.77 2.40 


1.06 


1.72 


4.24 


42.68 


1916 


. 9.37 


1.03 


1.45 


1.18 


3.70 


4.61 


1.38 2.65 3.34 


2.10 


1.88 


4.03 


36.72 


1917 


. 1.71 


1.04 


2.85 


3.46 


7.76 


6.60 


7.10 4.36 1.15 


3.76 


.24 


.86 


40.89 


1918 


. 2.15 


2.57 


1.03 


7.46 


3.00 


5.49 


3.00 4.55 5.60 


2.64 


2.23 


4.95 


44.67 


1919 


. .71 


2.92 


3.81 


2.01 


4.03 


5.91 


2.06 3.99 2.81 


8.89 


4.21 


.50 


41.85 


1920 


. .88 


1.91 


3.76 


3.91 


6.12 


1.08 


2.96 1.88 4.05 


3.42 


.96 


3.27 


34.20 


1921 


. 1.38 


.88 


6.93 


3.94 


2.07 


4.19 


1.92 5.94 8.37 


2.61 


4.34 


3.21 


45.78 


1922 


. 1.06 


.98 


8.86 


8.63 


2.35 


2.35 


3.60 2.13 .51 


3.55 


2.15 


4.17 


40.34 


1923 


. 2.06 


1.46 


5.26 


3.19 


5.49 


2.48 


2.53 4.93 4.50 


4.57 


2.16 


3.99 


42.62 


1924 


. 2.86 


1.59 


2.90 


4.03 


5.68 


4.80 


2.00 6.15 4.39 


.64 


2.06 


5.34 


42.44 


1925 


. .69 


1.03 


6.06 


1.44 


.69 


4.50 


2.30 4.35 2.82 


1.96 


4.09 


1.39 


31.32 


1926 


. 2.24 


2.76 


2.17 


2.77 


3.91 


2.90 


4. IS 2.71 14.14 


4.37 


2.72 


1.94 


46.81 


1927 


.2.68 


.95 


6.45 


7.93 


8.73 


2.93 


3.04 5.49 4.53 


5.14 


4.93 


3.23 


56.03 


1928 


.1.67 


3.32 


1.20 


2.70 


4.53 


8.08 


2.44 2.84 2.98 


2.99 


2.05 


3.00 


37.80 


1929 


. 3.75 


.66 


3.80 


7.25 


9.05 


3.37 


8.17 1.17 1.39 


3.67 


1.92 


5.07 


49.27 


1930 


. 7.73 


1.85 


1.48 


2.42 


.90 


4.31 


.99 2.26 3.02 


2.18 


2.55 


.44 


30.13 


1931 


. .40 


1.61 


2.97 


2.39 


4.03 


3.77 


1.23 4.94 7.02 


5.04 


5.00 


3.41 


41.81 


1932 


. 3.29 


1.48 


1.53 


1.03 


2.04 


4.81 


1.64 3.39 3.09 


3.70 


2.84 


4.37 


33.21 


1933 . . . 


. 2.28 


2.07 


4.17 


4 53 


10 41 


2 81 


1 87 3 07 


3 11 


1 53 


2 17 




1934 


. 1.70 


1.11 


3.33 


1.83 


1.37 


2.26 


4.22 6.01 


1.02 


6.36 


1.37 




1935 


. 1.52 


.74 


3.90 


1.78 


10.01 


3.80 


1.25 2.43 3.29 


2.15 


3.74 


1.07 


35.68 


1936 


.1.13 


2.84 


3.21 


3.56 


2.54 


.66 


2.26 2.87 4.37 


3.22 


2.26 


2.86 


31.78 


1937 


. 6.36 


1.42 


1.15 


4.18 


3.78 


4.54 


5.19 2.21 1.62 


5.76 


1.75 


1.54 


39.50 


1938 


. 1.26 


1.48 


9.00 


2.44 


5.36 


2.66 


0.21 3.73 4.87 


1.70 


2.15 


2.62 


46.48 


1939 


. 3.41 


2.87 


5.17 


5.74 


2.17 


7.40 


2.86 7.09 .66 


1.58 


1.49 


1.36 


41.80 


1940 


. 1.75 


1.16 


2.15 


5.40 


4.57 


2.37 


1.92 3.76 1.49 


3.44 


4.12 


3.00 


35.13 


1941... 


. 2.04 


.56 


.67 


4.35 


2.66 


4.81 


2.48 2.64 3.70 


7.53 


3.82 


1.19 


36.45 


1942 


. 1.24 


4.25 


3.72 


3.03 


3.20 


6.95 


5.69 2.16 1.29 


2.49 


6.60 


2.01 


42.63 


1943 


. .70 


.76 


3.54 


2.73 


10.80 


2.08 


2.79 .52 2.59 


2.74 


3.25 


1.91 


34.41 


1944 


. .19 


2.27 


2.76 


6.19 












1.56 




1945 


. 1.14 


3.59 


10.63 


4.81 


6.40 


9.98 












1946 


.1.70 


2.69 


1.08 


1.61 


8.63 


3.62 


4.44 3.79 1.82 


2.88 


5.73 


2.03 


40.02 


Aver 


2.40 


2.02 


3.72 


3.58 


4.40 


3.98 


3.74 3.52 3.58 


3.10 


2.88 


2.47 


39.39 


CLINTON, De 


Witt county 










1910 


. 1.95 


1.24 


.29 


2.93 


5.50 


1.51 


3.75 2.41 3.66 


2.29 


1.89 


1.47 


28.89 


1911... 


. 2.46 


1.51 


1.96 


4.04 


2.63 


1.87 


2.77 5.09 10.91 


3.04 




1.95 




1912 


. 1.18 


1.47 


3.72 


8.49 


4.84 


1.48 


5.44 2.36 1.96 


4.34 


4.00 


1.00 


40.28 


1913 


. 4.40 


1.12 


7.46 


4.31 


1.54 


1.92 


2.02 2.20 3.62 


4.60 


3.15 


1.36 


37.70 


1914 


. 2.16 


2.25 


1.49 


3.53 


1.75 


2.95 


2.52 2.03 2.11 


2.36 


.45 


1.79 


25.39 


1915 


. 1.49 


2.20 


1.03 


2.16 


6.00 


3.35 


10.38 7.54 6.95 


.81 


1.26 


2.35 


45.52 



238 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CLINTON, De 


Witt county, concluded 


1916... 


. 5.09 


1.08 


1.76 


1.74 


5.54 


2.80 1.20 


2.57 2.65 


3.02 


2.47 


1.71 


31.63 


1917 


. 1.43 


.57 


3.87 


4.39 


5.23 


6.71 1.65 


2 . 29 3 . 20 


1.83 


.07 


.91 


32.15 


1918 


. 2.34 


1.81 


1.67 


5.18 


4.93 


7.44 4.62 


6.53 3.87 


3.08 


2.75 


3.24 


47.46 


1919 


43 






1 05 


5 14 


7 95 1 63 


8 12 3 25 


5 03 


3 96 


19 




1920 . . . 


. .80 


.30 


4.35 




5.05 


2 . 20 5 . 28 


2 57 5 52 


1 33 


.84 


3 68 




1921... 


. 1.97 


.56 


4.76 


3^97 


1.82 


6.44 1.75 


4.06 6.01 


2.76 


4.66 


2.25 


41.01 


1922 


1 83 


1 30 


7 76 


5 81 


4 88 


2 68 3 55 


3 96 54 


3 61 


3 12 






1923 




1.19 


5.83 


2.09 


6.35 


2 . 04 2 . 74 


5 99 5 05 


5 13 


1 66 


4 13 




1924 


. 1.71 


1.56 


3.97 


3.83 


3.91 


8.27 1.25 


7.83 2.47 


3.39 


.92 


6.77 


45.88 


1925 


. .48 


1.64 


3.24 


2.72 


.26 


2.52 2.28 


4.27 5.32 


4.13 


2.20 


2.11 


31.17 


1926... 




1.98 


2.03 


5.32 


2.32 


6.75 4 31 


3 05 15 27 


7.46 


6 41 


81 




1927 


. 1.61 


1.24 


5.22 


6.80 


5.98 


3.64 5.23 


3.58 6.16 


4.17 


4.62 


4.28 


52.53 


1928 


. .92 


2.34 


1.78 


3.26 


2.32 


5.09 4.23 


1.52 3.89 


5.59 


3.01 


2.08 


36.03 


1929 


.4.59 


.67 


2.80 


6.10 


9.04 


3.63 7.51 


3.17 .99 


4.48 


1.43 


1.58 


45.99 


1930 


. 4.87 


1.34 


2.02 


4.01 


1.04 


3.43 .83 


3.56 2.96 


1.93 


2.78 


.36 


29.13 


1931... 


.16 


1.16 


2.65 


3.14 


4.75 


4.64 3.89 


4.77 4.92 


2.19 


4.36 


1.79 


38.42 


1932 


. 2.01 


.69 








4 06 2 61 


3 57 3 71 


3 59 


1 10 


2 53 




1933 


. 3.62 


1.08 


7.64 


2.87 


7.13 


.05 .59 


1.42 3.50 


5.05 


.25 


.91 


34.11 


1934 


.1.23 


.89 






.65 


3.30 4.39 


4.23 6.29 


2.73 


6.08 


1.58 




1935 


. .97 


1.37 


6.10 


2.87 


11.06 


9.22 2.75 


1.44 2.68 


2.80 


8.13 


1.26 


50.65 


1936... 


. 1.21 


2.72 


1.99 


4.82 


1.40 


1.39 3.31 


4.22 4.37 


2.93 


2.10 


3.32 


33.78 


1937 


. 3.61 


2.46 


.52 


4.32 


2.96 


6.37 2.70 


2.29 4.21 


3.29 


1.22 


1.68 


35.63 


1938 


.1.60 


1.98 


4.57 


3.67 


6.41 


5.65 5.47 


3.19 2.10 


1.82 


1.18 


2.57 


40.21 


1939 


. 2.81 


4.37 


4.01 


4.84 


1.88 


5.06 4.74 


3.08 .26 


2.79 


.75 


1.13 


35.72 


1940 


.1.15 


.92 


2.97 


4.44 


3.84 


2.30 .61 


4.76 .43 


2.89 


3.12 


.52 


27.95 


1941... 


. 1.90 


.65 


.66 


4.37 


2.66 


4.35 3.53 


3.09 5.95 


11.74 


3.30 


1.66 


43.86 


1942 


.1.57 


3.90 


3.23 


2.55 


3.31 


6.56 6.97 


1.51 5.77 


3.09 


6.80 


1.94 


47.20 


1943 


. 1.07 


.92 


2.86 


3.80 


10.04 


3.47 2.45 


3.21 1.76 


2.70 


2.12 


.68 


35.08 


1944 


. .65 


3.20 


3.33 


9.08 


3.23 


1.68 1.46 


3.45 2.82 


1.21 


1.20 


1.11 


32.42 


1945 


. .75 


.69 


4.53 


4.56 


5.53 


5.13 2.12 


3.60 7.87 


1.61 


2.55 


1.60 


40.54 


1946 


. 1.21 


1.53 


2.81 


1.89 


8.75 


7.16 3.68 


4.58 2.58 


4.35 


4.62 


2.37 


45.53 


Aver 


. 1.92 


1.55 


3.38 


4.09 


4.43 


4.19 3.41 


3.71 4.20 


3.49 


2.79 


1.96 


39 12 


DANVILLE, Vermilion county 


1897 










2.14 


4.58 2.12 


.74 .15 


49 


5 96 


2.43 




1898 


.3.66 


1.79 


7.93 


2.47 


3.98 


6.37 2.24 


3.89 4.00 


5.06 


3.08 


1.86 


46.33 


1899 


.2.68 


2.55 


3.24 


1.33 


3.91 


1 . 49 


.57 2.54 


3.36 


2.46 


1.95 




1900 


. .48 


2.13 


.99 


1.02 


5.45 


1.17 7.25 


4.77 1.80 


2.01 


3.56 


.11 


30.74 


1901... 


. 1.36 


.56 


2.28 


.93 


3.04 


2.00 T 


2.05 .40 


2.13 


1.27 


2.84 


18.86 


1902 


. .98 


27 


2 60 


1.88 


2 60 


.80 


1 59 










1903 . . . 






2.22 


6.37 


4.75 


2 65 1.19 












1904 


4.44 


1.95 


7.67 


3.05 


1.92 


3.94 3.55 


5.20 2.72 


.90 


.07 


1.23 


36.64 


1910 












.... 4.30 


2.12 6.84 


2.45 


1.85 


1.61 




1911 


. 2.68 


1.67 


1.93 


3.67 


.73 


1 . 85 .97 


3.73 5.91 


3.54 


3.36 


1.76 


31.80 


1912 


. 1.44 


2.23 


4.32 


5.42 


3.68 


3.61 5.10 


4.52 3.06 


3.07 


2.39 


.79 


39.63 


1913 


. 7.17 


.96 


7.72 


2.87 


.54 


2.42 1.08 


2.72 3.68 


4.80 


4.86 


.88 


39.70 


1914 


. 2.92 


3.36 


2.23 


2.95 


3.24 


.90 1.28 


2 . 59 1 . 86 


2.49 


1.18 


2.35 


27.35 


1915 


. 2.43 


2.76 


1.49 


1.75 


4.85 


3.42 9.59 


5.37 2.77 


1.57 


3.33 


3.06 


42.39 


1916... 


. 7.98 


.93 


1.14 


1.15 


7.16 


3.47 .95 


2.53 2.52 


2.24 


2.51 


3.53 


36.11 


1917 


. 1.90 


.76 


4.22 


4.48 


5.74 


7.56 5.32 


6.14 1.08 


4.04 


.18 


.85 


42.27 


1918 


. 2.53 


2.00 


1.42 


6.44 


4.72 


4.39 2.03 


3.47 5.19 


4.49 


2.06 


4.30 


43.04 


1919 


. .63 


2.66 


3.78 


1.64 


3.93 


4.15 2.54 


2.25 2.53 


6.34 


3.36 


.25 


34.06 


1920 


. 1.44 


.57 


3.39 


6.88 


3.29 


1.07 2.40 


2.33 2.37 


2.04 


1.08 


3.39 


30.25 


1921... 


. 1.98 


.64 


6.32 


3.72 


1.84 


2.98 1.53 


4.43 7.39 


3.10 


4.59 


1.37 


39.89 


1922 


. 1.85 


1.55 


7.63 


8.11 


3.02 


3.13 .... 




2.65 




2.81 




1923 


. 2.30 


1.76 




2.75 


5.38 


1.48 2.42 


5.81 1.71 


3.75 


1.82 


5.28 




1924 


. 1.95 






3.82 


3.29 


10.00 .85 


6.65 4.34 


.73 


.94 


5.94 




1925 


. .29 


.50 


4.99 


1.64 


.92 


3.01 2.01 


5.08 5.58 


2.82 


3.07 


1.21 


31.12 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



239 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DANVILLE, Vermilion county, concluded 


1926 


2.29 


2 82 


2.03 


4.69 


2 88 


3 55 


3 82 5 72 12 01 


3 02 


1 48 






1927 


. 1.77 


1.16 


3.33 


6.17 


8.58 


6.09 


5.18 1.96 4.55 


6.32 


5.53 


3.66 


54.30 


1928 


. 2.69 


2.09 


.81 


2.34 


3.18 


4.51 


5.59 2.57 3.38 


1.90 


1.54 


2.04 


32.64 


1929 




37 


2 56 


3 56 


6 44 


2 81 


5 23 4 06 66 


3 46 


1 80 


4 92 




1930 


.4.49 


1.60 


1.16 


4.59 


1.02 


2.90 


1.88 1.33 2.82 


1.39 


.79 


.15 


24.12 


1931... 


.13 


.43 


1.87 


3.06 


3.35 


3.77 


2.88 4.11 3.36 


2.74 


4.12 


2.21 


32.03 


1932 


. 2.54 


1.99 


1.77 


1.00 


1.55 


2.85 


3.23 2.47 3.12 


3.52 


2.52 


4.44 


31.00 


1933 


. 2.80 


1.86 


4.99 


2.78 


6.11 


.50 


1.54 1.65 3.13 


2.63 


.66 


.88 


29.53 


1934 


.1.24 


.49 


2.76 


1.27 


.20 


2.69 


1.80 4.73 7.09 


.48 


5.35 


1.79 


29.89 


1935 


. 1.97 


.84 


2.74 


1.67 


6.97 


5.98 


3.30 2.23 3.72 


.95 


4.45 


1.03 


35.85 


1936 


. 1.31 


2.82 


1.91 


2.37 


4.74 


.25 


1.06 3.99 6.20 


5.79 


4.27 


2.99 


37.70 


1937 


.5.94 


1.31 


1.35 


6.89 


1.90 


4.62 


4.43 .93 5.05 


4.31 


1.80 


1.78 


40.31 


1938 


.1.13 


2.16 


5.24 


2.79 


4.92 


4.35 


5.87 4.52 1.85 


1.49 


2.24 


2.00 


38.56 


1939 


. 3.67 


4.55 


4.83 


5.87 


1.18 


8.18 


4.48 3.66 .53 


2.43 


.62 


1.94 


41.94 


1940 


. 1.51 


1.14 


1.65 


2.81 


5.03 


3.50 


.49 3.55 .62 


2.67 


3.95 


2.25 


29.17 


1941... 


. .89 


.67 


.81 


2.88 


3.46 


5.68 


3.81 3.26 2.21 


8.62 


3.33 


1.06 


36.68 


1942 


. 1.24 


3.00 


2.99 


3.24 


4.10 


4.00 


4.23 1.07 4.11 


1.63 


4.47 


2.58 


36.66 


1943 


. 1.36 


.97 


2.58 


2.35 


12.94 


2.25 


3.93 4.14 2.48 


2.07 


1.64 


.98 


37.69 


1944 


. .37 


2.84 


2.98 


6.41 


4.98 


3.20 


2.87 3.05 2.53 


1.36 


1.59 


1.19 


33.37 


1945 


. .35 


1.16 


6.51 


3.95 


5.29 


6.17 


2.97 4.50 7.27 


2.46 


2.89 


2.87 


46.39 


1946 


.1.22 


2.38 


2.77 


1.74 


6.14 


8.77 


.89 1.99 1.74 


3.59 


3.80 


2.54 


37.57 


Aver 


. 2.24 


1.66 


3.30 


3.37 


3.98 


3.77 


3.00 3.35 3.50 


2.95 


2.66 


2.22 


3fi 00 


DECATUR, Macon county 


1894... 


. 1.83 


2.39 


2.79 


3.06 


1.90 


2.23 


2.33 1.64 2.94 


.42 


1.77 


2.65 


25.95 


1895 


. 1.19 


.94 


1.18 


2.75 


1.07 


4.40 


3.42 1.35 4.47 


.55 


3.12 


6.47 


30.91 


1896... 


.97 


2.91 


1.44 


1.56 


4.75 


4.00 


7.12 3.00 5.80 


.66 


2.81 


.32 


35.34 


1897 


. 3.83 


1.23 


5.08 


3.87 


3.21 


4.22 


3.03 1.40 .41 


.28 


4.57 


2.54 


33.67 


1898 


. 5.18 


2.71 


9.85 


3.36 


5.74 


2.39 


1.07 2.16 5.47 


5.34 


2.96 


1.68 


47.91 


1899 


. 1.89 


2.43 


2.58 


.59 


7.01 


2.11 


1.02 2.56 1.50 


4.20 


2.01 


2.37 


30.27 


1900 


. .59 


5.89 


1.84 


1.46 


4.78 


4.18 


7.80 4.71 4.34 


1.33 


3.48 


.92 


41.32 


1901 . . . 


. 1.78 


1.17 


3.23 


1.98 


2.00 


5.33 


.49 .86 1.27 


3.18 


1.54 


4.43 


27.26 


1902 


. 1.06 


1.42 


3.93 


2.26 


2.80 


9.03 


2.43 7.01 4.98 


2.08 


2.45 


3.83 


43.28 


1903 


. 1.60 


4.13 


2.48 


4.84 


3.66 


2.61 


4.57 5.16 2.67 


4.07 


1.74 


2.16 


39.69 


1904 


. 2.73 


1.33 


7.29 


3.39 


2.67 


2.18 


4.44 5.55 9.48 


.18 


.07 


1.84 


41.15 


1905 


. 2.02 


1.72 


1.56 


3.11 


4.54 


1.69 


3.82 1.44 3.05 


4.76 


1.70 


1.90 


31.31 


1906... 


. 3.04 


1.90 


4.93 


3.02 


6.73 


1.78 


3.45 5.35 3.47 


2.46 


4.63 


3.51 


44.27 


1907 


. 7.47 


.30 


4.75 


2.94 


2.89 


4.29 


7.03 7.36 2.08 


1.01 


2.07 


2.89 


45.08 


1908 


. 1 . 64 


4.29 


3.87 


4.54 


10.23 


3.81 


2.25 1.25 1.27 


.71 


2.09 


1.67 


37.62 


1909 


. 2.43 


4.31 


1.27 


5.58 


5.30 


3.14 


6.18 2.20 2.79 


3.59 


3.13 


2.40 


42.32 


1910 


. 1.95 


1.72 


.58 


3.00 


7.16 


3.27 


3.23 3.81 3.94 


2.20 


2.84 


1.98 


35.68 


1911... 


, . 2.67 


1.50 


1.83 


5.11 


3.60 


2.44 


1.45 4.08 12.00 


2.59 


3.31 


1.41 


41.99 


1912 , 


,. 1.34 


1.64 


4.60 


6.80 


3.25 


3.41 


2.67 4.12 1.50 


3.22 


2.09 


.97 


35.61 


1913 


. 5.19 


1.28 


6.87 


3.55 


1.12 


2.90 


1.40 2.18 3.74 


3.65 


3.68 


1.62 


37.18 


1914 


, . 2.69 


3.03 


1.00 


3.85 


.53 


.61 


2.50 2.86 3.26 


1.74 


.64 


2.39 


25.10 


1915 


. 1.91 


2.34 


1.34 


2.77 


6.80 


3.08 


8.30 5.27 3.48 


.72 


1.18 


3.25 


40.44 


1916... 


. 6.17 


1.16 


1.59 


1.53 


5.28 


2.72 


.11 2.72 2.89 


2.25 


2.08 


1.53 


30.03 


1917 


. 1.19 


.50 


4.74 


4.08 


4.66 


6.77 


1.04 2.59 1.18 


2.09 


.23 


.87 


29.94 


1918 


. 2.16 


2.04 


.88 


5.39 


3.21 


4.66 


3 . 89 3 . 97 4.26 


2.45 


1.74 


3.01 


37.66 


1919 


. .31 


1.43 


2.43 


1.30 


4.04 


7.46 


1.31 2.23 2.15 


6.97 


3.00 


.25 


32.88 


1920 


. 1.03 


.62 


5.21 


5.16 


6.01 


1.21 


1.79 2.22 3.07 


1.65 


.65 


3.64 


32.26 


1921 


. 1.58 


.91 


7.71 


4.33 


1.06 


2.85 


2.75 5.66 5.62 


2.02 


4.69 


2.48 


41.66 


1922 


. . 1.33 


.72 


9.82 


7.40 


2.42 


1.25 


3.53 1.78 1.04 


2.47 


3.21 


2.87 


37.84 


1923 


. 1.33 


1.38 


5.45 


2.51 


3.28 


3.16 


4.64 3.51 5.00 


5.72 


1.79 


5.15 


42.92 


1924 


. . 2.05 


1.43 


3.41 


2.63 


3.49 


5.81 


1.35 3.75 2.04 


2.32 


1.39 


5.85 


35.52 


1925 


. .56 


1.79 


3.65 


1.98 


.63 


2.87 


2.54 4.62 5.40 


3.11 


2.36 


1.25 


30.76 


1926... 


. . 1.88 


3.12 


2.67 


5.16 


3.98 


4.98 


2.23 7.47 16.56 


6.18 


3.09 


1.36 


58.68 


1927 


.. 2.18 


1.11 


4.34 


7.74 


7.86 


5.25 


6.14 5.70 6.83 


5.14 


5.37 


2.92 


60.58 


1928 


, . 1.65 


2.60 


1.74 


3.87 


2.92 


4.88 


3.95 2.01 3.55 


3.86 


2.41 


2.96 


36.40 


1929 


, . 3.46 


.61 


3.40 


7.63 


7.64 


3.50 


6.77 1.88 1.91 


4.82 


1.21 


2.60 


45.43 


1930 


. . 4.40 


1.88 


1.70 


3.03 


2.41 


2.89 


1.54 4.00 4.05 


1.22 


2.01 


.21 


29.34 



240 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


DECATUR, Macon county, concluded 


1931 


. .20 


1.30 


2.70 


3.04 3.55 2.25 


2.41 


1.98 


3.42 


2.27 


3.32 


2.22 


28.66 


1932 


. 2.54 


1.07 


1.89 


2.52 1.61 5.95 


3.27 


3.94 


3.40 


3.06 


1.27 


3.19 


33.71 


1933 


. 2.57 


1.54 


3.21 


3 . 50 9 . 97 .53 


.28 


1.95 


4.88 


4.12 


.71 


.95 


34.21 


1934 


.1.34 


.86 


3.32 


.94 .30 1.90 


4.34 


4.07 


7.85 


1.70 


4.06 


2.09 


32.77 


1935 


. 1.88 


1.51 


2.08 


2.58 7.53 4.29 


4.15 


2.04 


3.55 


2.10 


4.74 


1.25 


37.70 


1936... 


. 1.64 


2.69 


2.06 


2-.62 2.11 .93 


2.15 


2.78 


5.70 


3.75 


3.70 


2.95 


33.08 


1937 


. 5.97 


1.63 


.72 


4.55 3.31 7.80 


4.03 


3.55 


2.83 


3.25 


2.21 


2.19 


42.04 


1938 


.1.27 


3.39 


5.66 


3.66 4.64 3.30 


5.32 


1.55 


2.51 


3.99 


1.09 


1.87 


38.25 


1939 


. 3.58 


5.59 


4.13 


4.48 1.52 4.26 


2.12 


5.10 


.66 


2.85 


1.15 


1.37 


36.81 


1940 


. 1.31 


.77 


1.77 


4.71 4.07 2.52 


2.45 


5.82 


.17 


2.13 


2.88 


1.92 


30.52 


1941... 


. 2.21 


.53 


1.03 


4.25 3.96 2.80 


2.76 


5.00 


4.04 10.64 


3.52 


1.30 


42.04 


1942 


.1.35 


3.45 


2.85 


2.80 3.69 6.46 


5.34 


.99 


4.36 


2.57 


5.25 


2.17 


41.28 


1943 


. .61 


.74 


3.64 


2.76 12.57 4.53 


2.27 


.22 


2.90 


2.51 


2.28 


1.64 


36.67 


1944 


. .33 


3.40 


3.92 


8.29 3.62 2.41 


1.52 


3.45 


5.61 


.99 


1.97 


1.49 


37.00 


1945 


. .87 


1.56 


6.69 


4.43 4.45 5.84 


1.29 


2.65 


6.54 


2.48 


2.67 


2.40 


41.87 


1946 


.1.34 


2.03 


2.83 


3.07 7.59 5.27 


2.62 


4.57 


1.82 


3.23 


4.85 


1.68 


40.90 


Aver 


2.18 


1.96 


3.42 


3.69 4.25 3.67 


3.21 


3.38 


3.96 


2.88 


2.54 


2.26 


37.40 


EFFINGHAM, Effingham county 


1892... 














.49 


.76 


2.98 


1.20 




1893 


.1.10 


3.02 


4.27 


. 5.50 


.60 


1.70 




1.20 




2.25 




1894 


. 1.50 


.30 


3.40 


3.27 




2.72 


4.39 


.70 


1.45 


1.05 




1895 


. 1.05 


.90 


1.65 


2.95 2.40 


1.70 




1.10 




2.50 


5.70 




1896 




1 65 


2.20 


2 . 40 .... 4 . 60 


5.40 


1.45 


3.80 




3.38 


.52 




1897 


. 4.70 


2.73 


7.54 


5.68 2.63 5.19 


2.11 


.56 


.25 


.42 


4.76 


3.14 


39.71 


1898 


. 4.57 


1.65 


12.77 


4.87 3.94 6.98 


3.17 


3.87 


5.26 


4.13 


2.30 


1.84 


55.35 


1899 


. 3.03 


2.47 


2.97 


1.32 5.49 2.30 


2.43 


2.35 


.58 


3.90 


2.37 


3.38 


32.59 


1900 


. .55 


3.97 


1.90 


.89 3.41 9.48 


4.08 


1.58 


4.34 


2.94 


3.27 


1.67 


38.08 


1901 


.1.38 


2.16 


3.32 


2.16 1.29 3.97 


1.32 


1.09 


.40 


1.20 


1.80 


3.00 


23.09 


1902 


. .87 


.40 


1.30 


3.45 4.02 6.71 


2.61 


4.98 


3.44 


2.03 


2.81 


3.40 


36.02 


1903 


2 10 


3.55 


3 50 


2 28 .68 4.57 
















1904 






7.92 


1.20 5.25 3.21 


5.50 




3.98 


.27 


.26 


2.28 




1905 


2 10 


2 09 


2 67 


3 62 3 77 2 59 


3 89 


2 89 












* 
1918 








7 . 25 4 . 39 3 . 80 


4.38 


6.08 


6.24 


2.43 


2.62 


4.90 




1919 


.70 


1.85 


3.51 


1.35 6.32 8.18 


.69 


2.52 


2.67 


9.60 


3.80 


.92 


42.11 


1920 


. 1.71 


1.84 


3.63 


3.26 7.90 1.62 


3.72 


4.42 


2.80 


3.08 


.68 


3.68 


38.34 


1921... 


. 1.81 


.74 


6.82 


3.44 2.60 4.10 


.33 


4.95 


5.88 


.95 


2.11 


3.34 


37.07 


1922 


. 1.21 


1.17 


8.80 


8.91 2.65 2.21 


4.56 


2.85 


.46 


3.02 


2.11 


4.01 


41.96 


1923 


. 2.51 


1.29 


4.48 


4.09 4.65 4.31 


5.11 


5.91 


3.64 


3.07 


1.83 


4.13 


45.02 


1924 


. 2.45 


1.92 


2.14 


1.10 7.09 3.51 


1.70 


3.14 


4.33 


.68 


2.45 


4.14 


34.65 


1925 


. .71 


1.19 


2.57 


1.35 1.79 5.60 


1.56 


4.00 


2.30 


3.01 


4.56 


1.76 


30.40 


1926 


. 1.72 


2.46 


3.26 


2.93 1.89 2.59 


1.31 


3.01 




5.89 


4.16 


1.87 




1927 


. 3.71 


1.41 


6.83 


8.55 9.84 4.60 


4.29 


5.46 


4.39 


6.17 


5.54 


4.39 


65.18 


1928 


. 2.34 


4.14 


1.55 


2.57 4.04 8.15 


3.24 


7.13 


1.51 


3.75 


2.07 


3.61 


44.10 


1929 


. 3.98 


1.08 


4.54 


7.90 10.01 4.99 


3.90 


2.52 


1.31 


4.91 


2.62 


5.37 


53.13 


1930 


. 8.32 


2.78 


1.42 


2.40 2.14 3.17 


1.21 


1.27 


4.94 


2.35 


2.00 


.98 


32.98 


1931... 


.23 


1.90 


3.12 


2.08 2.82 3.40 


2.88 


5.09 


4.76 


5.25 


5.85 


4.25 


41.63 


1932 


.3.72 


.92 


1.91 


1.73 1.12 5.65 


3.17 


6.49 


4.41 


2.76 


3.53 


4.25 


39.66 


1933 


. 2.80 


3.06 


7.49 


5.03 8.92 1.12 


.87 


3.48 


2.29 


2.64 


.75 


1.98 


40.43 


1934 


. 1.89 


1.07 


3.46 


2.08 .76 2.54 


6.11 


6.91 


4.87 


1.41 


6.18 


1.85 


39.13 


1935 


. 2.58 


.71 


5.85 


1.66 10.11 4.05 


2.38 


.41 


3.46 


2.94 


5.16 


1.26 


40.57 


1936... 


. 1.45 


2.31 


2.72 


4.02 1.28 1.12 


4.55 


1.44 


5.65 


3.11 


3.60 


2.40 


33.65 


1937 


. 5.62 


1.80 


1.63 


4.64 2.32 7.34 


2.56 


3.29 


2.43 


4.40 


1.65 


1.84 


39.52 


1938 


. 1.64 


3.70 


10.53 


2.43 4.74 3.71 


6.17 


4.06 


2.57 


1.15 


2.87 


2.10 


45.67 


1939 


. 5.28 


5.34 


2.96 


5.25 1.30 5.33 


1.82 


6.71 


.90 


1.16 


2.22 


1.81 


40.08 


1940 


. 1.96 


1.45 


2.15 


6.22 4.00 4.16 


1.54 


1.59 


.32 


3.20 


3.15 


2.70 


32.44 


1941... 


. 1.53 


.54 


.58 


3.70 2.21 5.77 


1.28 


3.41 


3.77 


8.83 


3.62 


.99 


36.23 


1942 


. 1.37 


2.99 


3.51 


2.63 3.86 10.78 


5.35 


5.07 


1.30 


2.78 


5.50 


1.72 


46.86 


1943 


. .44 


.74 


2.35 


3.85 12.89 4.56 


5.71 


.02 


1.35 


2.55 


2.95 


2.08 


39.49 


1944 


. .10 


1.69 


2.45 


5.55 3.57 .86 


1.37 


5.83 


3.46 


.48 


2.29 


1.74 


29.39 


1945 


. .91 


2.51 


10.32 


4.56 5.12 11.18 


.74 


4.53 


6.15 


2.84 


3.13 


1.78 


53.77 


1946 


.1.60 


3.04 


2.70 


2.76 12.52 3.62 


3.16 


5.40 


2.19 


3.33 


6.23 


2.27 


48.72 


Aver 


, 2.24 


2.01 


4.11 


3.59 4.59 4.60 


2.96 


3.59 


3.04 


2.96 


3.08 


2.62 


39.39 



1949] CLIMATE OF ILLINOIS: APPENDIX B 241 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


FAIRVIEW, Fulton 


county 


1911... 




















2.44 




1912 


.17 


1.10 


1.66 


5.07 2.63 


1.09 4.28 


1.90 


4.22 


4.29 


1.79 


.75 


28.95 


1913 


. 1.57 


3.03 


2.97 


2.70 2.13 


2.12 .10 


1.38 


1.43 


3.03 


2.45 


.82 


23 . 73 


1914 


.1.19 


1.41 


3.05 


1.80 1.71 


2.24 .45 


1.65 


4.34 


2.23 


.16 


1.62 


21.85 


1915 


. 1.82 


2.02 


.61 


1.58 6.10 


2.96 7.47 


2.79 


4.99 


1.05 


2.98 


1.19 


35.56 


1916 


. 7.40 


.36 


2.44 


2.48 6.93 


4.29 .46 


3.52 


4.57 


2.95 


2.42 


.78 


38.60 


1917 


. 1.02 


.21 


2.64 


4.01 2.64 


8.53 1.53 


2.89 


2.42 


2.44 


.08 


.48 


28.89 


1918 


. .88 


1.95 


.74 


3.80 5.00 


6.55 3.91 


6.46 


1.72 


3.63 


1.99 


2.16 


38.79 


1919 


. .23 


2.26 


3.00 


1.39 4.46 


5.45 3.61 


2.88 


3.53 


1.68 


3.55 


.27 


32.31 


1920 


. .84 


.31 


4.80 


5.16 3.67 


2.33 1.56 


1.55 


.74 


1.75 


.93 


1.67 


25.31 


1921 


. 1.46 


.22 


4.31 


5.17 1.70 


3.72 1.17 


3.04 


4.09 


2.68 


1.89 


1.71 


31.16 


1922 


.1.17 


2.04 


4.27 


3.12 4.53 


1.71 4.45 


1.02 


3.27 


1.06 


4.08 


1.04 


31.76 


1923 


. 1.07 


.77 


3.30 


1.00 2.97 


2.49 3.43 


2.32 


3.17 


2.94 


1.39 


1.88 


26.73 


1924 


. 1.35 


1.30 


1.96 


1.69 1.88 


8.30 5.18 


5.51 


2.92 


1.33 


.73 


2.48 


34 . 63 


1925 


. .39 


1.87 


1.19 


3.36 1.91 


4.17 3.03 


4.09 


3.61 


2.63 


2.03 


1.28 


29.56 


1926... 


. .96 


1.84 


2.17 


2.26 2.30 


8.83 4.70 


3.76 


12.98 


2.68 


3.95 


1.01 


47.44 


1927 


. 1.24 


2.45 


3.24 


5.72 9.57 


5.17 2.33 


2.13 


7.16 


4.46 


3.30 


2.26 


49.03 


1928 


. .20 


1.14 


.78 


2.93 2.46 


6.02 4.18 


4.27 


3.23 


3.64 


4.48 


1.56 


34.89 


1929 


. 3.49 


.69 


3.97 


4.65 2.74 


5.53 8.71 


2.50 


1.99 


3.30 


2.06 


.94 


40.57 


1930 


. 2.28 


1.58 


.90 


3.67 2.39 


1.96 1.38 


1.45 


2.18 


2.99 


2.98 


.37 


24.13 


1931 


. .40 


.86 


2.45 


2.33 4.25 


2.82 3.10 


3.96 


5.56 


3.15 


5.92 


2.27 


37.07 


1932 


. 1.63 


1.24 


2.01 


1.37 4.01 


4.28 3.82 


5.17 


1.89 






3.51 




1933 


. 1.69 


1.10 


2.47 


3.23 8.37 


.94 1.89 


3.63 


4.40 


1.98 


.08 


1.06 


30.84 


1934 


. .60 


.71 


1.67 


1.69 .85 


3.64 4.11 


3.58 


5.69 


1.63 


4.94 


1.09 


30.20 


1935 


. 1.52 


2.34 


5.01 


2.24 10.47 


6.97 4.81 


1.04 


5. -15 


1.63 


4.37 


1.53 


47.08 


1936 


. 1.49 


1.52 


.93 


1.40 2.75 


.71 1.77 


4.17 


10.57 


2.92 


.92 


2.74 


31.89 


1937 


. 3.32 


.85 


.96 


3.81 3.18 


2.54 4.29 


2.38 


1.66 


2.97 


1.16 


1.87 


28.99 


1938 


. 5.02 


1.96 


4.51 


4.05 3.42 


5.65 3.85 


2.88 


2.54 


1.26 


1.93 


1.41 


38.48 


1939 


. 2.36 


1.73 


3.47 


5.63 4.33 


4.68 2.57 


5.08 


.25 


3.92 


.87 


.61 


35.50 


1940 


. 1.20 


.93 


2.08 


3.07 3.51 


1.47 1.77 


4.88 


T 


2.45 


2.17 


1.60 


25.13 


1941... 


. 2.86 


.69 


1.06 


3.44 4.40 


4.28 3.26 


3.38 


7.16 


9.81 


1.94 


1.35 


43.63 


1942 


. .82 


4.70 


1.22 


2.85 4.57 


3.94 5.97 


1.63 


2.23 


1.44 


4.42 


3.11 


36.90 


1943 


. 1.48 


.65 


1.16 


4.43 7.05 


4.08 2.97 


2.00 


1.57 


1.66 


1.03 


.72 


28.80 


1944 


. .49 


1.57 


6.67 


6.97 5.76 


2.04 1.11 


2.50 


4.05 


2.40 


2.84 


1.10 


37.50 


1945 


. .62 


1.05 


4.03 


5.16 5.76 


7.62 1.44 


.79 


7.75 


.94 


1.54 


2.07 


38.77 


1946 


. 2.96 


.53 


3.34 


1.52 5.41 


9.35 1.00 


3.19 


1.73 


3.30 


4.64 


2.31 


39.28 


Aver 


.1.63 


1.42 


2.60 


3.28 4.17 


4.24 3.13 


3.01 


3.85 


2.71 


2.41 


1.53 


33.98 


GOLDEN, Adams county a 


1856 






.25 


3.13 8.61 


1.10 5.99 


1.53 


1.26 


4.52 


4.97 


6.06 




1857 


.39 


4.80 


2.56 


.89 2.03 


3.70 1.45 


4.10 


2.72 


2.32 


2.43 


1.36 


28.75 


1858 


. 2.05 


1.52 


3.17 


7.22 9.51 


5.86 7.93 


2.33 


2.46 


3.01 


3.11 


2.88 


51.05 


1859 


. 3.88 


3.63 


4.39 


3.35 7.81 


6.78 1.22 


5.43 


3.72 


1.80 


1.79 


1.08 


44.88 


1860 
























1861 


. 1.68 


2.94 


3.63 


3.96 3.89 


4.99 1.37 


1.57 




2.31 


.41 


1.49 




1862 


.4.63 


.64 


1.80 


6.68 1 44 


6 35 




7 61 


1 46 


2 09 


6 32 




1863 


. 2.80 




2.21 


2.81 


.27 2.62 


2.46 


3.43 


3.08 


.61 


5.99 




1864 


. 1.58 


.58 


2.26 


6.76 2.16 


1.42 5.26 


1.29 


4.16 


2.90 


3.88 


3.55 


35.80 


1865 


. .15 


2.81 


4.02 


5.77 .69 


6.77 9.58 


1.69 


5.81 


3.34 


.12 


1.25 


42.00 


1866 


. 3.52 


1.42 


1.77 


4.78 2.12 


1.74 3.19 


3.28 


10.30 


3.83 


.51 


2.88 


39.34 


1867 


. 1.85 


2.53 


1.68 


2.00 4.98 


3.65 3.70 


1.86 


1.78 


.99 


1.33 


1.30 


27.65 


1868 


. .92 


.79 


5.62 


5.36 7.03 


2.05 5.42 


4.36 


4.29 


1.75 


5.01 


2.57 


45.17 


1869 


. 2.16 


2.56 


.95 


4.48 5.18 


8.13 7.77 


6.57 


1.82 


2.19 


3.42 


2.07 


47.30 


1870 


. 2.11 


.12 


5.61 


.63 1.73 


2.35 2.01 


5.41 


5.78 


5.19 


1.39 


1.40 


33.73 


1871 


. 4.49 


1.59 


3.85 


3.05 2.60 


4.70 2.81 


6.48 


1.55 


5.62 


2.76 


1.31 


40.81 


1872 


. .20 


.85 


3.06 


2.93 3.33 


4.96 6.27 


2.72 


2.56 


.99 


1.04 


1.41 


30.32 


1873 


. 3.93 


1.24 


'.84 


7.41 3.74 


1.41 6.23 


.46 


5.32 


3.85 


1.57 


7.63 


43.63 


1874 


. 2.88 


1.12 


1.57 


2.00 


6.61 3.42 


4.95 


2.18 


.98 


2.22 


1.07 




1875 


. .32 


2.00 


2.83 


1.76 6.09 


5.59 14.04 


1.30 


6.64 


2.35 


.52 


3.89 


47.33 


1876 


. 1.89 


1.57 


3.24 


4.35 4.47 


4.06 4.97 


7.98 


10.67 


2.40 


1.78 


.20 


47.58 


1877 


. .82 


.14 


4.62 


2.58 3.96 


6.96 6.24 


3.08 


3.27 


9.27 


2.89 


4.00 


47.83 


1878 


.1.14 


3.31 


5.16 


3.28 4.91 


2.89 3.85 


6.06 


1.13 


2.85 


1.17 


3.82 


39.57 


1879 


. .73 


.79 


1.91 


1 . 26 1 . 63 


3.02 3.15 


5.20 


2.06 


.19 


3.97 


1.51 


25 . 42 


1880 


. 2.51 


2.08 


2.16 


5.74 5 . 38 


2.64 1.35 


3.34 


2.26 


1.3S 









Data from 1856 thru 1880 are for Augusta, 9 miles northeast of Golden; and those from 1913 
thru 1919 are for Camp Point, 5 miles southwest of Golden. 



242 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GOLDEN, Adams county, 


concluded 










* 
1913 .. 








. 3.38 


4.14 


1.36 


1.02 1.64 


2.71 


2.28 


1.39 




1914 


.80 


2.01 


2.27 


2.64 1.14 


3.45 


1.46 


3.07 4.28 


1.96 


.06 


2.25 


25.39 


1915 


. 2.47 


2.15 


.62 


2.08 6.57 


8.50 


7.73 


1.31 6.12 


.55 


3.81 


2.81 


44.72 


1916 


. 6.09 


.87 


2.09 


4.52 7.43 


3.89 


.74 


5.17 1.86 


2.30 


1.97 


1.86 


35.79 


1917 


. 1.12 


.37 


3.84 


4.87 4.20 


8.37 


1.64 


2.23 4.62 


1.54 


.33 


.96 


34.09 


1918 


. 1.20 


1.36 


.41 


4.34 7.58 


2.55 


1.49 


4.42 3.06 


4.45 


2.08 


1.91 


34.85 


1919 


. .03 


2.07 


1.90 






1.36 


3.80 4.75 


1.92 








1920 


.47 


.20 


4.93 


5 . 89 


2.38 


3.42 


1 . 04 3 . 06 


1.49 


.97 






1921... 


. 1.50 


.28 


4.04 


5.56 2.47 


3.73 


1.49 


5.42 9.19 


2.80 


1.62 


1.36 


39.46 


1922 


. 1.29 


1.42 


5.20 


4.16 2.74 


.45 


3.28 


2.11 4.08 


1.38 


4.37 


.63 


31.11 


1923 


. .84 


.44 


3.43 


1.98 2.67 


3.24 


2.31 


3.63 5.33 


2.06 


1.53 


1.75 


29.21 


1924 


. 1.29 


2.03 


2.91 


1.72 3.34 


6.78 


3.66 


2.67 2.45 


2.00 


.49 


2.94 


32.28 


1925 


. .22 


1.38 


1.71 


4.47 1.95 


6.15 


4.32 


5.49 4.41 


3.65 


2.37 


1.33 


37.45 


1926... 


.1.18 


2.10 


2.05 


2.23 2.20 


7.89 


5.34 


3.35 10.04 


2.67 


3.43 


.87 


43.35 


1927 


. 1.42 


1.53 


5.39 


5.55 4.72 


3.52 


2.72 


2.54 3.01 


5.50 


3.02 


2.08 


41.00 


1928 


. .35 


1.18 


1.79 


2.43 2.83 


5.33 


5.99 


1.60 4.29 


4.16 


3.00 


1.37 


34.32 


1929 


. 3.56 


.77 


7.00 


3.90 7.42 


5.09 


8.96 


1.30 2.12 


4.06 


1.70 


.68 


46.56 


1930 




2.16 


1.19 


3.06 1.87 


3.65 


.34 


1 . 65 3 . 60 


2.62 


3.23 


.47 




1931... 


.36 


1.44 


2.49 


2.20 6.55 


5.88 


3.29 


1.63 4.45 


3.41 


5.05 


2.48 


39.23 


1932 


. 1.45 


1.09 


1.58 


.45 4.26 


5.27 


3.47 


8.51 2.41 


2.98 


1.08 


4.53 


37.08 


1933 


. 2.27 


.52 


3.04 


2.02 6.65 


3.64 


3.00 


3.02 2.41 


2.06 


.13 


1.29 


30.05 


1934 


. .79 


.76 


1.53 


2.00 .77 


2.51 


.31 


2.18 6.51 


2.57 


5.51 


1.21 


26.65 


1935 


. 1.60 


1.63 


2.46 


2.48 12.67 


5.50 


5.64 


1.06 3.66 


1.83 


4.24 


.91 


43.68 


1936 


. 1.29 


2.65 


.97 


1.22 3.91 


2.51 


.60 


.71 10.81 


2.36 


.95 


2.35 


30.33 


1937 


. 4.08 


.46 


.68 


3.16 2.86 


2.13 


4.86 


2.09 4.78 


1.34 


1.47 


1.78 


29.69 


1938 


. 3.97 


1.49 


5.99 


4.08 5.06 


4.21 


3.30 


3.45 3.42 


1.69 


3.21 


2.40 


42.27 


1939 


. 1.24 


1.58 


4.58 


5.90 2.42 


4.25 


3.27 


7.23 .26 


1.17 


1.20 


.71 


33.81 


1940 


. 1.32 


.51 


1.73 


4.35 1.60 


4.03 


.62 


5.33 .13 


3.38 


2.43 


1.81 


27.24 


1941... 


. 3.29 


.43 


.66 


3.51 1.82 


4.75 


2.39 


3.32 7.17 


9.14 


1.59 


1.50 


39.57 


1942 


. .36 


4.09 


1.27 


3.38 4.77 


5.36 


8.98 


1.17 4.96 


1.07 


5.64 


2.96 


44.01 


1943 


. .93 


.62 


.88 


3.72 8.18 


2.76 


5.57 


1.84 1.44 


2.57 


.91 


1.66 


31.08 


1944 


. .30 


1.82 


5.35 


8.78 4.00 


2 gg 


2.75 


4.42 4.85 


3.46 


3.32 


1.10 


42.81 


1945 


. .96 


1.09 


5.97 


4.52 4.32 


7.71 


.54 


2.68 9.64 


1.15 


1.39 


2.93 


42.90 


1946 


. 2.80 


.55 


3.44 


3.64 5.69 


1.70 


2.34 


6.91 2.41 


4.44 


4.18 


1.80 


39.90 


Aver 


. 1.77 


1.49 


2.85 


3.65 4.25 


4.25 


3.83 


3.35 4.21 


2.78 


2.28 


2.20 


36 91 


GRAFTON, Jersey county 


1894.. . 








2.33 2.03 


1.94 


1.35 


2.15 3.75 


1.89 


1.90 


3.04 




1895 


. .38 


.38 


1.58 


1.30 2.59 


2.96 


7.51 


1.92 2.78 


.53 


4.61 


7.23 


33.77 


1896 


. 1.45 


2.47 


1.69 


2.80 6.46 


7.03 


5.09 


1.93 3.37 


1.16 


1.02 


.50 


34.97 


1897 


. 2.87 


2.01 


6.97 


6.51 1.17 


4.99 


3.73 


1.24 .11 


.07 


3.81 


2.72 


36.20 


1898 


. 5.90 


1.30 


8.01 


3.18 9.03 


3.49 


5.08 


2.03 4.53 


4.35 


2.31 


1.34 


50.55 


1899 


.1.12 


2.52 


3.73 


2.91 8.02 


2.58 


2.27 


3.31 1.46 


4.75 


2.17 


2.36 


37.20 


1900 


. .76 


4.52 


2.05 


2.08 6.67 


2.54 


4.04 


2.46 4.64 


1.78 


2.29 


.96 


34.79 


1901... 


. 1.78 


1.95 


2.46 


1.44 .38 


1.52 


2.10 


1.08 .45 


1.86 


1.68 


3.88 


20.58 


1902 


. 1.03 


.96 


3.95 


2.67 1.41 


8.48 


1.30 


3.58 3.74 


1.91 


2.43 


4.48 


35.94 


1903 


.1.67 


3.28 


3.44 


3.40 2.47 


3.40 


1.34 


4.44 5.48 


1.85 


.53 


1.64 


32.94 


1904 


. 3.50 


.43 


6.17 


5.16 3.33 


5.99 


5.34 


4.58 4.18 


1.35 


.32 


1.84 


42.19 


1905 


. 1.40 


.67 


2.09 


2.94 2.98 


.49 


5.09 


4.21 4.46 


8.17 


1.54 


2.19 


36.23 


1906... 


. 1.86 


3.17 


4.08 


2.34 4.44 


5.10 


1.60 


4.26 5.32 


1.41 


3.92 


3.40 


40.90 


1907 


. 5.52 


1.42 


2.38 


3.14 2.62 


5.54 


6.74 


3.83 .55 


2.32 


1.64 


1.72 


37.42 


1908 


. 2.04 


3.86 


2.78 


6.75 4.20 


2.86 


5.46 


.72 1.74 


.54 


2.08 


1.44 


34.47 


1909 


. 2.04 


3.64 


2.52 


5.53 5.40 


3.90 


6.08 


1.28 4.17 


3.92 


6.74 


2.06 


47.28 


1910 


. 3.48 


3.88 


.42 


2.92 5.26 


3.34 


6.60 


3.08 7.27 


4.29 


.68 


1.70 


42.92 


1911... 


.70 


2.79 


2.46 


4.77 1.50 


2.08 


2.17 


3.47 5.49 


3.10 


3.10 


2.37 


34.00 


1912 


. 1.48 


3.39 


5.74 


7.66 4.75 


4.18 


3.17 


3.52 3.10 


1.95 


2.70 


.42 


42.06 


1913 


. 5.99 


1.01 


5.61 


3.30 .56 


3.04 


1.92 


.24 5.04 


5.18 


3.52 


1.58 


36.99 


1914.. .. 


. 2.43 


3.10 


.93 


3 53 43 


.65 


2 92 


3 31 2 91 


3 78 


1 73 






1915... 




1.98 


.66 


1.67 8.05 


6.00 


4.28 


8.32 3.03 


.69 


2.77 


3.05 





1949] CLIMATE OF ILLINOIS: APPENDIX B 243 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GRAFTON, Jersey county, concluded 


1916... 


. 8.31 


1.35 


2.10 


2.12 


5.22 


2.81 


.08 8.36 4.59 


2.46 


2.65 


1.06 


41.11 


1917 


.1.58 


.64 


2.64 


5.42 


5.51 


1.49 


3.61 2.68 2.37 


1.66 


.28 


.62 


28.50 


1918 


. 1.67 


.65 


.57 


6.99 


4.65 


2.56 


1.08 2.69 5.41 


3.97 


2.72 






1919 


. .50 


1.35 


2.33 


1.23 


5.72 


3.49 


.88 3.58 5.98 


6.59 


2.89 


.37 


34.91 


1920 


. .72 


.56 


4.06 


4.54 


4.58 


1.32 


.81 7.83 4.61 


2.32 


.77 


2.64 


34.76 


1921 


. 1.88 


1.37 


6.51 


6.49 


4.10 


6.03 


.41 4.51 5.86 


2.23 


2.24 


3.44 


45.07 


1922 


. 1.12 


.84 


6.12 


8.79 


2.07 


3.56 


2.52 1.55 1.80 


1.36 


2.86 


3.36 


35.95 


1923 


. 1.08 


2.62 


4.55 


3.60 


3.74 


5.84 


1.72 8.22 6.73 


4.48 


1.94 


5.26 


49.78 


1924 


. 1.57 


1.72 


2.84 


.77 


5.69 


7.62 


4 . 33 4 . 54 3.19 


1.14 


2.59 






1925 


. .79 


1.35 


3.55 


2.31 


1.08 


4.73 


2.80 2.98 2.00 


6.13 


3.97 


1.30 


32.99 


1926... 


. 1.50 


3.51 


3.56 


2.69 


2.04 


4.00 


2.01 7.55 7.35 


5.17 


3.50 


1.71 


44.59 


1927 


.1.10 


.40 


5.33 


10.42 


6.44 


3.84 


3.23 3.03 3.67 


4.08 


6.29 


2.72 


50.55 


1928 


1.31 


1 99 


1.46 


4 50 


2 23 




3 07 2 88 2 26 


4 07 


1 85 


1 92 




1929 


. 3.55 


1.06 


5.48 


6.43 


10.97 


5.68 


2.60 3.61 3.21 


4.77 


2.08 


2.29 


51.73 


1930 


. 6.60 


1.84 


1.21 


1.21 


1.66 


2.71 


1.32 .78 3.81 


2.13 


3.09 


.75 


27.11 


1931... 


.55 


2.21 


2.63 


2.63 


4.63 


1.44 


3.10 4.79 3.35 


4.40 


3.67 


2.58 


35.98 


1932 


. 3.20 


1.05 


1.31 


2.79 


.78 


5.63 


2.96 5.49 1.29 


2.95 


1.66 


3.05 


32.16 


1933 


.3.26 


1.88 


5.89 


3.74 


9.62 


.03 


.47 1.29 3.47 


3.18 


.52 


1.53 


34.88 


1934 


. 1.31 


1.06 


3.28 


1.50 


.33 


1.72 


1.66 4.46 6.36 


2.37 


4.20 


2.10 


30.35 


1935 


. 2.33 


1.26 


4.73 


2.40 


9.08 


5.69 


2.89 .25 3.14 


2.82 


4.76 


1.10 


40.45 


1936... 


.90 


1.82 


1.04 


2.36 


.99 


1.63 


.13 .94 5.45 


3.50 


3.87 


2.99 


25.62 


1937 


. 5.57 


1.48 


1.65 


4.97 


3.98 


4.99 


.45 .79 .86 


2.87 


1.58 


2.53 


31.72 


1938 


. 1.40 


2.88 


6.69 


4.49 


4.15 


4.48 


4.18 1.11 3.35 


1.30 


3.60 


2.59 


40.22 


1939 


. 3.39 


3.63 


1.91 


6.01 


1.12 


4.41 


4.21 6.76 .86 


1.55 


1.82 


2.18 


37.85 


1940 


. 1.61 


1.48 


2.81 


2.34 


3.35 


3.27 


.40 4.20 T 


1.23 


1.90 


1.91 


24.50 


1941 


. 3.69 


.43 


.89 


5.90 


2.76 


2.43 


1.87 2.92 4.91 


8.48 


3.38 


.97 


38.63 


1942 


. 1.45 


2.88 


1.63 


2.84 


4.23 


10.97 


11.98 3.07 1.46 


3.78 


7.35 


4.28 


55.92 


1943 


. .53 


1.00 


2.91 


1.77 


13.27 


4.03 


1.24 3.64 3.86 


2.58 


1.98 


2.21 


39.02 


1944 


. .46 


2.45 


3.62 


8.82 


3.63 


2.87 


2.81 4.20 3.45 


1.26 


1.48 


1.64 


36.69 


1945 


. 1.25 


3.17 


6.46 


5.87 


2.35 


6.33 


1.09 3.46 10.51 


1.57 


1.59 


1.85 


45.50 


1946 


. 1.76 


2.54 


2.77 


1.66 


5.77 


3.45 


4.34 13.79 1.50 


4.26 


9.25 


2.16 


53.25 


Aver 


. 2.22 


1.95 


3.31 


3.89 


4.14 


3.87 


3.01 3.60 3.66 


2.97 


2.75 


2.26 


37 63 


GRIGGSVILLE 


, Pike county 










1882 


.1.32 


1.00 


3.50 


4.00 


6.50 


7.37 


3.00 2.37 1.62 


4.12 


2.62 


1.62 


39.04 


1883 


. 1.00 


5.50 


1.50 


4.00 


3.37 


6.87 


2.25 1.75 .87 


6.37 


3.25 


.75 


37.48 


1884 . . . 


. 1.25 


2.37 




2 50 


4 37 


5 25 


2 37 3 12 3 24 


4 25 


1 87 


2 50 




1885 


. 2.12 


.87 


.62 


6.00 


2.62 


4.50 


.87 2.62 5.75 


2.75 


1.50 


1.75 


31.97 


1886... 


. 2.71 


2.50 


1.50 


2.37 


2.60 


4.42 


.20 3.08 6.36 


.77 


2.10 


.66 


29.27 


1887 


. 1.40 


4.63 


1.57 


2.36 


2.89 


1.97 


2.72 .61 4.36 


.52 


2.32 


4.05 


29.39 


1888 


. 3.11 


2.40 


3.84 


1.25 


7.83 


9.77 


6.81 2.86 4.00 


1.88 


4.30 


2.47 


50.52 


1889 


2.84 


2.40 


1 05 




9 38 


4 93 


2 87 76 4 56 


4 47 


1 12 


2 02 




1890 


. 3.31 


1.43 


2.75 


2.85 


3.31 


5.32 


1.47 1.85 2.47 


1.48 


1.40 


.28 


27.92 


1891... 


.87 


3.52 


2.25 


3.61 


2.42 


1.76 


.98 1.75 1.53 


2.11 


4.15 


.87 


25.82 


1892 


. 2.05 


3.73 


2.67 


6.97 


8.93 


1.85 


5.94 .85 3.46 


1.52 


3.20 


.92 


42.09 


1893 


. .42 


2.82 


6.22 


7.69 


5.65 


3.80 


3.38 .35 1.37 


.33 


1.25 


1.38 


34.66 


1894 


. 2.06 


2.36 


2.15 


2.85 


2.30 


2.97 


.78 1.19 2.78 


78 


1.48 


1.32 


23.02 


1895 


. 1.36 


.22 


3.15 


2.35 


2.46 


3.94 


6.25 2.63 3.51 


.35 


2.95 


6.21 


35.38 


1896... 


. 1.50 


2.16 


.56 


3.05 


8.10 


3.29 


8.10 2.72 9.32 


1.60 


1.65 


.38 


42.43 


1897 


. 6.74 


1.39 


4.20 


4.25 


2.91 


5.45 


4.50 2.16 .46 


.25 


3.38 


2.34 


38.03 


1898 


.4.46 


2.19 


5.78 


4.95 


8.30 


4.94 


3.56 4.49 6.83 


3.01 


3.66 


.97 


53.14 


1899 


. .42 


1.54 


3.81 


1.80 


13.10 


1.97 


3.16 4.43 3.79 


3.33 


2.16 


1.27 


40.78 


1900 


. 1.78 


6.01 


1.54 


1.81 


4.20 


2.40 


3.59 1.81 5.50 


2.80 


1.66 


.45 


33.55 


1901... 


. 2.06 


1.51 


3.25 


1.46 


.46 


3.55 


2.74 .22 3.65 


1.80 


.77 


2.82 


24.29 


1902 


. .56 


1.53 


2.67 


3.99 


4.21 


7.33 


2.89 7.20 3.36 


2.58 


3.74 


2.65 


42.71 


1903 


.1.30 


2.62 


3.20 


4.59 


3.34 


3.14 


2.10 4.52 4.89 


2.53 


.68 


1.05 


33.96 


1904 


. 3.93 


1.60 


5.60 


5.92 


5.86 


5.05 


5.09 5.41 6.26 


.50 


.15 


1.02 


46.39 


1905 


. 1.60 


1.50 


1.45 


2.85 


2.67 


1.60 


2.95 4.67 5.25 


4.27 


1.95 


1.69 


32.45 


1906 


. 2.74 


2.26 


3.05 


2.71 


2.83 


2.74 


.85 4.40 6.56 


1.98 


2.70 


2.65 


35.47 


1907 


.5.38 


.49 


3.27 


3.25 


3.35 


5.00 


5.82 6.97 2.24 


1.70 


1.80 


.52 


39.79 


1908 


. 1.05 


2.75 


1.94 


5.66 


5.60 


3.69 


6.53 1.30 .88 


.10 


1.41 


1.28 


32.19 


1909 


. 1.81 


2.25 


1.53 


4.47 


7.50 


3.27 


4.11 .33 4.64 


4.36 


3.30 


1.21 


38.78 


1910 


1.07 


.76 


T 


2.72 


6.86 


2.74 


4.45 .85 4.57 


1.65 


1.36 


.78 


27.81 



244 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GRIGGSVTXLE 


, Pike 


county, concluded 


1911... 


. 1.47 


1.97 


1.97 


4.57 1.21 


1.19 


2.92 


3.68 13.77 


3.00 


2.15 


1.47 


39.37 


1912 


. .25 


1.18 


2.75 


4.45 4.17 


5.26 


2.36 


3.43 4.29 


5.10 


1.45 


.72 


35.41 


1913 


. 2.26 


2.19 


4.65 


3 . 56 1 . 22 


4.54 


.64 


.35 3.10 


3 87 




.79 




1914 


.1.64 


2.24 


1.03 


2.10 .37 


.85 


1.66 


3.38 7.56 


3.65 


.36 


2.06 


26.90 


1915 


. 2.09 




.56 


2.93 5.94 


14.77 


6.52 


6.87 8.89 


.76 


3.77 


2.10 




1916... 


. 6.11 


.71 


1.56 


1.41 7.13 


5.52 


1.83 


7.78 1.42 


.92 


2.09 


1.46 


37.94 


1917 


. .53 


.19 


3.28 


5.84 4.41 


7.44 


3.72 


2.00 3.63 


1.30 


.29 


.49 


33.12 


1918 


. 1.03 


.74 


.21 


5.58 4.21 


2.10 


1.24 


3.04 4.04 


3.69 


2.80 


1.95 


30.63 


1919 


. .06 


1.80 


2.81 


1.97 6.66 


1.74 


1.25 


3.22 3.14 


7.33 


2.66 


.39 


33.03 


1920 


. .86 


.28 


3.78 


3.20 5.67 


2.58 


2.86 


4.27 5.97 


2.47 


.60 


1.30 


33.84 


1921 


.1.12 


.26 


2.46 


5.31 2.54 


6.96 


1.69 


3.96 8.69 


2.09 


2.04 


2.20 


39.32 


1922 


. 1.45 


.69 


4.38 


7.08 3.36 


.61 


2.06 


1.64 2.39 


1.11 


4.76 


1.13 


30.66 


1923 


. .97 


.94 


3.24 


2.04 3.68 


4.14 


2.70 


7.67 3.31 


3.40 


1.82 


3.01 


36.92 


1924 


. 1.12 


1.46 


3.25 


1.41 3.32 


6.71 


3.29 


2 . 52 3 . 26 


2.38 


1.18 






1925 


. .49 










5.00 


5.03 3.74 


4.11 


3.34 


1.06 




1926... 


. 1.34 


1.99 


2.81 


4.33 1.89 


5.84 


3.40 


4.30 16.83 


4.84 


4.26 


1.86 


53.69 


1927 


. 1.67 


1.00 


7.98 


5.47 5.43 


4.76 


2.58 


3.83 5.56 


2.49 


4.16 


2.31 


47.24 


1928 


. .56 


1.60 


.94 


3.74 3.04 


6.00 


4.10 


2.99 4.24 


5.07 


3.78 


1.85 


37.91 


1929 


.4.12 


.41 


4.00 


4.64 6.96 


4.04 


5.40 


1.97 2.84 


5.10 


1.65 


1.33 


42.46 


1930 


. 5.50 


1.91 


.90 


1.33 1.77 


5.07 


.51 


1.86 3.70 


2.31 


2.35 


.50 


27.71 


1931... 


.11 


1.99 


3.27 


1.63 6.05 


2.93 


4.40 


5.35 3.28 


2.40 


4.57 


3.44 


39.42 


1932 


.1.65 


1.18 


1.85 


1.38 2.21 


5.33 


4.35 


5.34 2.97 


3.17 


1.35 


3.49 


34.27 


1933 


. 2.49 


.62 


4.55 


3.32 6.12 


2.45 


.89 


2.61 3.79 


2.17 


.28 


1.65 


30.94 


1934 


.1.33 


.90 


2.55 


1 . 60 .30 


3.93 


.09 


1.70 7.70 


1.75 


5.34 


2.04 


29.23 


1935 


. 2.02 


2.26 


3.24 


3.13 11.08 


5.07 


3.21 


.97 2.75 


3.55 


4.36 


.85 


42.49 


1936 


. 1.48 


1.19 


.56 


1.37 1.88 


2.27 


.49 


.79 10.38 


1.76 


2.00 


2.54 


26.71 


1937 


. 5.06 


1.77 


.78 


4.21 3.38 


3.55 


2.09 


1.94 3.28 


1.88 


1.72 


1.91 


31.57 


1938 


. 3.47 


2.38 


4.57 


5.56 3.69 


5.47 


3.05 


3.38 1.04 


1.29 


2.55 


2.90 


39.35 


1939 


. 2.69 


2.87 


3.43 


4.98 2.57 


5.54 


2.95 


5.77 .24 


2.11 


1.46 


1.71 


36.32 


1940 


. 1.01 


1.02 


2.49 


2.46 2.63 


2.69 


.24 


3.40 .10 


3.17 


2.80 


1.34 


23.35 


1941 


. 3.63 


.53 


.91 


5.05 2.91 


3.54 


4.06 


1.61 6.86 


12.70 


2.43 


1.09 


45.32 


1942 


. .93 


4.86 


3.37 


3.15 7.23 


10.24 


6.09 


1.20 2.98 


1.55 


5.70 


3.38 


50.68 


1943 


. 1.48 


.82 


1.51 


3.22 10.69 


3.34 


4.38 


1.95 3.23 


2.40 


1.22 


1' . 00 


36.24 


1944 


. .41 


1.99 


4.88 


8.09 2.62 


1.48 


1.17 


4.08 2.89 


2.10 


3.23 


1.82 


34.76 


1945 


.1.55 


1.41 


6.82 


5.98 3.09 


9.24 


1.27 


2.61 9.35 


1.74 


.91 


2.06 


46.03 


1946 


. 2.30 


1.80 


2.42 


1.95 7.39 


4.11 


1.40 


7.99 2.06 


4.74 


7.74 


1.58 


45.48 


Aver 


. 1.98 


1.83' 


2.77 


3.66 4.54 


4.41 


3.02 


3.10 4.42 


2.73 


2.45 


1.71 


36 62 


HAVANA, Mason county 


1871... 


. 4.28 


1.60 


4.25 


2.05 1.00 


3.05 


5.25 


2.15 . 


3.05 


1.95 


2.45 




1872 


. .50 


1.60 


2.48 


2.03 2.13 


9.83 


4.78 


1.13 4.35 


.84 


2.02 


1.61 


33.30 


1873 


. 5.00 


1.83 


.99 


6.20 5.58 


1.24 


5.50 


.89 5.69 


3.17 


1.68 


7.72 


45.49 


1874 


. 2.61 


1.87 


1.22 


2.96 2.42 


2.71 


2.33 


6.48 2.42 


1.27 


3.20 


.93 


30.42 


1875 


. .37 


2.54 


4.14 


2.44 4.74 


4.83 


8.57 


1.30 5.84 


2.80 


.81 


2.08 


40.46 


1876... 


.82 


1.41 


7.03 


2.69 4.35 


5.60 


9.61 


3.06 7.00 


1.55 


2.20 


.20 


45.52 


1877 


. .81 


.10 


5.29 


3.01 2.65 


9.13 


2.17 


2.92 2.20 


6.90 


4.70 


4.45 


44.33 


1878 


. 1.28 


3.56 


2.95 


















1892... 


. 1.65 


1.98 


1.34 


4.84 7 69 


3 02 


2 29 


3 01 


98 


3 25 


1 42 




1893 


. .79 


3.49 


2.94 


7.95 5.48 


2.00 


4.25 


.73 2.34 


.22 


.76 


2.06 


33.01 


1894 


. 2.08 


2.32 


2.13 


1.68 2.23 


3.26 


1.04 


1.84 3.67 


1.11 


1.98 


1.97 


25.31 


1895 


. 1.36 


.32 


1.04 


2.68 1.51 


1.91 


4.89 


4.53 4.34 


.41 


3.80 


6.03 


32.82 


1896... 


. 1.21 


2.13 


.98 


3.15 4.31 


3.25 


4.87 


3.36 5.30 


.58 


1.84 


.33 


31.31 


1897 


. 6.66 


1.32 


4.53 


3.74 1.08 


3.58 


5.22 


1.22 .51 


.08 


3.41 


1.82 


33.17 


1898 


. 4.64 


2.08 


4.84 


2.90 7.63 


4.58 


2.49 


2.78 6.92 


2.55 


2.24 


1.45 


45.10 


1899 


. .77 


2.21 


3.39 


1.26 7.31 


2.24 


7.11 


3.26 4.18 


3.34 


2.41 


2.73 


40.21 


1900 


. 1.88 


5.54 


.72 


1.01 1.33 


3.48 


4.13 


9.02 2.65 


2.00 


1.57 


.40 


33.73 


1901... 


. 2.54 


1.09 


7.30 


.89 .66 


5.02 


1.85 


1.04 1.61 


.66 


.50 


.73 


23.89 


1902 


. .85 


1.42 


4.31 


2.70 2.57 
















1903 










2.55 


3.02 


5.48 5.66 


2.18 


.89 


1.35 




1904 


. 3.11 


1.46 


4.32 


4.03 4.19 


3.40 


4.50 


2.50 3.02 


.31 


.17 


1.26 


32.27 


1905 


1.60 


2.20 


1.69 


3.91 2.69 


2.71 


2.58 


4.42 4.69 


2.91 


2.54 


1.72 


33.66 



1949] CLIMATE OF ILLINOIS: APPENDIX B 245 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


HAVANA, Mason county 


, concluded 










1906... 


. 1.69 


1.37 


2.94 


3.26 


1.84 


2.73 1.78 


3.51 5.24 


.85 


2.37 


1.53 


29.11 


1907 


. 6.79 


.22 


2.54 


3.11 


2.54 


3.89 6.23 


6.73 1.53 


.59 


1.59 


2.41 


38.17 


1908 


. .55 


4.35 


1.06 


4.33 


8.73 


4.45 2.94 


1.67 .74 


.53 


2.01 


1.17 


32.53 


1909 


.1.55 


3.85 


1.80 


5.39 


4.64 


5.68 4.84 


1.95 5.68 


3.13 


3.61 


2.13 


44.25 


1910 


.1.88 


1.15 


.26 


3.82 


7.34 


2.24 3.35 


.58 6.60 


1.51 


1.19 


.98 


30.90 


1911... 


. 2.06 


2.31 


2.11 


3.47 


1.51 


2.99 1.91 


1.86 13.14 


2.07 


2.01 


2.06 


37.50 


1912 


. .58 


1.33 


2.70 


5.09 


3.16 


2.10 1.80 


1.87 5.78 


5.57 


1.50 


.81 


32.29 


1913 


. 1.21 


1.74 


1.53 


3.24 


1.90 


3.15 1.46 


1 . 52 1 . 59 


2.27 


2.99 


.70 


23.30 


1914 


. .81 


1.33 


.65 


1.85 


1.48 


2.24 3.25 


3.27 4.10 


1.91 


.04 


2.02 


22.95 


1915 


. 2.23 


1.79 


.73 


1.68 


6.34 


3.64 8.43 


3.38 6.06 


.53 


3.47 


1.52 


39.80 


1916... 


. 9.74 


.75 


2.61 


1.57 


7.65 


2.02 .25 


6.50 1.63 


1.82 


1.44 


1.60 


37.58 


1917 


. .50 


.22 


3.03 


3.60 


4.84 


8.67 3.46 


1.72 3.55 


1.02 


.09 


.56 


31.26 


1918 


.1.89 


.96 


.39 


4.95 


3.46 


5.21 1.93 


3.45 2.45 


3.87 


3.37 


2.35 


34.28 


1919 


. .02 


1.51 


3.12 


1.43 


5.36 


3.14 1.00 


2.40 2.92 


3.98 


2.53 


.26 


27.67 


1920 


. .78 


.31 


4.43 


5.28 


3.96 


1.34 2.86 


1.09 2.59 


2.16 


1.12 


1.44 


27.36 


1921... 


.1.55 


.15 


4.17 


5.83 


1.67 


3.49 4.73 


3.52 4.60 


2.68 


2.01 


2.41 


36.81 


1922 


.1.89 


1.46 


5.89 


4.07 


3.00 


.85 3.91 


2.20 1.65 


.77 


4.48 


.98 


31.15 


1923 


. 1.00 


.61 


3.90 


1.28 


3.98 


5.62 1.12 


3.75 3.50 


3.86 


1.43 


2.68 


32.73 


1924 


.1.53 


1.49 


2.60 


1.15 


1.77 


6.83 6.78 


3.10 3.37 


1.52 


.54 


3.65 


34.33 


1925 


. .32 


1.10 


2.42 


3.05 


1.38 


4.98 4.34 


3.60 4.19 


4.26 


2.32 


1.07 


33.03 


1926... 


.1.55 


1.59 


2.05 


2.91 


1.75 


5.81 4.59 


4.15 8.65 


3.13 


4.05 


1.24 


41.47 


1927 


. 1.26 


2.29 


5.01 


6.64 


5.57 


3.69 4.41 


4.08 5.12 


3.99 


2.99 


2.64 


47.69 


1928 


. .32 


1.58 


1.46 


3.50 


2.43 


6.33 4.50 


1.35 3.58 


2.85 


3.71 


1.97 


33.58 


1929 


. 3.86 


.62 


3.59 


4.61 


4.21 


5.25 7.11 


1.46 1.97 


3.22 


1.47 


.99 


38.36 


1930 


. 2.93 


1.39 


1.44 


3.19 


1.89 


2.73 .62 


2.29 1.64 


2.35 


2.75 


.47 


23.69 


1931... 


.37 


1.24 


3.20 


2.11 


5.54 


3.47 4.51 


2.97 4.95 


3.13 


4.98 


3.07 


39.54 


1932 


. 2.21 


1.10 


1.97 


1.57 


1.96 


6.26 4.19 


5.34 2.40 


3.26 


.85 


3.08 


34.19 


1933 


. 2.24 


.64 


4.19 


3.62 


5.58 


.40 1.57 


2.99 2.80 


2.87 


.27 


.99 


28.16 


1934 


. .99 


.73 


2.15 


.90 


.39 


2.58 3.31 


3.83 7.38 


2.02 


4.13 


1.37 


29.78 


1935 


. 1.97 


2.32 


2.40 


2.85 


9.82 


3.95 3.36 


.52 2.96 


1.95 


4.77 


1.02 


37.89 


1936... 


. 1.49 


2.27 


.47 


.97 


3.02 


.85 .98 


2.06 7.77 


3.18 


1.71 


2.49 


27.26 


1937 


. 3.21 


.90 


.82 


4.39 


3.08 


3.44 10.95 


1.18 4.19 


2.11 


1.39 


1.86 


37.52 


1938 


. 3.10 


2.02 


4.32 


3.76 


4.75 


4 . 84 3.13 


3.63 .84 


.72 


1.86 


1.68 


34.65 


1939 


. 3.03 


2.95 


4.26 


4.81 


2.76 


5.49 5.49 


5.85 .31 


1.27 


1.06 


.92 


38.20 


1940 


. .92 


.81 


2.30 


3.19 


4.25 


3.41 .87 


5.58 .07 


2.46 


2.16 


1.60 


27.62 


1941... 


. 3.13 


.63 


1.48 


5.24 


3.35 


4.43 2.42 


3.83 6.75 


12.22 


1.95 


1.44 


46.87 


1942 


. 1.06 


4.27 


2.21 


4.16 


4.89 


3.97 7.35 


.82 4.29 


1.62 


6.78 


2.96 


44.38 


1943 


.1.30 


.58 


1.59 


3.59 


9.51 


3.16 3.40 


2.49 1.43 


1.47 


1.21 


.96 


30.69 


1944 


. .45 


1.99 


5.02 


6.71 


5.04 


2.06 1.64 


3.69 4.39 


1.43 


1.85 


1.39 


35.66 


1945 


. .64 


1.26 


4.92 


4.43 


6.25 


7.38 .96 


1.55 9.10 


1.04 


1.57 


2.39 


41.49 


1946 


. 2.34 


.63 


3.50 


1.85 


6.24 


6.81 .82 


4.63 1.68 


4.88 


5.59 


1.86 


40.83 


Aver 


. 1.96 


1.64 


2.83 


3.35 


3.94 


3.92 3.75 


3.00 3.98 


2.34 


2.28 


1.71 


34.70 


HILLSBORO 


, Montgomery county 


1896... 


.73 


2.43 


1.23 


1.98 


6.62 


3.14 4.15 


2.08 4.80 


1.74 


2.58 


.77 


32.25 


1897 


. 4.02 


2.02 


6.04 


4.07 


1.59 


3.93 5.16 


1.16 T 


.25 


5.80 


2.82 


36.86 


1898 


. 5.51 


3.07 


7.78 


3.80 


7.45 


3.39 5.33 


2.69 5.56 


5.13 


2.32 


2.00 


54.03 


1899 


. 1.83 


2.51 


3.54 


1.29 


7.28 


2.84 2.18 


7.49 1.59 


3.67 


2.45 


3.48 


40.15 


1900 


. .52 


4.60 


1.70 


1.31 


5.14 


6.10 2.96 


.42 3.27 


3.02 


2.78 


.95 


32.77 


1901 


. 1.92 


1.98 


3.05 


2.15 


1.46 


2.54 1.93 


4.26 1.03 


2.31 


1.72 


3.66 


28.01 


1902 


. .82 


.89 


4.95 


2.79 


3.31 


8.93 1.39 


5.71 5.32 


2.52 


3.34 


4.00 


43.97 


1903 


.1.19 


3.16 


2.22 


3.57 


2.83 


4.26 2.56 


5.63 1.87 


1.78 


.61 


3.05 


32.73 


1904 


. 3.15 


.90 


6.53 


5.05 


4.14 


4.54 5.38 


4.41 5.44 


.62 


.09 


1.01 


41.26 


1905 


. 2.98 


.86 


1.63 


3.21 


4.67 


1.96 5.32 


2.53 3.16 


9.72 


1.65 


2.15 


39.84 


1906... 


. 3.56 


2.42 


4.47 


2.08 


3.15 


4.85 .50 


2.37 5.83 


1.65 


4.25 


2.02 


37 . 15 


1907 


. 4.89 


.55 


1.90 


2.78 


7.00 


4.88 7.53 


5.81 .96 


3.90 


1.77 


3.36 


45.33 


1908 


. 2.09 


4.76 


2.10 


5.03 


8.28 


4.53 2.52 


.78 1.54 


.10 


1.85 


1.62 


35.20 


1909 


. 2.30 


4.85 


2.78 


7.81 


4.33 


3.79 6.25 


1.04 6.45 


3.79 


6.23 


2.16 


51.78 


1910 


. 2.26 


2.76 


T 


5.19 


6.03 


3.57 4.20 


5.19 6.14 


5.00 


1.05 


1.45 


42.84 


1911... 


.1.93 


2.78 


1.92 


4.95 


1.50 


1.28 2.78 


4.14 7.46 


4.08 


2.71 


1.94 


37.47 


1912 


. 1.01 


2.19 


5.24 


7.64 


3.24 


3.03 3.67 


2.00 1.51 


1.75 


1.85 


.50 


33.63 


1913 


. 6.84 


1.40 


7.97 


2.80 


1.27 


3.18 1.96 


1.87 7.22 


3.33 


4.59 


.72 


43.15 


1914 


.1.64 


3.59 


.50 


2.97 


.13 


1.07 2.93 


4.46 2.31 


3.25 


1.11 


1.63 


25.59 


1915 


. 2.56 


2.03 


.38 


4.48 


9.66 


6.89 5.38 


13.12 1.55 


.43 


1.33 


3.16 


50.97 



246 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


HILLSBORO 


, Montgomery county, 


concluded 


1916 


. 7.98 


.93 


1.07 


1.36 


2.60 5.29 .73 


6.58 


2.47 


2.22 


1.93 


1.93 


35.09 


1917 


.1.58 


.62 


2.45 


5.95 


6.44 2.58 1.32 


2.97 


2.08 


2.69 


.58 


.59 


29.85 


1918 


.1.55 


1.54 


.45 


5.24 


3.60 1.42 2.08 


4.44 


6.86 


2.92 


2.74 


2.67 


35.51 


1919 


. .08 


1.76 


2.11 


1.40 


9.07 6.45 .34 


2.54 


4.45 


7.69 


3.16 


.68 


39.73 


1920 


. 1.01 


1.56 


5.35 


2.18 


6.66 2.27 2.47 


4.34 


3.63 


1.21 


.34 


2.97 


33.99 


1921 


.86 


.71 


6.56 


5.81 


1.88 3.70 1.80 


4.46 


4.23 


1.76 


4.30 


3.21 


39.28 


1922 


.1.18 


.97 


8.21 


6.37 


2.36 1.78 3.35 


1.42 


1.72 


2.66 


2.41 


3.55 


35.98 


1923 


. 1.54 


1.08 


5.63 


2.66 


4.00 5.75 3.04 


3.09 


7.32 


4.32 


2.02 


4.12 


44.57 


1924 


.2.37 


1.13 


2.41 


.65 


4.54 6.20 2.64 


2.76 


3.46 


1.38 


2.57 


5.74 


35.85 


1925 


. .41 


1.48 


3.47 


2.92 


1.36 5.55 3.46 


1.85 


2.02 


5.33 


3.20 


1.41 


32.46 


1926 


. 1.31 


2.76 


2.53 


3.09 


2.23 4.37 .83 


3.88 


9.07 


4.37 


3.49 


1.44 


39.37 


1927 


.2.66 


.73 


5.67 


9.02 


6.25 3.31 4.11 


3.85 


2.97 


3.51 


5.81 


2.55 


50.44 


1928 


. 1.56 


2.94 


1.93 


3.89 


1.19 7.86 5.08 


3.16 


3.00 


3.41 


1.83 


2.57 


38.42 


1929 


.3.20 


.84 


3.95 


5.75 


11.15 3.70 3.52 


2.26 


2.15 


6.05 


.92 


3.53 


47.02 


1930 


. 6.20 


1.47 


1.31 


3.05 


1.44 2.91 .52 


1.12 


3.47 


1.80 


1.83 


.78 


25.90 


1931... 


.29 


1.56 


2.13 


2.83 


4.14 1.49 1.94 


4.49 


3.33 


4.34 


3.98 


2.37 


32.89 


1932 


. 2.92 


1.75 


1.72 


2.57 


.76 4.68 2.71 


7.49 


1.67 


4.44 


1.99 


2.82 


35.52 


1933 


.3.52 


2.19 


3.96 


3.44 


8.87 .18 1.01 


2.81 


3.60 


3.90 


1.17 


1.27 


35.92 


1934 


. 1.43 


1.16 


2.83 


1.70 


1.36 4.98 4.22 


3.72 


5.05 


1.72 


4.56 


1.56 


34.29 


1935 


. 2.40 


1.38 


5.92 


3.02 


9.78 3.79 6.64 


1.15 


4.86 


2.70 


3.66 


.89 


46.19 


1936 


. 1.42 


2.00 


2.20 


3.04 


1.73 3.12 1.08 


1.34 


5.84 


3.57 


2.70 


2.25 


30.29 


1937 


. 6.50 


1.61 


.99 


6.36 


3.05 5.26 3.06 


1.09 


2.62 


4.56 


1.94 


2.41 


39.45 


1938 


. 1.05 


2.64 


9.26 


3.34 


5.09 5.76 2.66 


4.83 


.94 


.83 


1.79 


2.01 


40.20 


1939 


. 4.28 


4.07 


3.08 


4.38 


1.30 5.46 3.08 


9.45 


.43 


.87 


1.94 


1.29 


39.63 


1940 


. 1.05 


1.10 


2.12 


2.81 


3.98 2.53 2.02 


6.17 


.11 


1.87 


3.05 


2.75 


29.56 


1941... 


. 2.23 


.51 


.54 


4.89 


1.36 4.65 1.86 


1.81 


5.33 


6.56 


3.40 


1.00 


34.14 


1942 


. 1.55 


3.28 


2.24 


2.33 


3.93 7.49 5.07 


2.18 


2.20 


2.39 


6.19 


3.36 


42.21 


1943 


. .54 


1.32 


3.40 


2.21 


12.50 6.16 2.20 


.40 


2.04 


2.14 


1.45 


1.6S 


36.04 


1944 


. .09 


2.25 


3.05 


9.83 


4.29 .62 2.02 


4.49 


4.80 


.69 


2.29 


1.61 


36.03 


1945 


. .99 


2.60 


8.54 


5.01 


3.95 11.16 1.68 


3.51 


8.24 


2.24 


2.41 


1.89 


52.22 


1946 


.1.85 


2.50 


3.37 


2.69 


6.76 4.94 2.51 


6.54 


2.19 


3.11 


7.13 


2.75 


46.34 


Aver 


. 2.30 


2.00 


3.42 


3.82 


4.44 4.20 3.00 


3.67 


3.63 


3.04 


2.68 


2.20 


38 40 


HOOPESTON, Vermilion county 


1902... 












2.30 


3.01 




2.88 


2.60 




1903 


. 1.94 


3.03 


.64 


6.45 


3.77 1.84 3.85 


5.78 


1.64 


1.92 


1.80 


2.45 


35.11 


1904 


. 5.20 


2.16 


7.36 


2.61 


2.35 1.87 4.36 


2.81 


3.91 


.38 


.08 


1.35 


34.44 


1905 


. 1.76 


2.77 


1.24 


3.91 


4.53 2.15 3.81 


3.75 


5.09 


2.82 


2.83 


1.47 


36.13 


1906 


. 2.52 


1.52 


4.46 


1.84 


3.58 1.57 2.34 


7.87 


2.31 


1.50 


5.55 


3.57 


38.63 


1907 


. 5.89 


.22 


4.26 


2.90 


3.28 5.34 6.48 


2.08 


5.09 


.94 


2.27 


3.88 


42.63 


1908 


. 1.41 


6.23 


3.64 


4.45 


8.07 .86 2.19 


1.11 


1.79 


.33 


2.81 


1.61 


34.50 


1909 


. 2.87 


6.88 


1.76 


6.45 


4.24 4.18 6.07 


5.28 


2.33 


2.10 


3.47 


3.61 


49.24 


1910 


. 2.99 


1.86 


.46 


2.46 


5.38 1.73 4.66 


2.23 


5.12 




.85 


2.07 




1911... 


. 3.04 


1.97 


2.29 


4.45 


2.26 2.13 3.42 


2.92 


7.28 


4.19 


3.54 


1.71 


39.20 


1912 


. 1.71 


2.11 


3.25 


5.77 


3.88 3.56 6.62 


5.50 


2.13 


1.80 


2.97 


.70 


40.00 


1913 


. 6.21 


1.46 


6.96 


2.51 


1.99 3.28 2.58 


5.14 


2.44 


3.71 


3.31 


1.24 


40.83 


1914 


. 2.18 


2.61 


2.02 


2.69 


4.29 1.80 1.52 


2.27 


1.63 


3.24 


.62 


2.56 


27.43 


1915 


. 2.37 


2.64 


1.26 


2.29 


4.30 2.33 7.88 


3.50 


6.90 


1.01 


1.50 


1.96 


37.94 


1916 


. 6.55 


.50 


1.86 


1.51 


5.97 5.29 2.43 


2.50 


1.83 


3.33 


2.08 


2.88 


36.73 


1917 


. .97 


.56 


3.68 


4.27 


4.74 6.66 2.55 


2.80 


1.22 


3.71 


.34 


.80 


32.30 


1918 


. 2.65 


2.10 


1.21 


5.60 


4.02 7.11 2.34 


3.87 


4.19 


4.14 


1.91 


4.59 


43.73 


1919 


. .59 


2.14 


3.83 


1.97 


3.10 3.74 1.12 


2.56 


2.89 


4.98 








1920 


. 1.27 


.38 


4.11 


6.23 


3.19 1.00 2.51 






1.82 








1921 


. 2.17 


.78 


5.31 


3.91 


1.00 2.58 2.47 


5.07 


5.08 


2.84 


5.37 


1.80 


38.38 


1922 




1.85 


6.23 


5.68 


3.10 .88 3.95 


1.19 






2.74 


1.74 




1923 


. 1.65 


1.17 


4.34 


2.21 


7.30 2.54 3.53 


3.76 


3.84 


4.75 


1.81 


5.45 


42.35 


1924 


. 2.12 


2.10 


3.51 


2.85 


3.83 8.81 .97 


6.85 


3.33 


.73 


.72 


6.25 


42.07 


1925 


. .55 


.90 


4.42 


1.78 


.22 2.78 2.43 


3.46 


4.65 


2.41 


2.78 


1.51 


27.89 


1926... 


. 2.64 


2.66 


2.83 


3.88 


3.77 1.86 3.31 


8.81 


12.08 


6.02 


2.18 


1.14 


51.18 


1927 


. 1.63 


1.95 


4.20 


7.55 


7.51 4.31 2.02 


2.30 


6.23 


2.93 


7.38 


4.09 


52.10 


1928 


. 1.78 


1.97 


.96 


1.92 


2.14 6.33 3.96 


1.98 


2.62 


2.67 


2.08 


1.84 


30.25 


1929 


. 3.07 


.49 


2.49 


5.64 


6.59 4.69 4.06 


2.09 


1.34 


4.12 


1.96 


2.97 


39.51 


1930 


. 5.43 


1.59 


1.60 


4.57 


2.12 2.13 1.99 


2.41 


2.66 


1.64 


2.81 


.21 


29.16 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



247 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


HOOPESTON, Vermilion county, 


concluded 


1931... 


.37 


.91 


1.68 


3.38 4.49 


4.99 9.39 


4.16 


5.40 


3.07 


3.39 


1.89 


43.12 


1932 


. 2.34 


2.10 


1.88 


1.45 1.21 


2.87 3.26 


5.67 


3.25 


3.81 


3.04 


3.84 


34.72 


1933 


. 1.99 


1.22 


3.93 


4.38 7.51 


.74 .83 


1.62 


6.20 


3.70 


.86 


1.53 


34.51 


1934 


. 1.61 


.60 


3.30 


1.60 .71 


3.06 1.98 


5.58 


7.23 


.94 


5.93 


1.89 


34.43 


1935 


. 2.36 


1.37 


4.65 


2.00 6.37 


5.26 6.41 


1.09 


4.07 


1.84 


5.05 


1.37 


41.84 


1936 


. 1.25 


2.16 


1.32 


3.20 2.90 


.19 1.66 


3.58 


4.73 


4.73 


2.97 


3.25 


31.94 


1937 


. 5.22 


1.50 


.99 


6.38 2.54 


5.64 1.87 


2.27 


3.93 


3.15 


1.48 


2.03 


37.00 


1938 


.1.16 


4.57 


5.78 


2.82 4.94 


5.49 5.27 


2.85 


3.94 


1.74 


1.96 


1.68 


42.20 


1939 


. 2.87 


3.16 


4.34 


6.52 2.63 


7.09 7.08 


2.69 


.64 


4.82 


1.49 


1.04 


44.37 


1940 


. 1.30 


1.31 


2.62 


4.14 6.12 


4.87 .94 


1.79 


.61 


1.85 


4.45 


2.11 


32.11 


1941... 


. 1.39 


.77 


1.35 


3.26 3.18 


3.25 5.25 


3.27 


1.45 


9.21 


2.81 


1.46 


36.65 


1942 


. 2.03 


3.84 


5.12 


2.73 4.35 


4.66 3.84 


3.59 


3.37 


2.41 


6.44 


2.01 


44.39 


1943 


.1.24 


1.07 


3.75 


2.98 10.09 


3.68 4.71 


3.59 


1.88 


1.92 


3.03 


.59 


38.53 


1944 


. .27 


3.02 


2.77 


6.16 4.07 


5.17 1.03 


3.53 


1.39 


1.00 


1.65 


1.34 


31.40 


1945 


. .51 


1.36 


5.90 


3.51 5.23 


3.30 1.25 


2.97 


6.58 


2.76 


2.39 


2.44 


38.20 


1946 


. 1.23 


2.35 


3.84 


1.29 5.01 


9.53 2.20 


1.40 


1.30 


5.35 


3.52 


1.70 


38.72 


Aver 


. 2.33 


2.00 


3.26 


3.73 4.13 


3.71 3.46 


3.45 


3.69 


2.91 


2.77 


2.24 


37.68 


JACKSONVILLE, Morgan county a 


1896 


.1.19 


1.69 


.82 


2.49 4.27 


4.63 7.50 


.89 


5.49 


1.98 


1.09 


.22 


32.26 


1897 


. 6.05 


.83 


4.42 


4.35 3.39 


4.52 2.41 


2.20 


.24 


.33 


3.50 


2.42 


34.66 


1898 


. 4.21 


2.81 


5.25 


3.15 5.83 


5.14 2.28 


3.17 


5.19 


3.80 


2.56 


1.19 


44.58 


1899 


. .96 


2.19 


2.05 


1.18 9.15 


1.91 1.84 


3.92 


4.29 


3.07 


2.31 


1.48 


34.35 


1900 


. 1.10 


3.46 


1.47 


1.13 2.75 


3.09 2.74 


3.69 


5.29 


2.86 


3.05 


.24 


30.87 


1901... 


. 2.33 


1.44 


2.75 


1.34 .70 


2.23 1.44 


2.84 


1.54 


2.00 


.88 


2.15 


21.64 


1902 


. .70 


.97 


3.05 


3.26 2.19 


7.01 3.27 


5.38 


4.01 


2.29 


3.08 


2.45 


37.66 


1903 


. 1.07 


2.93 


2.67 


3.67 3.42 


5.20 3.54 


2.90 


3.57 


2.12 


.78 


1.09 


32.96 


1904 


. 1.74 


1.40 


4.51 


5.26 3.56 


4.90 3.74 


3.84 


3.86 


.27 


.05 


.68 


33.81 


1905 


. 2.67 


.88 


1.75 


1.82 3.51 


3.61 4.33 


4.58 


3.98 


3.67 


1.43 


1.42 


33.65 


1906... 


.1.72 


2.47 


2.98 


2.22 4.20 


2.98 .89 


5.03 


3.23 


.95 


3.02 


2.84 


32.52 


1907....'.. 


. 5.26 


.26 


4.23 


2.53 2.38 


2.94 8.57 


7.78 


1.09 


1.55 


1.25 


2.58 


40.43 


1908 


. 1.27 


3.07 


2.08 


4.97 7.78 


3.14 2.31 


1.21 


1.40 


.22 


1.81 


1.29 


30.55 


1909 


.2.10 


3.81 


1.03 


4.19 6.14 


2.24 6.11 


.66 


3.89 


3.57 


4.54 


1.50 


39.78 


1910 


. 1.49 


.84 


.04 


2.69 5.25 


3.13 2.56 


3.62 


5.78 


1.72 


1.14 


.80 


29.06 


1911 


.1.74 


1.26 


1.55 


4.21 2.25 


.47 1.91 


3.58 


12.22 


2.03 


2.47 


1.84 


35.53 


1912 


. .68 


1.49 


4.02 


4.77 5.27 


4.64 2.00 


8.38 


1.62 


3.53 


1.56 


.53 


38.49 


1913 


. 3.18 


1.56 


5.46 


2.97 .66 


3.49 1.08 


1.79 


3.04 


3.07 


3.60 


.67 


30.57 


1914 


. 1.84 


1.59 


1.70 


2.47 1.27 


1.74 1.14 


3.58 


3.91 


3.63 


.62 


2.22 


25.71 


1915 


. 2.13 


2.16 


.80 


2.09 7.72 


6.26 7.57 


5.09 


5.12 


.97 


2.22 


2.80 


44.93 


1916 


. 4.67 


1.00 


1.92 


1.18 5.21 


3.95 1.41 


4.69 


2.74 


1.51 


2.14 


1.01 


31.43 


1917 


. 1.28 


.24 


5.54 


4.87 3.95 


8.02 2.70 


3.25 


3.08 


.83 


.28 


.51 


34.55 


1918 


. 1.06 


2.13 


.66 


5.68 6.81 


3.08 2.21 


2.77 


5.10 


4.18 


2.46 


2.41 


38.55 


1919 


. .10 


1.80 


2.17 


1.71 4.92 


5.43 2.25 


3.75 


5.23 


6.38 


2.42 


.35 


36.51 


1920 


. .74 


.31 


5.62 


3.81 7.41 


1.81 2.82 


4.14 


3.05 


3.36 


.99 


2.64 


36.70 


1921... 


. 1.72 


.54 


4.93 


5.42 .78 


3.97 3.25 


4.02 


6.85 


2.76 


2.72 


3.03 


39.99 


1922 


.1.60 


.84 


6.28 


6.44 4.06 


1.21 2.90 


.43 


1.24 


1.77 


2.83 


1.18 


30.78 


1923 


. .97 


.95 


4.19 


1.88 4.35 


3.77 1.03 


5.75 


6.75 


5.05 


1.80 


3.46 


39.95 


1924 


. 1.27 


1.04 


2.17 


2.42 3.26 


6.18 3.07 


3.10 


2.90 


2.12 


1.42 


5.37 


34.22 


1925 


. .35 


1.49 


2.78 


3.13 1.59 


4.18 4.93 


4.93 


4.43 


2.97 


2.60 


1.24 


34.62 


1926... 


.1.65 


2.79 


3.53 


4.75 2.05 


6.11 1.99 


5.53 


15.94 


5.93 


4.19 


.91 


55.37 


1927 


. 2.06 


1.12 


5.98 


6.71 5.52 


3.72 3.39 


4.06 


5.01 


3.48 


5.53 


2.03 


48.61 


1928 


. .77 


1.86 


.65 


3.95 4.87 


7.31 6.31 


2.41 


6.05 


4.27 


2.35 


1.71 


42.51 


1929 


. 4.05 


.52 


2.90 


4.18 6.60 


3.19 4.18 


1.95 


2.61 


4.30 


1.37 


1.28 


37.13 


1930 


. 4.34 


1.64 


1.57 


1.49 1.86 


4.28 .60 


2.22 


2.69 


1.84 


2.38 


.37 


25.28 


1931... 


.15 


1.95 


2.55 


2.19 5.17 


1.26 4.20 


3.66 


3.75 


3.49 


4.20 


2.74 


35.31 


1932 


.1.87 


1.15 


1.63 


1.46 2.22 


3.56 3.39 


7.11 


.92 


3.14 


1.29 


3.36 


31.10 


1933 


. 3.19 


.83 


3.48 


3.08 7.62 


2.05 .38 


4.26 


3.51 


3.51 


.23 


.96 


33.10 


1934 


.1.19 


.76 


2.54 


1.18 .28 


4.09 2.30 


3.45 


7.54 


2.52 


4.03 


1.39 


31.27 


1935 


. 2.11 


1.47 


3.29 


2.62 12.26 


4.97 .81 


.39 


2.84 


2.45 


5.96 


.70 


39.87 


1936... 


. . 1.17 


1.31 


1.21 


1.86 1.20 


2.06 .64 


.73 


9.31 


3.08 


2.34 


2.29 


27.20 


1937 


. . 4.03 


1.42 


.67 


4.81 2.90 


7.22 3.67 


2.60 


2.20 


2.50 


1.87 


1.85 


35.74 


1938 


. . 2.45 


1.69 


4.34 


3.99 5.33 


5.68 2.11 


2.27 


1.04 


1.60 


1.78 


2.04 


34.32 


1939 


. 2.24 


2.31 


3.21 


6.07 2.03 


4.27 4.38 


4.15 


.30 


2.80 


1.26 


1.06 


34.08 


1940 


. 1.07 


.56 


2.17 


2.87 2.87 


4.86 .95 


4.75 


.10 


1.71 


2.49 


1.38 


25.78 



Data from 1896 thru April 26, 1927, are for Alexander, 10 miles east of Jacksonville. 



248 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


JACKSONVILLE, 


Morgan county, 


concluded 


1941 


. 2.95 


.54 


1.59 


5.07 2.60 


3.90 3.99 


1.51 


5.98 


12.20 


2.56 


1.09 


43.98 


1942 


. 1.08 


4.09 


2.20 


2.61 5.68 


4.39 7.82 


1.12 


4.13 


2.20 


6.21 


3.77 


45.30 


1943 


. 1.09 


1.01 


1.70 


2.88 11.38 


2.83 4.22 


.42 


3.09 


2.11 


1.52 


1.93 


34.18 


1944 


. .39 


2.75 


4.18 


6.28 4.70 


1.60 .76 


5.25 


3.75 


2.05 


1.45 


2.14 


35.30 


1945 


. 1.25 


1.24 


5.35 


5.39 3.87 


6.32 2.17 


1.88 


8.40 


.93 


1.50 


2.23 


40.53 


1946 


.1.39 


1.83 


1.89 


l.<69 5.62 


4.68 3.46 


5.09 


2.02 


4.32 


6.47 


1.79 


40.25 


Aver 


. 1.92 


1.57 


2.85 


3.38 4.33 


3.98 3.05 


3.45 


4.14 


2.84 


2.38 


1.74 


35 63 


KEOKUK, Lee county, Iowa 


1871 










.04 


1.86 


.84 


5.22 


2.89 


1.46 




1872 


.07 


.39 


2.88 


3.86 3.70 


5.81 6.77 


1.97 


2.26 


.42 


.74 


.50 


29.37 


1873 


. 3.40 


.53 


.51 


5.65 3.42 


1.21 8.94 


.54 


3.37 


4.69 


1.43 


8.56 


42.25 


1874 


. 3.92 


.88 


1.14 


2.40 1.65 


4.01 4.61 


3.87 


7.92 


1.94 


2.17 


1.26 


35.77 


1875 


. .61 


1.84 


1.67 


.89 6.70 


8.33 12.70 


3.83 


4.62 


2.71 


.59 


3.93 


48.42 


1876 


. 3.68 


1.45 


3.45 


3.99 5.28 


6.73 6.79 


4.03 


11.08 


2.12 


2.82 


.23 


51.65 


1877 


. .84 


.15 


3.76 


4.22 5.55 


7.82 7.06 


2.52 


3.61 


7.11 


3.05 


2.90 


48.59 


1878 


. .17 


2.95 


3.78 


2.31 3.47 


3.93 2.37 


5.27 


1.36 


2.31 


1.93 


1.95 


31.80 


1879 


. .50 


.53 


1.71 


1.56 2.27 


2.63 1.98 


4.57 


1.12 


.28 


3.91 


1.45 


22.51 


1880 


. 3.91 


1.94 


'1.83 


4.79 5.92 


3.06 2.25 


3.81 


3.21 


2.02 


1.13 


.67 


34.54 


1881 . . . 


.50 


2.58 


2.42 


3.12 1.35 


8.70 3.08 


.86 


4.10 


8.01 


2.59 


1.70 


39.01 


1882 


. 1.07 


1.54 


3.30 


3.22 7.11 


9.45 4.53 


3.09 


1.52 


2.71 


2.25 


1.75 


41.54 


1883 


. 1.24 


6.13 


1.07 


2.97 4.87 


5.88 3.15 


1.32 


1.76 


6.95 


2.09 


1.20 


38.63 


1884 


. .85 


1.88 


3.37 


1.31 3.16 


4.03 2.30 


2.74 


4.25 


3.35 


1.73 


3.91 


32.88 


1885 


. 2.44 


1.14 


.17 


3.33 2.59 


6.97 2.29 


5.98 


3.77 


3.59 


.88 


1.96 


35.11 


1886 


. 2.08 


1.40 


2.25 


1.52 4.49 


2.86 .65 


5.90 


3.95 


2.38 


1.15 


1.03 


29.66 


1887 


. 1.48 


5.19 


.76 


1.84 2.54 


1 . 55 1 . 57 


2.38 


3.13 


1.98 


1.18 


2.73 


26.33 


1888 


. 1.57 


2.17 


3.45 


1.85 5.06 


5.42 6.00 


2.07 


2.13 


1.63 


2.83 


1.61 


35.79 


1889 


. 1.89 


.90 


1.04 


3.60 5.72 


2.97 6.78 


.95 


5.14 


2.88 


1.80 


1.08 


34.75 


1890 


. 1.81 


1.09 


2.43 


1.79 3.34 


3.41 2.49 


1.77 


4.46 


2.44 


1.87 


.03 


26.93 


1891 


. 2.59 


1.32 


2.27 


5.06 2.56 


3.66 2.77 


6.10 


.49 


1.49 


3.60 


1.33 


33.24 


1892 


. 1.96 


1.61 


2.91 


6.15 6.34 


2.65 6.18 


1.07 


3.21 


.71 


3.16 


1.50 


37.45 


1893 


. .92 


1.76 


2.66 


5.41 4.36 


2.37 2.60 


1.16 


3.18 


.33 


2.29 


.90 


27.94 


1894 


. 2.24 


1.46 


2.52 


2.75 3.06 


2.85 .37 


.51 


4.86 


1.28 


2.24 


1.06 


25.20 


1895 


. 1.44 


.19 


1.05 


3.38 3.15 


2.61 5.46 


2.68 


2.67 


.37 


2.58 


4.24 


29.82 


1896... 


.85 


1.23 


.88 


2.35 4.40 


2.18 8.01 


3.90 


9.44 


1.71 


1.01 


.81 


36.77 


1897 


. 4.90 


.96 


4.16 


3.54 1.86 


5.43 6.75 


.65 


.64 


.24 


2.17 


1.84 


33.14 


1898 


. 3.13 


1.16 


5.98 


4.80 6.70 


4.77 3.06 


6.92 


8.07 


3.99 


1.52 


1.38 


51.48 


1899 


. .49 


1.65 


2.66 


3.28 11.47 


2.78 5.39 


4.01 


4.32 


2.06 


1.19 


1.67 


40.97 


1900 


. 2.46 


3.24 


1.43 


2.10 4.56 


1.06 2.20 


4.21 


5.02 


5.36 


1.72 


.25 


33.61 


1901 . . . 


. 1.41 


.75 


2.59 


2.29 1.95 


6.34 2.02 


.15 


2.14 


.93 


.80 


1.17 


22.54 


1902 


. .44 


1.02 


2.24 


3.13 3.63 


7.59 4.87 


6.93 


1.82 


2.38 


2.60 


2.21 


38.86 


1903 


. .77 


1.42 


3.03 


4.91 3.56 


1.40 1.27 


4.80 


7.16 


3.23 


.87 


.86 


33.28 


1904 


. 2.70 


.70 


3.46 


5.11 3.94 


3.62 4.48 


4.63 


8.33 


.30 


.21 


1.45 


38.93 


1905 


. .60 


1.37 


1.78 


3.32 3.01 


6.57 2.89 


3.16 


4.15 


3.41 


2.32 


1.03 


33.61 


1906... 


. 2.40 


2.50 


2.82 


2.16 1.83 


1.48 1.46 


2.87 


2.94 


.73 


1.92 


1.90 


25.01 


1907 


. 5.07 


.10 


5.05 


2.02 3.44 


6.40 6.26 


5.50 


1.94 


.47 


1.17 


1.38 


38.80 


1908 


. .51 


2.86 


1.76 


1.82 10.09 


4.32 3.70 


2.50 


2.22 


.87 


3.05 


.58 


34.28 


1909 


. 1.26 


2.44 


1.84 


4.99 3.03 


5.11 5.46 


.68 


3.46 


4.48 


3.97 


2.56 


39.28 


1910 


. 1.61 


.99 


.53 


2.91 6.87 


1.34 2.74 


.92 


2.08 


.81 


.23 


.79 


21.82 


1911... 


. 2.66 


2.35 


1.79 


4.13 .42 


.65 6.48 


1.74 


7.67 


2.19 


2.88 


1.87 


34.83 


1912 


. .18 


.94 


1.38 


2.41 1.82 


2.23 4.45 


2.50 


1.73 


4.47 


1.81 


.50 


24.42 


1913 


. 1.04 


2.39 


2.82 


2.62 3.87 


4.15 .09 


1.63 


1.42 


1.43 


2.22 


1.35 


25.03 


1914 


. 1.31 


1.12 


1.97 


1.94 1.73 


3.34 2.09 


2.61 


6.22 


1.65 


.41 


1.55 


25.94 


1915 


. .90 


1.43 


.90 


1.27 5.79 


9.99 6.34 


1.43 


6.16 


.38 


2.85 


1.49 


38.93 


1916... 


. 5.18 


.59 


1.37 


2.44 6.63 


3.74 .10 


4.71 


3.41 


2.75 


1.75 


.73 


33.40 


1917 


. .56 


.13 


3.46 


3.36 2.53 


7.35 2.65 


1.37 


5.29 


1.93 


.01 


.36 


29.00 


1918 


. .70 


1.15 


.16 


2.66 6.72 


3.90 1.08 


3.24 


1.77 


2.16 


2.91 


2.10 


28.55 


1919 


. .01 


1.57 


1.49 


1.94 4.24 


2.38 2.47 


3.85 


4.69 


1.68 


2.53 


.18 


27.03 


1920 


. .38 


.19 


4.02 


3.64 3.36 


2.99 3.84 


.88 


2.65 


1.00 


.98 


.61 


24.54 



1949] CLIMATE OF ILLINOIS: APPENDIX B 249 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


KEOKUK, Lee county, Iowa, concluded 


1921 


. 1.92 


.48 


5.13 


3.91 


1.72 


2.53 


.55 5.34 7.48 


2.56 


1.12 


2.25 


34.99 


1922 


. . 1.04 


1.56 


3.58 


2.97 


2.44 


1.08 


6.35 3.37 2.92 


.77 


3.38 


.63 


30.09 


1923 


. . 1.13 


.35 


3.54 


1.16 


2.37 


3.17 


1.61 3.63 4.64 


.82 


1.26 


1.79 


25.47 


1924 


.. 1.31 


.93 


1.96 


2.07 


2.39 


5.94 


4.85 5.60 1.70 


1.66 


.50 


2.19 


31.10 


1925 


. . .35 


1.71 


.95 


3.67 


1.28 


4.79 


3.90 4.68 6.99 


2.56 


1.04 


1.65 


33.57 


1926... 


. 1.03 


1.14 


1.92 


1.85 


3.14 


7.57 


2.77 3.39 12.56 


3.41 


3.11 


1.45 


43.34 


1927 


. . 1.10 


1.38 


3.48 


2.95 


4.55 


6.61 


1.38 3.10 2.91 


4.16 


3.61 


2.07 


37.30 


1928 


. . .41 


1.75 


1.39 


2.79 


2.55 


5.15 


2.93 2.67 4.18 


5.91 


5.18 


1.85 


36.76 


1929 


. . 3.14 


.97 


4.78 


4.60 


2.97 


3.91 


5.75 1.41 4.77 


4.27 


1.51 


.69 


38.77 


1930 


. . 2.51 


1.01 


.67 


1.97 


2.18 


4.06 


.30 2.11 2.97 


2.00 


3.63 


.60 


24.01 


1931... 


.54 


1.08 


2.18 


3.27 


4.27 


6.56 


1.71 2.40 6.73 


4.05 


3.85 


2.01 


38.65 


1932 


. . 1.28 


.98 


1.56 


1.20 


2.50 


5.51 


4.53 8.93 1.43 


2.96 


1.78 


4.00 


36.66 


1933 


. . 1.87 


.65 


2.31 


1.59 


8.43 


6.88 


1.61 1.83 2.25 


1.07 


.33 


1.74 


30.56 


1934 


. . .81 


.91 


1.77 


2.64 


1.34 


3.01 


.95 2.66 6.40 


1.93 


4.86 


.91 


28.19 


1935 


. . 1.81 


1.79 


2.97 


2.48 


7.28 


6.40 


4.85 1.90 4.46 


1.66 


2.94 


1.00 


39.54 


1936... 


. 1.74 


1.89 


1.01 


1.57 


2.76 


1.26 


.01 .78 7.59 


1.80 


.84 


2.81 


24.06 


1937 


... 3.36 


1.51 


.81 


3.90 


2.85 


2.14 


5.34 3.88 1.47 


1.08 


1.92 


1.90 


30.16 


1938 


. 3.73 


1.86 


4.58 


3.17 


4.24 


3.70 


1.63 2.30 3.49 


1.04 


3.57 


1.15 


34.46 


1939 


. .92 


1.48 


3.69 


4.96 


5.80 


4.42 


2.37 4.81 .23 


2.39 


1.70 


.34 


33.07 


1940 


. . .91 


.72 


1.55 


2.61 


1.28 


2.18 


2.70 6.11 .04 


3.14 


1.70 


1.84 


24.78 


1941... 


. 3.23 


.46 


.40 


2.83 


2.28 


3.51 


1.85 1.78 4.73 


11.29 


1.32 


2.12 


35.80 


1942 


. . .52 


3.38 


1.82 


2.40 


3.49 


3.28 


4.75 1.55 5.71 


.69 


4.14 


3.11 


34.84 


1943 


, . 1.04 


.77 


1.46 


3.88 


5.81 


4.46 


6.58 2.24 1.34 


3.16 


1.45 


.94 


33.13 


1944 


. .42 


2.01 


4.47 


6.44 


4.15 


2.45 


2.99 4.78 3.69 


1.10 


2.70 


1.13 


36.33 


1945 


. .88 


.91 


4.44 


4.88 


4.63 


9.26 


.04 1.63 6.99 


.91 


1.77 


2.42 


38.76 


1946 


. . 2.43 


.37 


2.84 


2.21 


3.33 


3.35 


1.92 4.63 2.59 


2.94 


2.17 


2.88 


31.66 


Aver 


. 1.63 


1.43 


2.36 


3.07 


3.94 


4.31 


3.53 3.08 3.99 


2.48 


2.07 


1.65 


33 , 54 


LA HARPE, Hancock county 


1895 , 








1.71 


1.40 


3.13 


4.89 3.24 3.25 


.34 


3.40 


5.65 




1896... 


. 1.26 


2.14 


1.18 


2.35 


4.80 


5.16 


7.80 7.96 12.28 


2.00 


2.53 


.99 


50.45 


1897 


.10.38 


1.83 


6.22 


5.85 


2.41 


5.80 


3.87 1.86 1.39 


.26 


1.26 


2.10 


43.23 


1898 


, . 2.94 


1.40 


5.12 


3.91 


8.56 


2.59 


2.35 10.40 6.42 


3.15 


1.65 


.42 


48.91 


1899 


. .35 


1.38 


3.14 


3.17 


12.57 


2.60 


2.58 4.32 2.82 


1.97 


1.52 


1.17 


37.59 


1900 


. 2.15 


4.26 


1.55 


1.52 


3.50 


.53 


3.06 2.85 2.90 


4.70 


1.38 


.25 


28.65 


1901... 


.1.17 


1.65 


2.24 


1.30 


2.10 


5.10 


5.15 .50 2.07 


.85 


1.08 


.69 


23.90 


1902 


. .65 


1.30 


3.40 


2.95 


3.00 


9.70 


6.75 9.05 2.50 


2.65 


2.90 


2.04 


46.89 


1903 


. 2.07 


2.13 


1.92 


5.30 


3.00 


2.20 


1.45 5.00 7.65 


4.05 


1.02 


.88 


36.67 


1904 


. 5.48 


.90 


5.17 


2.85 


4.60 


4.00 


6.45 4.20 8.15 


.45 


.50 


1.92 


44.67 


1905 


. 1.13 


1.99 


1.25 


4.47 


4.55 


12.60 


2.40 5.55 1.65 


2.80 


2.10 


1.14 


41.63 


1906... 


. 3.35 


2.50 


4.19 


1.70 


3.70 


3.35 


4.25 2.15 4.10 


1.00 


1.15 


2.20 


33.64 


1907 


. 7.62 


.30 


6.40 


2.60 


2.75 


4.45 


6.70 5.10 1.95 


.30 


.90 


1.26 


40.33 


1908 


. 2.45 


3.10 


2.27 


1.64 


11.25 


5.60 


2.40 1.24 2.03 


.70 


2.34 


.60 


35.62 


1909 


. 1.35 


3.32 


2.09 


3.52 


4.87 


7.15 


6.18 3.31 4.68 


3.52 


3.61 


2.92 


46.52 


1910 


. .62 


.60 


.34 


2.37 


6.8'8 


1.99 


3.61 .38 2.74 


.75 


.11 


.82 


21.21 


1911... 


. 4.17 


1.87 


1.90 


2.94 


1.53 


1.68 


7.17 1.44 11.84 


2.06 


1.88 


2.07 


40.55 


1912 


. .52 


.90 


1.14 


2.20 


2.71 


2.17 


4.36 2.55 1.70 


3.97 


2.06 


.57 


24.85 


1913 


. 1.14 


2.26 


2.74 


2.82 


3.53 


3.54 


.23 1.39 1.96 


2.07 


2.43 


.94 


25.05 


1914 


. .91 


.56 


1.92 


2.08 


2.27 


1.59 


.56 4.25 7.25 


1.69 


.29 


1.97 


25.34 


1915 


. 2.18 


2.35 


.47 


.89 


5.34 


5.33 


9.83 1.50 5.18 


.58 


2.72 


1.56 


37.93 


1916... 


. 5.20 


.38 


2.75 


2.59 


7.98 


4.66 


.10 3.06 3.60 


2.58 


1.84 


.84 


35.58 


1917 , 


. .53 


.20 


2.45 


4.19 


3.52 


11.51 


2.76 1.75 5.05 


1.76 


.08 


1.00 


34.80 


1918 




1.87 


.50 


3.54 


8.22 


4.60 


1.49 2.45 2.06 


4.23 


2.42 


2.85 




1919 


. .23 


2.45 


1.94 


1.56 


4.70 


3.81 


.31 4.07 5.52 


1.58 


3.09 


.50 


29.76 


1920 


. .70 


.22 


5.11 


7.58 


4.05 


8.46 


1.12 .75 2.17 


1.65 


1.47 


.83 


34.11 


1921... 


. 1.65 


.66 


6.02 


6.44 


2.58 


4.36 


2.53 4.62 7.26 


2.63 


1.55 


1.98 


42.28 


1922 




2.16 


3.67 


3.64 


4.96 


1.32 


7.02 3.14 3.84 


.98 


4.71 


.79 




1923 


. 1.26 


.60 


4.08 


.86 


3.53 


2.99 


4.97 2.85 4.04 


1.26 


1.46 


2.27 


30.17 


1924 


. 1.80 


2.11 


2.18 


1.23 


1.90 


10.75 


8.51 3.84 1.99 


1.69 


.81 


2.89 


39.70 


1925 , 


. .46 


1.47 


1.09 


4.18 


1.60 


6.78 


2.92 3.50 6.16 


2.73 


1.82 


1.45 


34.16 



250 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


LA HARPE, Hancock county, concluded 


1926 


. 1.20 


1.29 


2.33 


1.98 


2.53 


7.24 2.21 4.64 


10.18 


2.71 


2.76 


1.56 


40.63 


1927 


.1.33 


1.81 


4.24 


5.42 


6.11 


5.96 2.60 1.78 


3.42 


7.33 


3.23 


2.27 


45.50 


1928 


. .49 


1.82 


1.17 


3.43 


3.36 


4.81 3.32 2.64 


5.70 


3.64 


5.67 


1.82 


37.87 


1929 


. 3.65 


1.34 


5.89 


5.57 


2.88 


4.51 6.89 1.31 


4.14 


4.36 


1.82 


1.00 


43.42 


1930 


. 3.19 


1.17 


1.08 


2.07 


2.56 


3.63 .47 1.61 


3.32 


2.33 


2.91 


.56 


24.90 


1931 


.59 


1.17 


3.25 


3.15 


4.21 


3.82 3.79 4.42 


6.30 


2.47 


4.26 


2.74 


40.17 


1932 


. 1.28 


.72 


2.19 


.88 


3.10 


3.89 5.31 6.54 


1.13 


2.94 


1.69 


4.39 


34.06 


1933 


. 2.41 


.57 


2.16 


2.15 


9.12 


3.77 1.40 4.26 


2.31 


1.06 


.61 


1.82 


31.64 


1934 


. .79 


.69 


1.89 


2.92 


1.22 


3.08 2.51 1.67 


7.24 


1.41 


6.69 


1.15 


31.26 


1935 


. 2.04 


2.22 


3.54 


2.53 


8.72 


6.40 7.78 2.67 


5.35 


1.45 


4.42 


1.10 


48.22 


1936 


. 1.60 


1.99 


1.23 


2.06 


2.79 


1.22 .39 1.77 


7.61 


2.13 


.70 


2.65 


26.14 


1937 


. 3.40 


.95 


.82 


3.38 


2.73 


2.19 4.12 3.62 


1.70 


1.70 


1.58 


1.86 


28.05 


1938 


. 3.98 


1.90 


4.17 


4.37 


6.56 


6.87 4.37 2.83 


2.99 


1.24 


3.54 


1.51 


44.33 


1939 


.1.15 


1.52 


4.46 


5.73 


2.47 


4.79 3.21 6.23 


.30 


3.51 


1.64 


.93 


35.94 


1940 


. 1.24 


.97 


2.08 


3.71 


1.92 


2.77 2.43 3.48 


.12 


2.78 


1.69 


1.98 


25.17 


1941 


. 3.31 


.53 


.57 


3.51 


2.82 


7.06 1.79 2.60 


7.65 


13.61 


1.53 


2.23 


47.21 


1942 


. .73 


4.04 


2.44 


3.66 


4.86 


2.76 3.17 2.07 


3.95 


.92 


5.23 


3.70 


37.53 


1943 


.1.18 


.77 


2.02 


3.87 


6.15 


5.38 4.83 3.03 


1.20 


4.36 


2.42 


.85 


36.06 


1944 


. .37 


1.58 


7.21 


7.45 


3.11 


4.08 2.52 7.65 


3.55 


1.96 


3.23 


1.27 


43.98 


1945 


. 1.03 


1.06 


5.63 


4.65 


6.39 


7.07 .21 1.64 


6.92 


.92 


2.34 


2.09 


40.55 


1946 


.1.14 


1.77 


3.67 


1.62 


6.53 


6.11 3.45 2.70 


1.49 


5.50 


3.89 


2.22 


40.09 


Aver 


. 2.04 


1.54 


2.87 


3.23 


4.39 


4.75 3.66 3.41 


4.28 


2.49 


2.27 


1.68 


36.61 


LINCOLN, Logan county a 


1893 












3.41 2.05 .35 


2.25 


1.11 


1.64 


1.30 




1894 


. 2.79 


2.62 


3.23 


2.60 


2.88 


1.91 3.27 1.51 


4.06 


.81 


1.50 


2.43 


29.61 


1895 


. 1.25 


1.14 


2.01 


1.60 


1.32 


2.84 4.30 1.47 


3.75 


.31 


2.67 


7.42 


30.08 


1896 


. 1.32 


2.22 


1.14 


2.31 


2.89 


4.74 8.14 1.95 


5.06 


.43 


1.95 


.51 


32.66 


1897 


. 5.19 


1.50 


3.82 


2.98 


1.47 


4.17 3.10 1.42 


1.21 


.37 


3.84 


2.35 


31.42 


1898 


. 4.78 


2.20 


9.90 


2.47 


5.04 


3.71 .56 2.77 


5.14 


4.79 


2.26 


1.50 


45.12 


1899 


. 1.21 


2.13 


2.86 


.72 


9.83 


1.49 2.30 3.35 


2.11 


3.04 


1.97 


1.93 


32.94 


1900 


. .31 


5.27 


1.22 


1.19 


2.66 


3.96 5.76 6.88 


4.24 


2.96 


4.04 


.68 


39.17 


1901... 


. 1.96 


1.36 


3.68 


1.36 


2.24 


7.76 1.67 1.17 


2.60 


1.98 


1.07 


2.47 


29.32 


1902 


. .67 


1.40 


4.15 


3.34 


1.33 


8.46 3.34 5.64 


4.13 


2.24 


2.62 


2.21 


39.53 


1903 


.1.18 


3.06 


1.42 


5.10 


4.09 


1.98 2.24 3.13 


3.07 


3.67 


1.19 


1.70 


31.83 


1904 


. 2.74 


1.00 


5.53 


5.61 


2.81 


3.44 2.22 4.32 


8.73 


.50 


.02 


1.03 


37.95 


1905 


. 2.06 


1.37 


1.53 


3.99 


3.23 


2.11 3.64 1.41 


3.33 


2.80 


1.34 


1.74 


28.55 


1906 




2.10 


2.90 


2.45 


2.30 


2.12 .61 2.72 


3.72 


1.11 


3.58 


3.26 




1907 


. 5.99 


.24 




2.52 


5.54 


3.30 3.57 8.50 


2.63 


1.28 


2.01 


3.82 




1908 


.1.37 


4.33 




4.95 


8.77 


1.64 1.96 2.77 




.49 


1.44 


1.69 




1909 


. 2.29 


1.84 


1.55 


5.04 








3.10 


4.22 


2.86 




1910 


. 2.71 


1.08 


.47 


3.56 


5.97 


1.33 2.99 .79 


4.41 


1.40 


1.12 


1.18 


27. 01 


1911 


. 2.45 


1.91 


2.32 


3.76 


1.79 


2.43 1.57 2.97 


14.31 


2.49 


1.59 


2.31 


39.90 


1912 


. .91 


1.60 


3.77 


5.07 


4.28 


2.45 2.72 4.33 


1.52 


3.99 


2.32 


.63 


33.59 


1913 


. 3.63 


1.21 


6.15 


3.24 


2.15 


2.31 1.01 3.19 


2.58 


4.21 


3.44 


.83 


33.95 


1914 


. 1.73 


2.99 


.80 


2.67 


6.03 


2.82 1.80 2.49 


1.98 


1.78 


.22 


2.38 


27.69 


1915 


. 1.97 


2.34 


.98 


2.10 


7.32 


2.34 8.74 3.83 


7.10 


1.41 


1.11 


2.70 


41.94 


1916 


. 5.57 


.75 


1.35 


1.51 


6.23 


2.91 1.39 2.51 


2.51 


3.32 


2.41 


1.19 


31.65 


1917 




.56 


3.76 


5.52 


4.54 


8.59 2.08 1.64 


2.75 


1.68 


.08 


.73 




1918 


. 1.39 


1.55 


1.60 


5.21 


4.23 


5.47 2.99 3.68 


4.32 


3.39 


2.07 


2.33 


38.23 


1919 


. .07 


1.86 


2.74 


1.18 


5.31 


8.92 2.73 4.14 


3.97 


4.36 


3.79 


.28 


39.35 


1920 


. .84 


.34 


6.09 


5.74 


5.09 


1.68 2.69 2.32 


2.15 


1.28 


1.01 


2.85 


32.08 


1921 


. 2.75 


.53 


4.11 


4.90 


1.02 


4.30 2.00 5.02 


5.02 


2.15 


3.52 


2.26 


37.58 


1922 


. 1.49 


1.70 


6.22 


5.88 


4.88 


1.15 4.62 2.37 


1.55 


2.20 


3.34 


1.11 


36.51 


1923 


. 1.20 


1.10 


4.58 


1.76 


5.63 


2.30 2.43 3.23 


4.77 


4.49 


1.49 


3.73 


36.71 


1924 


.1.65 


1.58 


3.02 


2.66 


3.46 


8.12 3.51 5.26 


2.76 


2.63 


.89 


4.68 


40.22 


1925 


. .32 


1.67 


2.58 


2.64 


1.08 


3.55 3.02 4.85 


8.37 


4.47 


2.67 


1.38 


36.60 


1926 


. 1.54 


2.07 


3.08 


3.48 


2.16 


5.69 3.13 3.74 


11.95 


5.19 


5.00 


1.03 


48.06 


1927 


. 1.37 


1.45 


4.88 


7.42 


6.42 


3.95 4.27 3.52 


7.78 


2.63 


4.09 


3.06 


50.84 


1928 


. .88 


2.22 


1.25 


2.61 


3.41 


4.48 4.15 1.28 


3.75 


3.83 


2.88 


2.54 


33.28 


1929 


.4.24 


.66 


2.67 


3.85 


7.21 


3.78 8.51 2.14 


1.77 


3.57 


1.56 


1.62 


41.58 


1930 


3.98 


1.50 


2.15 


3.95 


1.26 


2.99 1.81 2.79 


2.85 


1.43 


3.01 


.59 


28.31 



Data from 1893 thru 1905 are for Mount Pulaski, 10 miles southeast of Lincoln. 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



251 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


LINCOLN, Logan county, concluded 


1931... 


.26 


1.25 


2.19 


2.92 


5.55 


4.58 2.30 4.21 


5.62 


2.15 


3.10 


2.39 


36.52 


1932 


. 1.87 


1.09 


2.14 


2.32 


2.28 


4.34 3.93 5.62 


2.53 


4.33 


1.19 


4.54 


36.18 


1933 


. 3.21 


.97 


5.02 


3.90 


8.75 


.91 1.79 2.68 


4.42 


3.50 


.02 


1.49 


36.66 


1934 


. 1.07 


.96 


3.32 


.97 


.74 


2.31 3.80 4.34 


7.22 


2.01 


4.51 


1.73 


32.98 


1935 


. 2.06 


1.59 


3.90 


2.95 


8.51 


5.70 3.70 2.82 


3.88 


1.67 


6.64 


1.34 


44.76 


1936 


. 1.70 


1.85 


1.84 


1.61 


1.19 


.42 1.54 3.28 


5.83 


2.13 


2.50 


2.56 


26.45 


1937 


.4.35 


1.76 


.72 


3.83 


2.81 


5.86 2.95 1.80 


2.48 


2.76 


1.54 


2.00 


32.86 


1938 


. 1.68 


1.95 


4.06 


4.50 


4.73 


4.68 3.49 2.94 


2.40 


2.20 


1.68 


2.06 


36.37 


1939 


. 2.25 


2.82 


4.48 


4.32 


2.19 


5.99 5.30 3.40 


.18 


2.16 


1.25 


1.03 


35.37 


1940 


. 1.32 


.91 


3.28 


3.00 


3.79 


1.62 .54 3.19 


.17 


1.78 


2.95 


1.32 


23.87 


1941... 


.2.63 


.59 


1.36 


4.51 


5.09 


2.83 2.73 2.74 


5.22 


11.07 


2.55 


1.35 


42.67 


1942 


. 1.21 


4.61 


2.54 


2.81 


4.79 


6.72 7.13 2.06 


3.74 


2.29 


5.59 


2.67 


46.16 


1943 


.1.14 


1.30 


2.10 


5.87 


9.75 


2.04 1.40 .31 


1.63 


2.71 


1.66 


1.06 


30.97 


1944 


. .59 


2.72 


3.96 


7.54 


2.82 


1.97 1.09 3.33 


5.13 


1.55 


1.00 


1.84 


33.54 


1945 


. .89 


1.35 


4.67 


4.19 


5.19 


4.85 .84 1.47 


6.88 


.86 


1.88 


3.23 


36.30 


1946 


. .86 


1.41 


3.21 


1.86 


5.73 


5.86 1.12 3.83 


1.01 


4.75 


5.41 


1.98 


37.03 


Aver 


. 2.02 


1.73 


3.10 


3.47 


4.23 


3.76 3.03 3.08 


4.09 


2.61 


2.38 


2.05 


35 55 


LOUISIANA, 


Pike county, Missouri 


1878... 


.1.32 


3.15 


4.52 


3.04 


6.01 


1.05 3.40 1.65 


1.00 


2.15 


1.40 


2.55 


31.24 


1879 


. .95 


.35 


1.18 


3.40 


.92 


1.70 2.10 2.45 


1.65 


2.05 


3.20 


1.60 


21.55 


1880 


. .80 


1.45 


1.72 


1.24 


6.37 


5.50 1.10 2.85 


1.45 


.90 


1.90 


1.40 


26.68 


1881... 





3.70 


4.95 


1.10 


1.37 


7.40 1.00 


3.65 


8.95 


3.95 


3.40 


38.47 


1882 


.1.65 


6.55 


3.27 


2.82 


4.05 


7.42 1.80 2.17 


1.55 


4.72 


2.87 


2.15 


41.02 


1883 


. 1.65 


5.75 


1.35 


1.60 


4.27 


9.75 2.75 1.35 


.19 


3.92 


1.82 


.61 


35.01 


1884 


. 1.06 


3.70 


2.35 


1.07 


3.36 


4.86 5.28 3.55 


7.60 


1.82 


1.30 


3.20 


39.15 


1885 


. 2.88 


1.00 


.10 


6.00 


2.95 


4.39 1.75 




1.32 


1.35 


1.14 




1886 


.1.63 


.31 


.67 


2.03 


2.36 


3.46 .02 5.04 


7.24 


.50 


.85 


.47 


24.58 


1887 


. 1.41 


2.97 


1.45 


2.70 


3.15 


1.97 1.37 1.28 


3.17 


.41 


2.15 


3.62 


25.65 


1888 


. 1.76 


1.37 


3.09 


.69 


5.10 


5.64 2.34 5.05 


1.94 


1.10 


3.90 


2.45 


34.43 


1889 








3.44 


6.30 


2.84 2.23 1.05 


4.23 


2.52 


2.74 


1.33 




1890 


. 3.37 


1.14 


2.16 


1.77 


2.94 


2.78 .48 1.67 


2.36 


3.07 


1.45 


.20 


23.39 


1891 


.54 


2.28 


1.76 


2.61 


1.87 


4.40 4.94 2.67 


1.15 


1.44 


2.54 


.64 


26.84 


1892 


. 1.11 


3.74 


1.73 


4.58 


8.50 


3.31 4.41 2.11 


4.12 


.32 


2.79 


1.57 


38.29 


1893 


. 


1.60 


2.45 


7.77 


5.07 


3.84 2.70 .35 


1.55 


.51 


1.06 


.13 


27.03 


1894 


.1.69 


2.08 


2.30 


2.17 


5.08 


2.83 .82 3.28 


3.14 


1.08 


1.28 


1.96 


27.71 


1895 . . . 


. 1.30 


.60 


2.27 


1.73 


3 76 


2 82 9 22 5 03 


3 14 


74 








1896... 
























1897 




















2 44 




1898 


. 3.85 


1.82 


4.91 


4.38 


7.83 


7.15 4.66 1.34 


4.66 


2.41 


3.19 


1.58 


47.78 


1899 


. .87 


1.93 


3.03 


1.62 


8.77 


2.23 4.20 6.85 


3.56 


3.34 


2.77 


1.65 


40.82 


1900 


. 1.83 


5.45 


1.51 


1.64 


4.24 


2.56 2.72 2.53 


4.32 


4.08 


1.53 


.34 


32.75 


1901 


. 2.25 


1.49 


3.73 


2.15 


1.16 










3 58 




1902 


. 1.50 


1.57 


3.42 


2.93 


4.93 


7.68 5.06 5.23 


3.62 


3.06 


3.26 


2.99 


45.25 


1903 


. 1.97 


3.91 


3.91 


3.83 


3.34 


3.61 2.47 4.02 


5.99 


1.73 


1.09 


.95 


36.82 


1904 


. 3.91 


1.59 


4.63 


6.04 


4.91 


4.14 3.42 6.23 


5.37 


.40 


.28 


1.04 


41.96 


1905 


. 2.36 


1.49 


1.34 


2.76 


2.51 


1.21 3.15 3.82 


6.59 


4.55 


1.50 


1.57 


32.85 


1906 


. 3.09 


3.08 


3.24 


2.72 


3.33 


3.61 .94 2.52 


4.83 


1.17 


2.92 


2.83 


34.28 


1907 


.5.55 


.70 


4.04 


2.74 


3.81 


4.03 6.34 5.40 


.96 


2.24 


1.52 


1.68 


39.01 


1908 


. .81 


3.45 


2.48 


2.82 


5.36 


3.49 5.42 3.31 


2.08 


.75 


1.63 


1.50 


33.10 


1909 


. 3.33 


4.83 


2.20 


5.13 


6.59 


2.22 4.62 .51 


6.42 


6.69 


3.77 


2.36 


48.67 


1910 


. 1.97 


1.56 


.20 


2.82 


7.34 


1.92 10.92 1.85 


6.87 


1.08 


1.07 


.84 


38.44 


1911... 


. 3.02 


3.02 


2.86 


5.03 


1.25 


2.56 2.73 3.47 


8.38 


3.44 


1.95 


2.09 


39.80 


1912 


. .56 


1.99 


6.47 


5.91 


7.81 


4.94 2.75 8.70 


3.97 


4.29 


2.06 


.98 


50.43 


1913 


. 3.17 


3.70 


6.24 


3.03 


.88 


5.00 1.54 2.38 


4.63 


3.85 


3.90 


1.67 


39.99 


1914 


. .70 


1.90 


4.07 


3.60 


1.48 


.94 1.84 3.31 


4.64 


5.92 


.45 


1.89 


30.74 


1915 


. 2.45 


1.81 


.90 


2.56 


8.41 


7.15 7.69 6.71 


4.76 


1.62 


3.85 


1.65 


49.56 



252 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


LOUISIANA, 


Pike 


county, Missouri 


, concluded 


1916... 


. 7.44 


1.26 


1 67 


1.28 


10.01 


5.31 .28 14.86 


3.12 


1.82 


1.91 


1.65 


50.61 


1917 


. 2.13 


.21 


5.72 


4.28 


5.94 


3.01 2.89 4.01 


2.55 


1.59 


.23 


.66 


33.22 


1918 


. 1.83 


1.56 


1.10 


6.54 


3.89 


3.77 1.84 4.98 


5.07 


3.62 


3.57 


1.95 


39.72 


1919 


. .05 


2.74 


1.95 


2.03 


4.67 


3.76 1.31 5.71 


5.63 


8.20 


2.93 


.56 


39.54 


1920 


. 1.03 


.33 


3.76 


4.03 


7.52 


1.14 1.18 4.81 


2.84 


2.45 


1.55 


2.51 


33.15 


1921 


. 1.65 


1.08 


4.14 


7.31 


4.36 


7.28 1.67 5.45 


8.14 


2.31 


3.75 


2.49 


49.63 


1922 


. 2.21 


1.32 


6.39 


8.48" 


2.22 


1.16 3.52 2.22 


3.10 


2.25 


4.27 


.97 


38.11 


1923 


. .77 


.93 


5.69 


3.37 


2.87 


3.85 1.55 7.94 


4.55 


3.71 


1.26 


3.87 


40.36 


1924 


. 1.18 


2.33 


4.31 


2.42 


5.34 


5.20 4.65 5.07 


2.07 


2.94 


2.07 


3.71 


41.29 


1925 


. .92 


3.62 


5.16 


2.26 


1.38 


4.69 3.45 3.86 


3.86 


5.91 


4.00 


1.21 


40.32 


1926 


. 1.85 


3.44 


5.08 


3.89 


2.45 


5.96 5.57 8.34 


14.36 


4.21 


4.85 


1.99 


61.99 


1927 


. 1.22 


.84 


7.05 


8.94 


7.24 


4.57 4.48 3.79 


2.61 


4.76 


5.21 


1.93 


52.64 


1928 


. .30 


2.91 


.81 






1.90 1.40 


3.23 


4.53 


3.50 


1.79 




1929 




.53 


4.41 


5.10 


8.80 


6.55 9.10 2.08 


3.92 


5.60 


1.70 


1.60 




1930 


. 4.90 


.60 


.70 


.83 


2.27 


4.77 .54 1.77 


3.62 


2.25 


2.33 


.57 


25.15 


1931... 


.25 


2.68 


3 3? 


1,58 


7.44 


4.60 3.65 3.47 


3.09 


3.08 


3.74 


3.80 


40.70 


1932 


. 1.45 


1.03 


1.11 


2.98 


1.98 


7.15 5.27 9.79 


1.20 


3.15 


1.05 


4.06 


40.22 


1933 


. 2.15 


.37 


5.22 


2.88 


7.27 


.73 2.11 4.15 


2.59 


3.02 


.75 


1.66 


32.90 


1934 


. 1.40 


.49 


1.87 


3.05 


.35 


2.35 .05 3.66 


5.33 


1.74 


5.42 


1.55 


27.26 


1935 


. 1.82 


3.10 


4.85 


3.07 


10.33 


3.77 3.82 1.87 


3.20 


3.34 


4.22 


.70 


44.09 


1936 


.72 


.95 


1.05 


1.37 


3.45 


2.45 .85 .76 


10.17 


1.55 


1.78 


2.30 


27.40 


1937 


. 3.92 


.78 


.86 


5.18 


5.40 


3.45 1.35 1.69 


1.55 


1.75 


2.06 


2.45 


30.44 


1938 


. 4.20 


1.92 


3.64 


4.09 


5.33 


3.25 2.15 3.80 


2.30 


2.33 


3.68 


3.65 


40.34 


1939 


. 1.77 


3.35 


2.74 


3.92 


3.04 


6.02 4.09 6.41 


.17 


2.64 


2.62 


1.20 


37.97 


1940 


. .53 


.17 


2.05 


2.82 


1.61 


3.89 .09 5.80 


.25 


2.10 


3.10 


1.92 


24.33 


1941... 


. 3.75 


.30 


1.40 


4.82 


2.55 


6.11 5.00 1.69 


7.20 


16.50 


2.23 


1.08 


52.63 


1942 


. .90 


2.05 


1.79 


2.84 


6.26 


7.62 4.27 2.42 


4.84 


1.52 


5.44 


3.78 


43.73 


1943 


. .60 


.72 


1.33 


1.88 


13.63 


7.48 2.66 2.93 


4.00 


3.15 


2.00 


1.58 


41.96 


1944 


. .85 




4.00 


6.73 


1.79 


.65 1.11 4.30 


3.00 


1.95 








1945 


. .94 


1.40 


6.70 


6.24 


3.01 


9.49 .87 1.53 


9.35 


.91 


.96 


1.69 


43.09 


1946 


. 2.65 


1.67 


2.63 


1.48 


4.60 


3.13 4.35 6.84 


1.80 


4.76 


6.44 


1.20 


41.55 


Aver 


.1.87 


2.03 


3.02 


3.44 


4.61 


4.21 3.09 3.80 


3.99 


3.00 


2.53 


1.85 


37 44 


MACOMB, McDonough county 


1911 




















3.09 




1912 


.11 


1.24 


1.44 


3.90 


2.57 


1.48 . . 2.37 


2.39 


4 64 


.62 


76 




1913 


. 1.11 


3.27 


3.18 


3.16 


2.75 


3.08 .16 1.08 


1.89 


2.20 


2.71 


1.72 


26.31 


1914 


. 2.09 


1.50 


1.59 


1.84 


1.62 


2.24 2.50 2.71 


4.82 




.23 


1.55 




1915 


. 2.07 


1.69 


.58 


1.85 


7.35 


6.29 11.31 1.27 


4.58 


.32 


2.65 


1.07 


41.02 


1916... 


. 7.22 






2.35 


7.37 


3.04 .92 5.79 


4.55 


2.74 


1.92 


.94 




1917 


. .78 


.23 


3.57 


3.32 


4.58 


11.58 1.77 3.00 


4.06 


2.08 


.01 


.87 


35.85 


1918 


. 1.65 


2.05 


.87 


2.24 


6.01 


5.93 1.26 2.51 


2.36 


4.78 


1.84 


2.45 


33.95 


1919 


. T 


2.31 


2.31 


1.22 


5.06 


5.66 6.67 2.44 


4.46 


1.30 


3.01 


.40 


34.85 


1920 


. .74 


.23 


5.42 


5.79 


3.95 


4.47 4.17 1.45 


3.28 


1.88 


1.19 


1.09 


33.66 


1921... 


. 1.85 


.22 


3.99 


5.36 


2.34 


3.77 2.14 4.54 


8.76 


3.78 


1.55 


1.72 


40.02 


1922 


. .94 


1.87 


4.06 


4.50 


3.53 


1.91 6.36 2.24 


3.91 


1.19 


4.65 


.45 


35.61 


1923 


.1.38 


.65 


2.96 


.95 


2.73 


3.46 3.88 4.11 


4.74 


2.09 


1.45 


1.92 


30.32 


1924 


. 1.66 


1.70 


2.19 


1.80 


2.72 


9.12 8.11 4.03 


3.18 


1.79 


1.60 


2.22 


40.12 


1925 


. .43 


1.56 


1.15 


4.60 


1.98 


4.94 2.70 3.42 


3.48 


3.17 


2.09 


1.32 


30.84 


1926... 


. 1.20 


1.49 


2.07 


2.32 


1.84 


6.36 5.49 1.97 


9.96 


3.04 


4.30 


.95 


40.99 


1927 


. 1.45 


2.31 


3.74 


4.68 


5.65 


4.33 3.75 2.82 


4.19 


6.25 


3.29 


2.13 


44.59 


1928 


. .46 


1.21 


1.12 


3.14 


3.16 


4.03 2.49 1.89 


3.02 


3.22 


4.86 


1.77 


30.37 


1929 


. 3.78 


.85 


4.83 


4.21 


3.30 


7.56 9.58 2.36 


2.73 


3.58 


1.83 


1.06 


45.67 


1930 


. 2.77 


1.09 


1.16 


2.52 


1.41 


4.09 .49 1.95 


1.53 


2.90 


2.90 


.42 


23.23 


1931... 


.57 


1.42 


3.34 


2.36 


4.30 


3.44 3.19 3.32 


6.53 


3.44 


4.05 


2.47 


38.43 


1932 


. 1.62 


1.05 


2.37 


.64 


5.06 


2.84 4.81 6.27 


1.94 


2.81 


1.02 


3.70 


34.13 


1933 


. 2.38 


.94 


2.81 


2.20 


7.18 


1.74 3.57 5.11 


3.85 


1.63 


.35 


1.31 


33.07 


1934 


. .67 


.82 


2.32 


1.43 


.65 


3.78 1.40 1.89 


8.92 


1.46 


6.68 


1.17 


31.19 


1935 


. 2.12 


2.44 


3.78 


2.39 


9.81 


5.61 6.19 .82 


6.56 


2.15 


3.70 


1.23 


46.80 


1936... 


. 1.82 


1.97 


.93 


1.82 


2.23 


1.47 .41 2.82 


7.55 


2.61 


.65 


2.47 


26.75 


1937 


. 3.65 


.72 


1.12 


3.69 


3.36 


5.84 5.75 2.64 


3.32 


1.90 


1.70 


1.67 


35.36 


1938 


. 4.30 


2.00 


5.24 


3.72 


5.97 


5.72 2.56 2.81 


1.56 


2.49 


2.28 


1.42 


40.07 


1939 


.1.19 


1.32 


3.74 


5.22 


2.46 


4.07 2.20 7.21 


.30 


2.85 


.91 


.85 


32.32 


1940 


1.28 


.81 


1.74 


3.01 


2.18 


2.24 2.28 2.88 


.05 


2.98 


2.07 


1.73 


23.25 



1949] CLIMATE OF ILLINOIS: APPENDIX B 253 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MACOMB, 


McDonough county, concluded 


1941... 


. 2.91 


.49 


.64 


3.58 


2.85 5.73 


1.02 3.60 


6.68 10.04 


1.40 


1.42 


40.36 


1942 


. .48 


3.72 


2.64 


2.75 


4.81 5.14 


3.72 2.76 


3.19 


1.11 


5.57 


3.30 


39.19 


1943 


. 1.40 


.73 


1.48 


4.60 


7.85 3.79 


4.40 2.35 


1.79 


2.14 


.72 


.77 


32.02 


1944 


. .37 


1.97 


5.63 


7.97 


4.65 2.03 


1.87 5.96 


4.45 


4.26 


2.85 


1.30 


43.31 


1945 


. 1.08 


1.29 


5.81 


4.88 


7.64 6.52 


.47 .57 


7.52 


1 76 


1.65 


2.36 


41.55 


1946 


. 2.90 


.52 


3.37 


1.99 


4.56 7.40 


1.08 4.95 


2.14 


3.28 


4.01 


2.32 


38.52 


Aver 


.1.73 


1.40 


2.74 


3.20 


4.16 4.59 


3.49 3.08 


4.12 


2.88 


2.35 


1.59 


35 33 


MORRISONVILLE, 


Christian county 


1896 


.43 


1.41 


1.25 


1.98 


5.04 3.65 


5.98 3.07 


4.44 


1.19 


2.59 


.44 


31.47 


1897 


. 3.53 


1.20 


6.02 


5.27 


4.09 4.99 


3.60 1.36 


.29 


.12 


5.29 


2.78 


38.54 


1898 


. 5.02 


2.74 


6.72 


2.92 


9.14 2.74 


2.74 3.38 


4.60 


5.11 


3.09 


2.02 


50.22 


1899 


. 1.94 


2.42 


2.96 


2.25 


5.66 1.84 


.72 3.84 


.98 


3.75 


2.11 


2.23 


30.70 


1900 


. .43 


6.39 


1.59 


1.16 


2.95 


4.35 1.95 


4.22 


3.11 


2.21 


1.06 




1901 


. 1.52 


1.66 


2.26 


2.57 


1.98 5.53 


.71 1.13 


1.50 


3.27 


1.78 


3.97 


27.88 


1902 


. 1.00 


.93 


4.20 


2.81 


1.02 10.61 


1.30 4.43 


2.89 


2.45 


2.93 


3.02 


37.59 


1903 


. 1.47 


3.25 


2.35 


2.72 


1.70 3.15 


4.59 4.36 


3.25 


1.73 


.55 


1.82 


30.94 


1904 


. 2.33 


1.14 


8.67 


5.10 


2.89 4.05 


6.78 3.19 


4.62 


.74 


.07 


1.20 


40.78 


1905 


.2.26 


.99 


1.81 


3.87 


3.17 1.91 


6.10 1.78 


2.56 


5.53 


1.74 


2.31 


34.03 


1906 


. 3.44 


2.60 


3.65 


2.41 


2.77 1.45 


1.87 3.34 


2.90 


1 17 


3.92 


2.47 


31.99 


1907 


. 5.68 


.19 


2.03 


2.60 


3.28 4.37 


6.88 5.12 


1.02 


1.62 


2.08 


2.63 


37.50 


1908 


. 1.33 


3.48 


2.14 


5.57 


7.49 2.15 


2.21 2.71 


1.49 


.11 


2.91 


1.48 


33.07 


1909 


. 1.66 


3.79 


1.55 


5.88 


5.52 2.48 


6.77 .40 


3.39 


3 37 


2.74 


1.47 


39.02 


1910 


. 1.77 


1.42 


.04 


3.43 


8.65 3.77 


5.05 2.19 


4.78 


2.44 


1.66 


1.49 


36.69 


1911... 


. 2.49 


1.54 


1.57 


5.79 


.67 3.18 


1.59 5.77 


8.99 


2.32 


2.74 


1.89 


38.54 


1912 


. .74 


.97 


4.62 


5.70 


3.64 1.78 


2.00 2.56 


1.18 


1.88 


1.73 


.51 


27.31 


1913 


. 4.84 


1.34 


6.07 


3.55 


1.02 1.97 


3.60 1.38 


3.66 


4.00 


4.21 


.62 


36.26 


1914 


. 2.05 


2.25 


.62 


2.44 


.31 1.37 


1.85 2.81 


2.83 


1.84 


1.11 


1.62 


21.10 


1915 


. 1.83 


2.16 


.70 


1.33 


8.76 7.48 


4.14 10.09 


2.05 


.81 


1.18 


3.84 


44.37 


1916 


. 7.42 


1.15 


1.26 




3 . 38 7 . 86 


1.24 2.45 


2.36 


2.05 


1.95 


1.48 




1917 


. 1.22 


.53 


3.07 


3.78 


4.72 6.05 


2.56 7.59 


4.10 


2.91 


.77 


.67 


37.97 


1918 


. 2.23 


1.21 


.86 


7.12 


5.06 1.58 


3.69 4.69 


5.37 


2.68 


1.96 


2.39 


38.84 


1919 


. -.40 


1.45 


2.12 


1.30 


4.88 9.33 


.50 3.19 


4.57 


7 M 


3.15 


.49 


38.61 


1920 


.1.15 


.76 


3.57 


2.11 


6.49 3.57 


2.45 3.78 


3.05 


2.04 


.89 


2.55 


32.41 


1921 


. 1.64 


.81 


5.90 


4.80 


1.67 3.22 


8.10 5.11 


5.60 


2.02 


4.27 


2.42 


45.56 


1922 




.81 


9.78 


8 48 


3 68 90 


1 95 1 05 


1 29 


2 20 


2 69 


2 64 




1923 


.1.61 


1.35 


5.25 


2.72 


4.73 2.20 


1.32 3.26 


7.06 


4.76 


2.21 


4.28 


40.75 


1924 


. 1.92 


1.58 


2.59 


.88 


3.19 7.12 


3.00 1.93 


3.44 


1.42 


1.19 


4.96 


33.22 


1925 


. .39 


1.06 


3.33 


2.00 


1.49 7.33 


3.53 3.38 


2.37 


2.79 


3.08 


1.31 


32.06 


1926 


.1.55 


2.98 


2.72 


3.78 


1.52 4.19 


2.37 4.20 


11.29 


4.43 


2.69 


1.73 


43.45 


1927 


. 2.07 


1.10 


4.68 


7.59 


10.96 4.33 


3.92 4.23 


3.57 


4.50 


5.66 


1.92 


54.53 


1928 


. 1.71 


2.13 


1.85 


3.37 


2.91 7.66 


4.71 1.00 


2.36 


4.45 


1.49 


2.21 


35.85 


1929 


. 2.98 


.72 


3.46 


5.60 


10.10 4.02 


5.95 2.40 


1.17 


3.76 


1.02 


2.48 


43.66 


1930 


. 5.02 


1.50 


1.45 


1.38 


1.08 3.26 


2.84 1.49 


2.71 


1.23 


1.78 


.40 


24.14 


1931... 


.27 


1.75 


1.89 


2.38 


2.77 2.63 


1.36 2.48 


3.80 


3.28 


6.08 


2.50 


31.19 


1932 


. 2.55 


2.41 


1.21 




2.28 4.15 


2.43 9.30 


1.33 


3.23 


1.26 


2.90 




1933 


. 3.54 


1.59 


3.16 


3.11 


5.74 1.24 


.90 2.84 


3.74 


3.97 


1.33 


.43 


31.59 


1934 


. 1.06 


.69 


2.44 


1.29 


1.14 5.84 


2.81 5.03 


7.06 


1.69 


3.78 


1.54 


34.37 


1935 


. 1.83 


1.35 


3.30 


2.32 


7.07 2.73 


4.25 .81 


3.27 


2.78 


3.73 


1.46 


34.90 


1936 


.1.80 


2.49 


1.03 


1.57 


.78 1.88 


.51 .51 


6.01 


3.31 


3.18 


2.27 


25.34 


1937 


. 4.96 


1.21 


.53 


4.49 


3.94 5.16 


3.69 1.95 


2.16 


3.42 


1.59 


2.03 


35.13 


1938 


. 1.18 


1.81 


9.13 


3.51 


3.88 4.33 


3.38 3.73 


1.68 


1.45 


2.16 


2.43 


38.67 


1939 


. 2.77 


3.16 


3.10 


4.45 


1.20 5.28 


1.42 11.31 


.40 


1.35 


1.21 


1.05 


36.70 


1940 


.1.17 


.76 


1.89 


2.33 


4.67 1.47 


.56 6.39 


.27 


1.44 


1.90 


1.67 


24.52 


1941 


. 1.92 


.65 


.48 


5.57 


1.61 4.85 


1.67 2.40 


4.13 


6.68 


3.52 


.82 


34.30 


1942 


.1.22 


2.70 


2.14 


1.74 


4.47 6.96 


5.55 1.48 


2.53 


2.33 


4.59 


2.11 


37.82 


1943 


. .51 


.76 


2.80 


2.59 


8.59 6.98 


2.01 .39 


2.00 


1.59 


1.59 


1.21 


31.02 


1944 


. .11 


1.84 


3.22 


8.48 


4.56 .27 


1.47 5.02 


3.95 


1.44 


1.96 


1.63 


33.95 


1945 


. .85 


2.16 


7.43 


4.61 


2.93 6.73 


2.62 2.91 


7.26 


1.96 


1.85 


1.81 


43.12 


1946 


. 1.27 


2.05 


1.89 


2.39 


5.47 2.80 


2.94 6.95 


2.32 


3.17 


5.80 


2.00 


39.05 


Aver 


. . 2.08 


1.73 


3.10 


3.57 


4.05 4.09 


3.13 3.49 


3.41 


2.71 


2.49 


1.93 


35.69 



254 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


NEWTON, Jasper county 


1912 


. 1.28 


2.47 


4.36 


5.02 


4.16 


2.67 4.65 


4.53 2.10 


2.44 


1.25 


.76 


35.69 


1913 


. 6.56 


.94 


6.30 


2.16 


1.39 


1.12 1 . 62 


3.11 2.56 


4.45 


5.93 


1.01 


37.15 


1914 


.2.32 


3.30 


1.83 


2.35 


.28 


3.96 2.66 


6.08 2.12 


2.98 


1.22 


2.66 


31.76 


1915 


. 3.39 


2.21 


.68 


.60 


7.64 


5.84 3.61 


7.97 1.39 


.43 


2.95 


4.73 


41.44 


1916 


. 8.18 


1.04 


1.59 


.81 


2.40 


5.61 .78 


2.05 1.49 


1.87 


1.74 


1.88 


29.44 


1917 


. 2.81 


.18 


3.49 


6.76 


5.20 


5.34 .24 


1.92 


2.88 


1.00 






1926 


















2 56 


1 96 




1927 


. 3.11 


1.08 


7.34 


5.62 


10.17 


2.12 4.07 


4.71 3.39 


4.01 


5.54 


3.60 


54.76 


1928 


. 1.49 


5.88 


3.58 


2.48 


2.09 


9.05 3.94 


6.06 2.08 


5.39 


2.90 


2.58 


47.52 


1929 


. 4.56 


1.41 


3.41 


6.62 


10.26 


5.45 4.84 


1.90 3.03 


4.27 


2.23 


4.07 


52.05 


1930 


. 8.59 


2.68 


1.07 


2.21 


1.65 


3.35 1.32 


2.81 7.96 


1.16 


2.20 


1.03 


36.03 


1931 


.67 


2.36 


3.35 


2.21 


3.33 


2.14 2.91 


7.10 4.90 


2.52 


5.28 


5.36 


42.10 


1932 


. 5.10 


1.15 


1.95 


1.75 


2.50 


3.96 3.19 


4.85 6.88 


3.48 


3.16 


4.52 


42.49 


1933 


. 3.18 


1.73 


7.88 


5.04 


7.43 


.98 .95 


1.68 4.37 


1.35 


.55 


1.25 


36.39 


1934 


. 2.00 


.82 


3.84 


3.02 


1.40 


2.43 7.38 


4.79 6.02 


.87 


6.30 


2.28 


41.15 


1935 


. 2.77 


.72 


6.92 


2.17 


10.40 


3.46 2.34 


2.50 3.65 


1.33 


5.50 


1.09 


42.85 


1936 


. 1.34 


2.63 


2.50 


1.96 


1.14 


1.97 2.89 


2.03 2.33 


4.93 


4.47 


2.78 


30.97 


1937 


. 9.29 


1.75 


2.25 


5.11 


3.70 


4.76 4.26 


1.47 2.73 


4.65 


1.18 


3.75 


44.90 


1938 


. 1.06 


1.99 


8.22 


2.13 


4.56 


4.78 4.40 


4.41 1.71 


1.63 


2.63 


1.96 


39.48 


1939 


. 3.99 


2.79 


2.51 


5.80 


3.37 


4.34 2.10 


4.43 .91 


1.09 


1.91 


1.78 


35.02 


1940 


. 2.00 


2.07 


1.89 


5.27 


4.10 


4.09 1.87 


2.29 .69 


2.72 


3.59 


3.07 


33.65 


1941... 


. 1.31 


.56 


.58 


3.58 


2.69 


9.44 2.61 


1.10 2.19 


7.16 


3.76 


1.39 


36.35 


1942 


. 1.67 


3.56 


3.99 


3.02 


5.02 


9.68 3.00 


4.24 2.30 


1.57 


5.62 


2.06 


45.73 


1943 


. .96 


.68 


2.56 


3.78 


13.46 


3.39 3.64 


.03 2.30 


3.09 


2.33 


1.97 


38.19 


1944..... . 


. .42 


2.75 


2.71 


6.49 


3.48 


1.17 .87 


6.71 2.62 


.44 


1.48 


1.12 


30.26 


1945 


.1.54 


3.64 


8.70 


6.71 


4.50 


8.78 2.64 


2.99 6.51 


1.82 


3.06 


2.09 


52.98 


1946 


. 2.13 


3.42 


2.11 


2.37 


11.07 


.99 5.02 


3.55 1.24 


4.36 


3.97 


3.02 


43.25 


Aver 


. 3.14 


2.07 


3.68 


3.66 


4.90 


4.26 2.99 


3.67 3.10 


2.80 


3.12 


2.45 


39 84 


PALESTINE, Crawford county 


1882 












5.60 1.92 


3.27 2.17 


1.68 


2.02 


.3.88 




1883 


. 2.10 


8.47 


3.62 


3.40 


2.09 


4.43 8.30 


1.95 .35 


7.58 


7.65 


4.10 


54.04 


1884 


. 1.94 


4.40 


1.79 


3.05 


5.38 


5.09 3.34 


1.75 5.29 


1.40 


2.27 


5.85 


41.55 


1885 


. 3.25 


1.65 


.46 


4.70 


2.85 


3.40 2.40 


3.08 8.73 


2.59 


2.61 


2.33 


38.05 


1886... 


. 2.88 


1.70 


2.55 


5.36 


3.56 


6.15 3.69 


3.21 2.21 


.26 


5.52 


2.60 


39.69 


1887 


. 1.01 


4.83 


4.18 


3.84 


5.30 


1 . 30 1 . 59 


2.60 2.44 


.88 


4.25 


3.40 


35.62 


1888 


. 1.75 


1.47 


4.72 


2.08 


2.40 


2.30 


4.50 .76 


2.55 


5.67 


2.16 




1889 


.2.72 


2.20 


1.71 


1.37 


4.00 


5.50 2.46 


2.95 5.44 


2.33 


5.43 


1.93 


38.04 


1890 


. 9.20 


4.96 


5.65 


4.07 


4.31 


2.58 2.35 


3.56 5.38 


2.97 


2.74 


1.90 


49.67 


1891 


2 00 


5 68 


4 15 


1 84 


76 


86 


6 30 1 33 


1 38 


5 65 


2.13 




1892 


.1.15 


4.97 


1.88 


9.18 


6.60 


3.53 2.47 


3.02 1.60 


1.08 


4.43 


2.00 


41.91 


1893 


. 2.00 


4.39 


3.40 


9.12 


3.70 


4.60 .71 


2.71 3.33 


3.37 


3.12 


1.53 


41.98 


1894 


. 2.21 


5.01 


1.97 


2.88 


5.60 


2.68 1.85 


3.92 2.94 


2.15 


1.05 


2.22 


34.48 


1895 


. 4.37 




1.66 


3.65 


3.43 


2.05 7.04 


3.10 1.46 


.57 


4.85 


3.69 




1896... 


. 1.00 


2.47 


2.19 


1.07 


3.90 


7.33 7.76 


3.22 4.30 


2.60 


5.30 


.54 


41.68 


1897 


. 3.38 


2.95 


11.02 


5.60 


3.45 


3.61 2.08 


.01 1.60 


1.09 


6.33 


3.18 


44.30 


1898 


.5.33 


1.56 


11.45 


3.82 


3.15 


4.06 2.80 


4.29 7.42 


4.61 


3.15 


2.33 


53.97 


1899 


. 3.74 


1.95 


4.96 


1.91 


3.28 


3.40 2.98 


3.12 1.47 


2.99 


2.13 


3.62 


35.55 


1900 


. 1.95 


4.55 


4.02 


1.47 


3.86 


6.77 11.96 


2.00 4.43 


1.59 


4.06 


2.64 


49.30 


1901... 


. 1.03 


2.95 


5.57 


2.52 


1.34 


6.42 .97 


2.75 1.38 


2.79 


2.00 


5.34 


35.06 


1902 


. 2.46 


1.43 


3.77 


2.23 


4.60 


7.73 1.63 


6.22 3.14 


2.40 


3.37 


3.78 


42.76 


1903 


.2.60 


3.97 


4.47 


5.41 


.52 


2.51 4.51 


6.83 .73 


2.66 


1.95 


1.42 


37.58 


1904 


. 4.10 


2.30 


9.76 


1.95 


3.16 


2.22 3.81 


2.78 5.45 


.10 


1.10 


4.48 


41.21 


1905 


. 2.00 


1.45 


2.82 


3.36 


3.67 


1.46 6.28 


2.94 2.44 


8.54 


1.80 


2.61 


39.37 


1906... 


. 4.81 


2.25 


5.07 


1.32 


1.40 


1.66 3.56 


9.97 4.05 


1.09 


5.05 


3.35 


43.58 


1907 


. 6.55 


.10 


5.55 


3.54 


4.15 


4.48 4.15 


7.32 .60 


2.70 


2.90 


3.34 


45.38 


1908 


.1.60 


5.89 


4.13 


4.64 


9.58 


1.96 2.48 


.87 1.78 


.10 


3.23 


1.40 


37.66 


1909 






4.51 


3.47 


3.18 


6.42 5.24 


.73 1.83 


3.11 


3.70 


3.61 




1910 


. 2.71 


3.67 


.19 


2.53 


3.37 


2.27 11.11 


.59 4.51 


6.64 


2.45 


2.19 


42.23 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



255 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PALESTINE, Crawford 


county, concluded 


1911... 


. . 2.95 


2.56 


2.33 


5.18 1.42 


4.35 


2.26 1.78 


11.52 


4.19 


2.26 


2.94 


43.74 


1912..... 


. . 1.23 


2.16 


4.17 


4.53 5.69 


3.62 


6.83 5.30 


5.30 


1.62 


2.59 


1.30 


44.34 


1913 


. . 7.02 


1.61 


8.05 


2.53 .79 


2.36 


3.44 4.36 


3.23 


3.08 


5.35 


1.15 


42.97 


1914 


, . 2 . 63 


2.48 


2.18 


3.34 .61 


1.41 


1.24 4.26 


3.33 


5.20 


.56 


3.26 


30.50 


1915 


. . 3.99 


1.28 


1.64 


.95 8.28 


2.36 


4 . 94 6 . 74 


1.74 


1.32 


3.15 


5.19 


41.58 


1916... 


. . 9.76 


1.14 


1.53 


1.71 3.05 


8.95 


.80 3.19 


2.05 


1.96 


1.62 


2.13 


37.89 


1917 


. . 4.23 


.55 


3.29 


7.30 3.78 


4.49 


4.37 2.49 


1.58 


4.26 


.62 


1.38 


38.34 


1918 


, . 2.74 


1.32 


1.56 


6.77 7.98 


5.10 


3.53 6.56 


5.36 


2.92 


2.77 


9.53 


56.14 


1919 


, . 1.77 


1.27 


4.15 


2.37 5.49 


5.68 


2.77 2.21 


1.77 


10.95 


3.16 


.83 


42.42 


1920 


,. 2.13 


1.32 


5.10 


3.27 6.49 


.86 


3.61 4.47 


2.14 


2.47 


1.20 


3.72 


36.78 


1921... 


. . 2 . 26 


.98 


6.35 


2.53 1.22 


2.01 


1.51 7.78 


6.13 


2.70 


4.27 


3.84 


41.58 


1922 


, . 1.09 


1.67 


7.77 


5.75 8.77 


2.65 


2.47 2.98 


.75 


1.94 


1.60 


4.72 


42.16 


1923 


. . 2.54 


1.24 


5.08 


3.39 4.16 


2.96 


.48 5.87 


2.27 


3.41 


1.88 


4.22 


37.50 


1924 


. . 2.37 


1.78 


2.41 


1.30 4.16 


3.34 


1.36 2.74 


5.39 


.52 


.78 


4.12 


30.27 


1925 


,. .33 


1.91 


1.36 


1.84 2.21 


3.28 


1.62 3.08 


4.15 


3.37 


4.59 


2.44 


30.18 


1926 


. . 2 . 77 


3.25 


3.62 


3.95 1.63 


1.34 


2 . 66 9 . 24 


7.60 


3.05 


2.17 


2.24 


43.52 


1927 


3 99 


1 49 


5 90 


5 87 11 23 


2 49 


2 41 1 86 












1928 








3 68 


7 99 


1.11 2.49 


1 63 


4 04 


3 33 






1929 


. . 4.98 


1.87 


3.62 


5.10 9.80 


5.67 


3.82 1.15 


2.39 


3.01 


1.60 


3.93 


46.94 


1930 


5 88 


2 42 




3 30 1 11 


3 34 


02 2 16 


4 73 


1 13 




98 




1931... 


. . .73 


1.58 


3.26 


2 . 20 2 . 63 


1 76 


3 68 2.05 


2.95 


2.91 


5.65 






1932 




1.07 


1.39 


2 . 64 .93 


3.82 


1.88 6.41 


7.33 


3.96 


3.08 


4.39 




1933 


. . 3.47 


1.78 


5.83 


4.70 11.73 


.64 


.83 2.16 


4.11 


2.92 


.85 


2.08 


40.10 


1934 


. . 1.44 


.93 


2.89 


1.52 1.73 


3.51 


5.43 2.75 


6.72 


.64 


3.56 


2.75 


33.87 


1935 


. . 3.36 


.41 


6.84 


2.14 9.57 


6.24 


1.48 3.01 


3.72 


5.59 


4.26 


1.04 


47.66 


1936... 


.1.15 


1.90 


2.29 


3.61 1.09 


1.39 


2.40 1.53 


3.78 


5.04 


3.98 


2.60 


30.76 


1937 


. . 9.97 


1.59 


1.62 


5.52 4.10 


3.96 


3.16 3.74 


2.04 


7.30 


.97 


3.88 


47.85 


1938 


. . 1.68 


1.94 


6.81 


2.22 6.45 


8.67 


6.07 6.17 


2.47 


1.38 


4.87 


1.72 


50.45 


1939 


. . 4.83 


2.94 


2.48 


5.72 1.35 


6.89 


5.94 2.35 


.83 


1.92 


1.40 


1.70 


38.35 


1940 


. . 1 . 53 


2.44 


1.47 


5.45 3.62 


3.46 


1.68 2.27 


1.33 


1.34 


3.50 


2.55 


30.64 


1941... 


88 


.63 


.65 


2.74 2.56 


5.15 


2.58 1.35 


3.11 


5.47 


3.39 


2.72 


31.23 


1942 


. 1.49 


2.70 


5.31 


3.29 4.70 


7.97 


6.61 5.29 


2.31 


1.85 


5.28 


1.87 


48.67 


1943 


. . 1.12 


1.53 


2.19 


2.50 10.25 


1.63 


2.01 .24 


4.23 


1.61 


2.56 


2.15 


33.02 


1944 


. . .55 


3.18 


2.87 


8.31 2.03 


2.71 


.68 6.38 


.94 


1.87 


2.39 


1.43 


33.34 


1945 


. . 1.48 


3 70 


10.06 


6.28 4.21 


10.23 


3.31 3.70 


8.38 


1.55 


3.35 


2.64 


58.89 


1946 


. . 1.99 


3.12 


1.32 


2.49 8.92 


4.32 


2.25 4.49 


1.95 


3.57 


5.79 


3.10 


43.31 


Aver 


. . 2 . 95 


2.47 


3.95 


3.68 4.22 


4.06 


3 . 29 3 . 60 


3.40 


2.87 


3.24 


2.87 


40.60 










PANA, 


Christian county 


1882 












3 68 


15 


2 00 


2 75 


1.50 




1883 


. 1.28 


4.50 


1.00 


2.00 4.31 


3.15 


5.75 1.50 


.75 


8.00 


3.72 


.82 


36.78 


1884 


. . 1.06 


4.00 


1.50 


2.58 2.25 


3.49 


4.00 1.25 


7.33 


2.50 


2.00 


4.88 


36.84 


1885 


. . 2.60 


.88 


.18 


5.11 5.41 


10.50 


6.61 3.59 


7.00 


5.33 


1.33 


1.65 


50.19 


1886... 


. 1.68 


2.35 


2.28 


3.07 5.50 


5.58 


1.50 7.16 


8.74 


.16 


3.39 


1.67 


43.08 


1887 


. . .65 


6.08 


3.41 


5.68 6.50 


1.66 


3.05 5.35 


5.08 


1.33 


7.58 


6.41 


52.78 


1888 


. . 3.08 


3.74 


6.08 


3.50 6.08 


8.74 


5.73 6.66 


1.66 


5.83 


6.25 


5.58 


62.93 


1889 


. . 2.73 


2.05 


3.25 


1.25 6.83 


4.68 


2.24 .08 


4.57 


2.75 


8.16 


4.33 


42.92 


1890 


..11.65 


2.01 


6.08 


3.04 3.57 


5.25 


3.33 3.66 


4.66 


1.16 


3.50 


1.12 


49.03 


1891 


. . .56 


2.64 


4.32 


4.16 .66 


6 25 


6 50 


1 00 


2 26 


10 09 


1.79 




1892 


. . 2.11 


5.61 


3.32 


11.99 8.57 


2.76 


6.49 6.07 


3.25 


1.57 


7.25 


4.33 


63.32 


1893 . . 


. . .48 


4 60 


3 77 


1 60 


2 99 


2 49 30 


2 74 


28 










* 




* 


* * 






* 


* 


* 


, 


, 


1898... 








.... 6 . 49 


2.31 


2.34 3.17 


3 90 


4.85 


2.48 


1.33 




1899 


. . 2.00 


1.91 


3.44 


1.38 6.84 


4.01 


1.44 2.44 


1.35 


3.97 


1.72 


3.00 


33.50 


1900 


. . .51 


5.31 


1.66 


1.32 2.30 


6.17 


5.49 1.98 


3.36 


2.00 


3.63 


1.21 


34.94 


1901... 


.1.64 


1.92 


3.71 


2.19 3.61 


3.94 


1.08 2.66 


1.73 


2.64 


1.70 


3.16 


29.98 


1902 


. . 1.47 


.96 


3.83 


2.94 1.71 


10.43 


1.48 5.51 


4.01 


2.32 


3.16 


3.68 


41.50 


1903 


. . 1.43 


4.15 


2.84 


3.66 1.95 


3.25 


3.53 4.83 


2.41 


2.24 


.42 


1.99 


32.70 


1904 


. . 2.85 


1.19 


7.86 


4.48 2.00 


3.50 


6.39 4.20 


4.26 


.54 


.10 


1.34 


38.71 


1905 


. . 2.16 


1.17 


1.49 


2.31 3.65 


2.29 


6.88 1.66 


3.32 


5.45 


1.95 


2.27 


33.60 



256 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PANA, Christian county, concluded 


1906 


. 2.78 


2.33 


4.75 


3.94 2.46 


3.87 


.89 3.18 


7.18 


1.03 


4.86 


2.99 


40.26 


1907 


. 6.18 


.66 


2.61 


3.02 3.78 


4.85 


5.93 5.91 


1.01 


1.95 


1.95 


3.97 


41.82 


1908 


. 1.97 


5.87 


2.37 


5.42 10.21 


2.38 


2.48 1.60 


1.05 


.13 


3.09 


1.55 


38.12 


1909 


. 2.72 


5.05 


1.68 


6.25 3.96 


3.71 


8.82 1.74 


3.73 


3.20 


4.48 


2.53 


47.87 


1910 


. 1.90 


2.33 


.40 


3.49 6.06 


2.52 


4.30 6.71 


5.95 


2.11 


1.96 


1.05 


38.78 


1911 


. 2.93 


2.87 


1.91 


5.14> 1.12 


4.63 


1.55 4.65 


10.87 


2.61 


2.59 


2.03 


42.90 


1912 


. 1.24 


1.87 


4.78 


5.10 3.65 


3.14 


3.69 2.29 


.80 


2.84 


1.85 


.99 


32.24 


1913 




1.46 


6.46 


79 


1.94 


1.48 




4.19 


4.40 


.42 




1914 


. 2.15 




.63 


2.14 .70 


1.21 


2.34 2.37 


3.73 


2.46 


1.16 


2.02 




1915 


. 2.33 


2.53 


.77 


3.01 8.20 


6.80 


4.58 11.23 


2.12 


.66 


1.15 


3.90 


47.28 


1916... 


. 8.36 


1.12 


1.22 


1.44 3.14 


6.47 


1.58 1.62 


2.13 


2.66 


2.13 


2.59 


34.46 


1917 


. 1.45 


.95 


2.36 


3.97 5.77 


6.23 


1.83 6.07 


2.81 


3.52 


.25 


.86 


36.07 


1918 


. 2.09 


1.99 


.46 


6.23 6.86 


3.75 


2.81 5.80 


6.74 


3.86 


2.03 


3.04 


45.66 


1919 


. .37 


1.75 


2.65 


1.50 4.97 


4.83 


1.54 2.23 


3.67 


8.75 


3.47 


.60 


36.33 


1920 


. 1.16 


1.62 


5.37 


1.81 5.84 


1.95 


1.71 3.39 


3.48 


1.11 


.50 


2.65 


30.59 


1921... 


. 1.30 


.79 


5.73 


4.47 1.95 


4.89 


3.41 6.98 




1.88 


4.58 


2.87 




1922 


. 1.33 


1.09 


7.18 


8.32 3.45 


1.55 


4.00 2.07 


.55 


2.45 


2.49 


3.72 


38.20 


1923 


.1.55 


1.22 


5.33 


2.89 3.34 


3.09 


2.17 3.47 


5.43 


4.08 


1.99 


4.94 


39.50 


1924 


. 2.44 


1.72 


2.55 


1.55 3.76 


6 39 


4.39 3.07 


3.45 


.98 


1.50 


4.81 


36.61 


1925 


. .40 


1.62 


4.22 


1.81 1 . 56 


5.56 


3.61 3.27 


2.14 


2.95 


3.22 


1.24 


31.60 


1926 


. 1.39 


2.88 


2.48 


2.80 1.99 


4.06 


1.57 2.18 


10.69 


5.70 


2.91 


1.45 


40.10 


1927 


. 2.40 


.77 


5.06 


7.90 10.71 


3.83 


3.05 4.46 


5.25 


5.04 


6.21 


2.60 


57.28 


1928 


. 1.70 


2.62 


1.97 


2.67 3.91 


7.95 


3 . 34 1 . 64 


2.38 


4.62 


1.57 


2.59 


36.96 


1929 


. 3.17 


.70 


3.97 


4.93 9.38 


4.34 


7.39 2.48 


1.41 


3.82 


.86 


3.62 


46.07 


1930 


. 6.07 


1.31 


1.58 


2.13 1.29 


3.65 


1 . 23 .93 


2.39 


1.90 


2.14 


.44 


25.06 


1931... 


.20 


1.40 


2.20 


3.75 2.73 


2.11 


2.18 3.42 


4.09 


4.12 


2.89 


2.88 


31.97 


1932 


. 3.28 


2.35 


.72 


1.94 2.22 


6.66 


2.87 8.37 


1.22 


3.84 


1.64 


3.29 


38.40 


1933 


. 2.43 


1.23 


3.03 


3.48 10.27 


1.69 


.74 4.66 


3.44 


3.70 


.65 


1.28 


36.60 


1934 


. 1.47 


1.08 


1.71 


1.16 .64 


2.59 


2.96 6.55 


4.97 


1.59 


3.55 


1.81 


30.08 


1935 


. 1.20 


1.32 


4.23 


2.05 7.68 


2.52 


3.56 .45 


3.87 


2.55 


3.54 


1.31 


34.28 


1936 


. 2.02 


1.77 


2.23 


2.89 1.03 


1.24 


.39 3.45 


4.77 


3.38 


2.78 


3.13 


29.08 


1937 


. 5.22 


1.35 


.91 


4.60 2.77 


5.40 


4.98 2.89 


2.86 


5.61 


1.97 


1.91 


40.47 


1938 


. 1.27 


2.46 


8.64 


2.98 4.58 


3.38 


1.93 3.67 


1.78 


1.22 


2.09 


2.30 


36.30 


1939 


. 3.70 


3.69 


2.98 


4.35 1.17 


4.89 


1.37 11.72 


.86 


.62 


1.58 


1.62 


38.55 


1940 


. .73 


1.37 


1.26 


3.38 3.88 


3.83 


1.79 3.70 


.11 


1.21 


2.62 


2.24 


26.12 


1941... 


. 2.12 


.80 


.68 


5.52 2.20 


4.52 


3.11 3.20 


7.73 


9.06 


3.37 


.98 


43.29 


1942 


. 1.41 


2.57 


2.30 


2.25 4.85 


7.34 


6.28 2.12 


3.24 


2.54 


6.08 


2.75 


43.73 


1943 


. .66 


.88 


3.04 


2.86 10,56 


3.25 


2.45 .55 


1.70 


1.78 


1.89 


1.21 


30.83 


1944 


. .08 


2.66 


2.71 


7.75 8.21 


.97 


2.57 4.18 


3.51 


.74 


2.12 


1.20 


36.70 


1945 


. .50 


2.01 


7.51 


4.47 3.84 


7.88 


1.03 5.38 


7.86 


2.07 


2.84 


2.28 


47.67 


1946 


. 1.76 


2.61 


3.17 


2.51 7.89 


4.23 


1.92 9.51 


1.93 


2.77 


5.48 


2.48 


46.26 


Aver 


.2.20 


2.27 


3.15 


3.66 4.39 


4.28 


3.21 3.92 


3.61 


2.93 


2.99 


2.40 


39 01 










PARIS, 


Edgar county 


1887 


. 1.40 


4.19 


2.40 


2.78 5.03 


34 


.81 3.40 


3.74 


.72 


6.47 


4.39 


35.67 


1888 


. 2.75 


2.10 


3.52 


2.52 4.35 


4.62 


2.94 4.09 


2.44 


2.66 


4.78 


2.32 


39 09 


1892 




1 31 


09 


7 50 10 70 


4 50 


3 50 












1893 








6.26 4.70 


4.24 


1.19 .38 


3.24 


1.41 


3.10 


1.69 




1894 


. 2.95 


2.64 


3.80 


2.17 3.31 


1.78 


1.74 2.00 


3.78 


.69 


3.45 


1.51 


29.82 


1895 


. 1.71 


1.12 


.91 


3.87 .88 


2.21 


2.95 1.65 


2.46 


.28 


4.84 


3.05 


25.93 


1896 








1 28 5 92 


5 45 


8 39 5.41 


5.94 




1.96 






1897 






2.99 


4.63 2.04 


5.60 


2.70 .53 


.38 


.25 


6.41 


2.93 




1898 


. 4.29 


1.69 


8.34 


2.41 3.05 


3.84 


1.67 3.31 


4.71 


3.73 


2.30 


1.37 


40.71 


1899 


. 2.97 


2.22 


2.73 


.90 4.90 


2.04 


3.99 3.09 


.92 




3.59 


2.83 




1900 


. .80 




1.63 


2.05 2.17 


6.37 


4.35 4.75 


3.13 


4.04 


3.64 


.98 




1901... 


. 1.48 


1.65 


3.87 


2.82 2.78 


7.43 


2.07 2.53 


1.56 


3.61 


2.19 


3.54 


35.53 


1902 


. .87 


1.20 


2.93 


1.56 4.97 


9.04 


4.26 4.71 


3.31 


2.11 


4.22 


3.89 


43.07 


1903 


.1.10 


2.45 


2.73 


4.54 1.21 


1.10 


3.43 3.48 


.71 


2.24 


.56 


.29 


23.84 


1904 


. 1.25 






2.97 3.58 


2.32 


1.57 3.20 


4.64 


1.01 


.30 


2.26 




1905 


. 1.26 


2.03 


1.98 


3.75 4.91 


.45 


5.31 3.43 


4.36 


3.73 


2.39 


2.42 


36.02 



1949] CLIMATE OF ILLINOIS: APPENDIX B 257 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PARIS, Edgar county, 


concluded 


1906 


. 4.99 


.65 


5.30 


1.57 1.03 2.54 


2.95 


3.27 


3.93 


.42 


3.80 


3.29 


33.74 


1907 


5 26 


.07 


3.05 


2.50 2.53 .... 






.70 


2.79 


3.47 


3.10 




1908 


.1.53 


5.11 


4.64 


5.57 9.27 2.48 


2.75 


.80 


1.79 


.20 


3.05 


1.12 


38.31 


1909 


. 2.76 


5.18 


2.40 


6.67 3.78 4.66 


4.96 


1.18 


3.14 


3.25 


3.24 


2.92 


44.14 


1910 


. 2.60 


2.82 


.23 


3.59 4.13 3.00 


5.30 


1.63 


4.66 


3.90 


2.65 


1.25 


35.76 


1911 


. 3.50 


2.16 


2.41 


5.74 1.45 3.93 


1.79 


2.28 


11.43 


2.57 


3.00 


1.90 


42.16 


1912 


. 1.09 


1.22 


4.24 


5.19 4.59 2.46 


8.56 


5.81 


2.65 


1.01 


2.15 


.68 


39.65 


1913 


. 7.42 


1.39 


7.09 


2.46 2.31 .95 


2.92 


2.06 


3.62 


4.33 


4.03 


1.49 


40.07 


1914 


. 1.23 


2.67 


1.85 


2.61 1.40 2.18 


3.11 


3.59 


2.73 


3.10 


1.74 


1.82 


28.03 


1915 


.1.51 


1.12 


.78 


1.13 6.38 1.75 


6.89 


6.62 


4.71 


1.87 


2.84 


1.66 


37.26 


1916 


. 6.58 


.63 


2.54 


1.15 5.19 7.21 


3.04 


2.18 


1.72 


1.36 


1.77 


3.52 


36.89 


1917 


. .97 


.87 


3.73 


3.08 7.96 6.77 


3.58 


3.18 


3.73 


5.67 


.13 


1.11 


40.78 


1918 


. 3.22 


.81 


1.34 


6.85 3.67 4.99 


1.96 


3.02 


6.52 


2.28 


2.52 


5.32 


42.50 


1919 


. .72 


1.80 


7.01 


1.69 5.41 3.71 


.62 


2.41 


3.68 


8.43 


2.90 


.14 


38.52 


1920 




1.15 


4 23 


3 61 4.29 3 04 


2 60 


1.12 


2 73 


3 42 


1 20 


3 67 




1921... 


. 2.42 


.60 


5.36 


3.35 2.73 3.72 


2.16 


6.93 






4.11 


4.09 




1922 


. 1.02 


1.02 


9.62 


9.93 1.95 


4.47 


1.38 












1923 


. 2.12 


1.30 


4.81 


3.57 4.79 2.77 


3.81 


7.64 


3.20 


4.02 


1.89 


3.67 


43.59 


1924 


.2.60 


1.91 


2.78 


.... 5 . 49 1 . 94 


.65 


7.80 


3.47 


.54 


1.55 


6 42 




1925 


. .44 


.92 


5.89 


1.02 .85 10.43 


3.03 


3.93 


4.34 


2.77 


3.47 


1.34 


38.43 


1926... 


. 1.92 


3.56 


2.31 


3.53 3.64 2.17 


2.22 


2.88 


9.87 


3.94 


2.18 


1.33 


39.55 


1927 


. 1.90 


1.17 


4.94 


6.68 6.17 4.27 


3.35 


4.42 


4.84 


3.57 


4.78 


2.81 


48.90 


1928 


.1.64 


4.26 


1.62 


2.31 3.63 6.95 


2.50 


3.70 


2.13 


3.40 


2.25 


2.18 


36.57 


1929 


. 3.52 


.70 


3.51 


6.22 8.85 4.40 


3.34 


.59 


2.96 


3.76 


2.76 


4.25 


44.86 


1930 


. 7.56 


1.93 


.99 


2.80 1.10 2.71 


1.10 


2.31 


4.20 


1.95 


1.87 


.35 


28.87 


1931... 


. 1.08 


1.69 


2.99 


2.72 3.59 4.08 


2.27 


4.22 


9.54 


3.98 


4.19 


3.32 


43.67 


1932 


. 3.67 


1.34 


1.52 


1.20 1.78 4.11 


1.97 


3.28 


1.42 


3.05 


3.25 


3.75 


30.34 


1933 


. 2.94 


1.99 


4.56 


2.92 8.63 .90 


1.18 


2.94 


3.31 


2.53 


.74 


2.23 


34.87 


1934 


. 2.30 


.92 


3.65 


2.09 .87 2.39 


4.97 


5.15 


6.77 


.63 


6.36 


2.05 


38.15 


1935 


. 3.18 


.59 


3.24 


1.43 9.63 4.29 


3.24 


2.90 


2.65 


1.84 


3.79 


1.57 


38.35 


1936 


. 1.49 


2.04 


2.41 


4.53 1.93 .36 


3.49 


.92 


3.98 


3.92 


2.55 


3.10 


30.72 


1937 


. 6.94 


1.74 


1.88 


4.72 2.83 5.96 


2.88 


1.95 


2.73 


6.47 


1.76 


2.42 


42.28 


1938 


. 1.26 


2.23 


8.79 


3.45 5.13 7.56 


6.17 


6.10 


.89 


1.17 


2.23 


1.85 


46.83 


1939 


. 4.75 


3.45 


3.86 


5.94 1.08 7.01 


3.87 


5.83 


.80 


2.30 


1.39 


1.24 


41.52 


1940 


. 1.48 


1.07 


1.89 


4.70 5.74 2.93 


2.06 


2.20 


1.23 


1.91 


3.79 


2.61 


31.61 


1941 . . . 


. 1.39 


.81 


.72 


4.25 2.03 10.49 


1.63 


1.74 


4.12 


7.43 


4.64 


1.50 


40.75 


1942 


. 1.01 


3.70 


3.67 


2.83 4.69 7.06 


5.02 


.82 


1.80 


2.07 


4.69 


2.08 


39.44 


1943 


. .98 


.82 


3.07 


2.29 13.50 3.65 


2.29 


1.50 


4.07 


2.15 


2.88 


1.57 


38.77 


1944 


. .32 


2.31 


3.02 


7.24 5.95 1.51 


1.82 


3.82 


2.20 


.73 


2.00 


1.63 


32.55 


1945 


. .67 


2.02 


7.41 


4.20 4.11 8.75 


1.41 


4.21 


5.87 


2.71 


3.37 


1.37 


46.13 


1946 


.1.83 


3.61 


1.37 


1.50 9.06 3.82 


1.71 


2.68 


2.04 


2.44 


3.93 


2.36 


36.35 


Aver 


. 2 44 


1.88 


3.42 


3.59 4.34 4.10 


3.13 


3.22 


3.55 


2.70 


3.00 


2.36 


37.73 


PEORIA, Peoria county 


1856... 


.80 


1.03 


.25 


.86 4.08 1.50 


2.83 


1.39 


.78 


1.66 


4.00 


6.13 


25.31 


1857 


. .37 


5.33 


3.84 


1.39 2.80 2.77 


1.40 


5.61 


2.16 


2.01 


1.35 


1.50 


30.53 


1858 


. 1.48 


1.95 


3.28 


6.25 10.64 5.95 


5.75 


3.24 


2.96 


3.24 


4.85 


3.67 


53.26 


1859 


.1.50 


1.42 


5.83 


2.60 3.17 2.18 


.67 


4.14 


2.84 


2.15 


2.40 


1.23 


30.13 


1860 


. 1.86 


2.40 


1.13 


1.64 2.00 4.95 


8.87 


2.39 


2.11 


.70 


3.13 


3.08 


34.26 


1861... 


. 1.25 


2.46 


3.96 


4.95 2.19 2.31 


2.31 


2.78 


3.72 


2.33 


1.09 


.94 


30.29 


1862 


. 4.27 


.70 


2.71 


5.03 1.46 3.67 


7.74 


9.04 


5.09 


1.61 


1.81 


5.20 


48.33 


1863 


. 2.83 


3.20 


2.60 


1.52 2.97 .45 


4.82 


2.24 


2.51 


3.92 


.71 


4.49 


32.26 


1864 


. 1.42 


.41 


2.20 


4.81 1.88 2.55 


2.92 


1.56 


4.71 


1.53 


3.82 


3.06 


30.87 


1865 


. .22 


4.01 


3.57 


4.27 2.34 1.86 


5.77 


3.61 


8.31 


1.67 


.31 


1.06 


37.00 


1866... 


. 3.21 


1.10 


2.54 


2.65 2.57 2.61 


5.17 


3.97 


6.50 


2.87 


.51 


2.05 


35.75 


1867 


. 1.36 


2.88 


1.74 


1.57 4.40 2.92 


2.65 


2.26 


.60 


1.10 


1.93 


1.21 


24.62 


1868 


. .77 


.75 


5.38 


3.18 7. 85 1.43 


1.47 


2.74 


4.46 


1.41 


4.50 


1.81 


35.75 


1869 


. .99 


2.62 


1.71 


3.59 6.09 8.35 


7.35 


3.39 


.74 


1.53 


3.13 


2.63 


42.12 


1870 


. 2.05 


.33 


4.37 


.45 1.62 .75 


.68 


3.26 


3.56 


4.27 


1.21 


1.12 


23.67 


1871... 


. 2.45 


1.62 


3.24 


2.58 1.93 3.47 


4.03 


4.95 


.65 


3.37 


2.09 


2.04 


32.42 


1872 


. .20 


.69 


2.53 


2.95 2.38 9.76 


7.80 


4.54 


4.13 


.80 


2.00 


1.07 


38.85 


1873 


. 3.47 


1.29 


1.30 


4.76 4.78 2.96 


4.25 


1.25 


3.65 


2.26 


1.46 


7.15 


38.58 


1874 


. 3.04 


1.45 


1.11 


2.90 2.51 1.95 


1.46 


5.60 


1.15 


1.00 


2.20 


.67 


25.04 


1875 


.32 


2.20 


2.05 


2.00 4.23 3.00 


8.28 


1.02 


9.61 


3.46 


.71 


2.39 


39.27 



258 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, Peoria county, continued 


1876 


. 2.63 


2.00 


4.70 


2.66 


3.94 6.17 


5.54 


3.14 4.51 


4.86 


2.63 


.28 


43.06 


1877 


. .92 


.06 


3.32 


2.86 


2.57 9.43 


3.01 


2.04 2.83 


5.68 


3.65 


3.45 


39.82 


1878 


. .50 


2.25 


2.10 


3 75 


4.45 3.94 


2.58 


4.42 .97 


3.96 


.91 


2.08 


31.91 


1879 


. 1.05 


.97 


1.80 


2.95 


.93 3.23 


3.42 


1.88 3.72 


2.17 


4.93 


1.92 


28.97 


1880 


. 3.38 


3.95 


3.30 


5.94 


6.73 2.32 


3.17 


3.38 3.09 


1.75 


1.92 


.96 


39.89 


1881 . . . 


.52 


3.51 


3.52 


1.62 


'3.60 7.20 


2.43 


1.38 4.05 


5.56 


4.26 


3.50 


41.15 


1882 


. 1.27 


3.21 


3.12 


2.41 


6.34 11.18 


2.91 


1.92 1.43 


3.76 


2.08 


1.76 


41.39 


1883 


. 1.31 


4.14 


.77 


6.18 


6.54 4.39 


3.57 


.57 2.93 


3.57 


4.19 


1.37 


39.53 


1884 


. .70 


3.18 


2.17 


2.62 


5.50 3.87 


3.67 


4.13 5.76 


4.80 


2.19 


3.21 


41.80 


1885 


. 2.63 


2.24 


.87 


4.44 


1.70 4.07 


3.73 


2.64 5.28 


2.32 


1.04 


2.44 


33.40 


1886... 


. 2.41 


1.86 


2.25 


2.75 


2.90 3.67 


.47 


3.30 4.68 


1.81 


1.34 


.89 


28.33 


1887 


. 1.10 


5.45 


.94 


1.53 


1 . 24 1 . 53 


2.85 


2.72 2.53 


2.14 


1.62 


3.65 


27.30 


1888 


. 1.87 


1.66 


4.03 


1.18 


6.72 1.84 


6.48 


2.30 4.79 


2.29 


2.67 


2.39 


38.22 


1889 


.1.70 


.84 


1.50 


2.79 


3.92 6.48 


7.64 


1.23 2.61 


2.28 


2.91 


1.33 


35.23 


1890 


. 2.80 


1.36 


2.73 


91 33 


2.74 2.42 


.72 


2.39 2.12 


3.45 


1.79 


.41 


25.26 


1891... 


. 1.69 


1.90 


2.68 


3.64 


1.97 3.31 


2.82 


5.71 2.00 


.71 


4.08 


2.40 


32.91 


1892 


.1.25 


1.78 


2.45 


4.54 


7.70 6.05 


3.08 


.73 2.35 


1.20 


2.72 


1.75 


35.60 


1893 


.1.15 


2.92 


3.01 


7.86 


4.65 1.82 


2.48 


.44 3. 02 


.70 


2.21 


1.74 


32.00 


1894 


.2.60 


1.48 


3.06 


2.22 


3.58 4.18 


1.00 


2.50 4.42 


1.45 


2.92 


1.58 


30.99 


1895 


. 1.32 


.37 


1.02 


2.89 


1.84 1.67 


8.72 


2.27 4.92 


.67 


4.17 


5.86 


35.72 


1896 


. 1.30 


1.95 


1.05 


4.47 


5.74 2.23 


7.02 


4.69 4.86 


.23 


2.20 


.40 


36.14 


1897 


. 5.39 


1.19 


4.70 


2.87 


1.29 2.11 


4.65 


1.02 .93 


.04 


3.48 


1.16 


28.83 


1898 


. 4.08 


2.59 


5.74 


3.02 


5.54 3.37 


.47 


3.26 6.05 


3.00 


2.03 


.93 


40.08 


1899 


. .72 


1.96 


2.97 


1.36 


6.03 2.60 


1.69 


1.27 5.24 


2.78 


2.25 


2.12 


30.99 


1900 


. 1.92 


5.64 


1.42 


1.09 


5.54 1.44 


2.45 


5.39 2.94 


2.90 


1.87 


.39 


32.99 


1901... 


. 1.98 


1.24 


4.31 


.81 


1.50 4.32 


3.97 


1.29 2.64 


.90 


.80 


2.26 


26.02 


1902 


. .62 


1.41 


2.71 


2.29 


2.99 9.60 


7.30 


7.42 6.84 


3.78 


2.83 


1.54 


49.33 


1903 


. .89 


1.70 


3.66 


5.15 


4.22 2.39 


4.91 


7.22 5.78 


2.13 


.85 


.95 


39.85 


1904 


.1.87 


1.29 


4.42 


3.48 


4.06 2.44 


5.58 


4.13 6.67 


.10 


.12 


1.33 


35.49 


1905 


. 1.15 


1.45 


2.00 


3.99 


4.53 5.13 


4.24 


1.36 1.78 


2.77 


2.45 


1.60 


32.45 


1906... 


. 1.70 


1.85 


2.55 


2.77 


2.88 3.24 


2.48 


1.59 4.92 


1.00 


2.42 


1.65 


29.05 


1907 


. 5.39 


.14 


2.34 


2.82 


2.08 3.99 


4.89 


6.60 2.94 


.35 


1.68 


1.66 


34.88 


1908 


. .59 


3.98 


2.50 


4.08 


7.76 4.09 


3.94 


2.78 .82 


.71 


1.89 


.82 


33.96 


1909 


. 1.55 


3.67 


1.81 


7.17 


3.72 3.56 


4.57 


.79 3.68 


3.59 


5.53 


2.50 


42.14 


1910 


. 1.97 


1.10 


.52 


3.56 


4.49 .78 


3.23 


.68 3.12 


1.69 


.79 


1.25 


23.18 


1911... 


. 2.37 


2.39 


2.64 


2.69 


1.03 6.64 


2.58 


1.73 12.30 


2.65 


3.01 


2.13 


42.16 


1912 


. .35 


1.21 


2.03 


6.88 


4.39 1.86 


5.04 


1.67 3.54 


4.03 


1.56 


1.13 


33.69 


1913 


. 2.18 


3.00 


3.46 


3.54 


1.85 2.50 


.46 


2.87 2.58 


3.11 


2.77 


.74 


29.06 


1914 


. 1.93 


1.36 


1.60 


2.10 


2.28 2.45 


.82 


2.40 5.55 


2.15 


.20 


1.81 


24.65 


1915 


. 1.89 


2.71 


.67 


1.60 


11.49 2.08 


6.91 


4.78 4.88 


.55 


2.29 


1.66 


41.51 


1916... 


. 5.95 


.29 


2.33 


1.60 


7.51 2.55 


1.14 


6.03 3.73 


2.93 


1.88 


1.75 


37.69 


1917 


.1.86 


.27 


2.26 


4.54 


2.40 7.43 


1.92 


3.36 3.14 


2.23 


.07 


.63 


30.11 


1918 


.1.58 


1.64 


.91 


3.70 


3.02 4.69 


3.46 


5.88 1.67 


2.97 


3.18 


2.80 


35.50 


1919 


. .07 


2.32 


4.52 


2.35 


3.79 3.96 


3.09 


4.73 3.48 


2.12 


2.91 


.30 


33.64 


1920 


. .93 


.27 


5.84 


6.12 


3.03 2.18 


1.56 


1.87 1.84 


1.93 


1.22 


1.87 


28.66 


1921... 


. 1.39 


.29 


4.89 


6.36 


2.13 2.17 


3.95 


3.86 4.86 


2.97 


3.43 


2.91 


39.21 


1922 


.1.69 


1.98 


5.09 


3.62 


4.60 .99 


3.06 


.72 2.71 


2.02 


3.67 


1.38 


31.53 


1923 


.1.10 


.83 


4.08 


1.95 


5.15 2.09 


1.35 


2.84 5.28 


3.85 


1.37 


2.21 


32.10 


1924 


. 1.72 


1.64 


2.28 


2.13 


1.91 8.08 


5.59 


7.15 3.74 


1.27 


.52 


2.40 


38.43 


1925 


. .48 


1.99 


1.58 


1.68 


1.53 3.15 


3.93 


4.27 4.99 


2.49 


2.70 


1.12 


29.91 


1926... 


. 1.39 


2.42 


2.35 


2.60 


2.18 5.63 


5.94 


6.79 11.55 


2.62 


5.41 


1.12 


50.00 


1927 


. 1.76 


2.85 


4.55 


4.87 


9.22 5.71 


4.94 


1.45 5.82 


4.20 


3.38 


2.91 


51.66 


1928 


. .36 


1.73 


.96 


2.84 


3.21 6.60 


4.35 


3.62 3.18 


3.66 


3.97 


2.53 


37.01 


1929 


. 3.98 


.58 


4.57 


4.56 


5.03 4.44 


5.76 


3.02 1.04 


3.89 


1.72 


1.07 


39.66 


1930 


. 2.81 


2.10 


1.55 


3.58 


1.07 2.53 


1.02 


1.56 1.31 


3.14 


3.07 


.29 


24.03 


1931... 


.48 


.83 


2.50 


2.23 


5.14 2.29 


5.91 


2.49 4.92 


3.15 


5.55 


2.26 


37.75 


1932 


. 2.51 


1.40 


2.51 


1.99 


3.61 4.75 


3.41 


3.14 1.78 


3.18 


.94 


4.46 


33.68 


1933 


.1.69 


1.33 


4.70 


3.05 


7.97 1.15 


1.93 


2.66 5.92 


2.23 


.26 


1.18 


34.07 


1934 


. 1.05 


.77 


1.76 


1.13 


.47 2.82 


5.44 


2.30 6.57 


1.97 


4.81 


1.34 


30.43 


1935 


. 1.93 


2.83 


3.32 


2.91 


8.58 6.62 


2.64 


.98 3.33 


1.59 


4.03 


1.39 


40.15 


1936... 


. . 1.79 


1.63 


1.80 


1.64 


1.72 .45 


1.24 


2.27 10.58 


3.35 


1.18 


3.26 


30.91 


1937 


. 2.86 


2.46 


1.02 


4.42 


3.22 4.87 


2.32 


1 . 55 1 . 14 


2.69 


1.28 


2.06 


29.89 


1938 


. 4.32 


2.21 


4.42 


3.80 


5.72 6.76 


6.34 


3.01 2.12 


.84 


1.65 


1.43 


42.62 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



259 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PEORIA, Peoria county, 


concluded 


1939 


. 3.40 


2.88 


3.24 


5.16 4.48 


5.53 4.80 


2.38 


.85 


3.80 


1.14 


.61 


38.27 


1940 


. .84 


.86 


2.10 


3.85 3.55 


3.30 .50 


3.29 


1.16 


3.13 


1.89 


1.67 


24.16 


1941 


.3.56 


1.01 


1.86 


4.40 5.64 


3.16 1.89 


2.07 


4.87 


10.53 


2.02 


1.38 


42.39 


1942 


. 1.22 


4.95 


2.58 


3.51 3.28 


4.84 3.88 


2.13 


3.34 


.96 


4.72 


2.45 


37.86 


1943 


.1.84 


.99 


2.28 


5.38 7.35 


3.49 2.56 


4.63 


.88 


1.60 


1.23 


.58 


32.81 


1944 


. .57 


1.74 


5.92 


8.32 4.12 


2.72 1.73 


2.86 


4.49 


1.23 


1.33 


.90 


35.93 


1945 


. .49 


1.24 


3.90 


5.58 4.90 


5.66 .57 


1.11 


7.36 


.74 


2.19 


2.39 


36.13 


1946 


. 2.63 


.58 


4.22 


1.55 5.06 


7.41 .79 


3.40 


2.32 


3.88 


5.29 


1.76 


38.89 


Aver 


. 1.81 


1.91 


2.79 


3.34 4.02 


3.84 3.63 


3.06 


3.81 


2.46 


2.38 


1.96 


35.01 


QUINCY, Adams county 


1906... 


.1.33 


2.08 


2.98 


2.60 2.66 


3.17 .43 


6.30 


4.10 


.66 


1.72 


1.85 


29.88 


1907 


. 5.11 


.26 


2.45 


1.59 1.60 


3.27 4.97 


4.34 


.84 


.99 


1.22 


2.35 


28.99 


1908 


. 1.03 


4.23 


.58 


2.17 5.89 


4.63 3.06 


1.76 


2.31 


.76 


3.82 


.47 


30.71 


1909 


.1.99 


3.40 


1.93 


5.24 6.55 


1.98 6.80 


.07 


3.72 


2.98 


1.57 


3.38 


39.61 


1910 


. 1.41 


.47 


.17 


2.40 4.58 


1.08 11.10 


.75 


5.17 


1.25 


.10 


.22 


28.70 


1911 


. 2.45 


2.55 


2.31 


3.55 1.76 


2.72 5.02 


1.29 


15.71 


1.76 


1.92 


2.63 


43.67 


1912 


. .29 


1.70 


2.13 


3.88 3.44 


2 . 53 .69 


3.97 


2.09 


3.69 


2.72 


.60 


27.73 


1913 


. 1.66 


2.73 


3.24 


3.12 2.90 


5.86 .79 


1.35 


1.85 


1.94 


1.94 


1.60 


28.98 


1914 


. .87 


2.32 


2.82 


2.93 .90 


1.36 2.19 


3.99 


5.15 


2.54 


T 


1.88 


26.95 


1915 


. 2.12 


1.96 


.98 


1.43 6.17 


8.56 8.51 


4.78 


7.78 


.54 


2.77 


2.57 


48.17 


1916 


. 6.56 


.50 


1.04 


1.79 8.92 


4.82 T 


6.01 


2.90 


1.91 


2.06 


.98 


37.49 


1917 


. .86 


.05 


3.04 


4.96 4.25 


9 . 23 1 . 68 


1.55 


3.21 


.86 


.06 


.68 


30.43 


1918 


. 1.22 


1.14 


.28 


4.00 5.39 


2.92 1.69 


3.03 


3.74 


2.29 


2.32 


2.02 


30.04 


1919 


. .28 


1.98 


1.44 


2.10 9.50 


5.09 2.21 


3.65 


3.70 


2.31 


2.98 


.22 


35.46 


1920 


. .85 


.26 


4.93 


5.18 4.93 


4.99 5.79 


.56 


4.77 


1.10 


1.21 


.90 


35.47 


1921 


. 1.76 


.41 


3.48 


5.20 2.58 


3.82 2.04 


3.64 


8.10 


1.52 


1.21 


1.30 


35.06 


1922 


. 1.32 


1.41 


4.49 


3.75 2.92 


.63 3.97 


2.68 


4.24 


1.17 


5.88 


.51 


32.97 


1923 


. .86 


.48 


4.08 


1.87 3.25 


4.56 1.22 


3.59 


6.24 


2.81 


1.34 


1.90 


32.20 


1924 


. 1.30 


1.50 


2.64 


1.57 3.85 


6.29 2.59 


3.41 


2.63 


2.80 


.65 


2.78 


32.01 


1925 


. .33 


1.90 


1.93 


2.73 2.32 


4.70 4.67 


5.89 


5.32 


3.82 


2.54 


2.04 


38.19 


1926 


.1.34 


1.98 


2.97 


3.19 2.08 


7.68 1.81 


5.83 


11.64 


3.36 


3.23 


.91 


46.02 


1927 


.1.58 


1.25 


4.29 


6.28 4.50 


4.83 3.50 


1.52 


2.98 


4.34 


2.56 


2.95 


40.58 


1928 


. .49 


1.93 


.88 


3.58 2.10 


5.44 1.08 


4.54 


3.22 


4.14 


5.62 


1.50 


34.52 


1929 


. 3.84 


.80 


5.19 


6.98 5.73 


5.42 6.14 


3.58 


3.00 


3.93 


1.60 


.75 


46.96 


1930 


. 3.31 


1.02 


1.46 


.79 2.70 


5.09 .39 


1.06 


1.85 


2.65 


4.43 


.62 


25.37 


1931 


. .35 


1.55 


3.28 


1.95 5.08 


7.88 4.28 


3.06 


7.51 


5.16 


3.37 


1.94 


45.41 


1932 


. 1.61 


1.11 


1.84 


1 . 53 1 . 57 


8.97 3.59 


8.78 


4.66 


2.20 


1.21 


4.36 


41.43 


1933 


. 2.68 


1.04 


2.42 


2.56 6.94 


3.24 1.72 


2.85 


2.07 


1.25 


.22 


1.63 


28.62 


1934 


. .85 


1.34 


2.40 


1.69 1.42 


1.87 .31 


2.52 


6.23 


2.16 


5.67 


1.31 


27.77 


1935 


. 2.14 


1.62 


2.68 


4.24 13.70 


5.71 5.96 


1.73 


2.86 


1.17 


4.97 


.92 


47.70 


1936 


. 1.52 


3.18 


.88 


1 . 25 2 . 39 


1.46 .45 


.77 


9.88 


2.78 


.99 


2.09 


27.64 


1937 


. 4.26 


1.10 


.59 


3.33 2.54 


2.09 5.48 


3.91 


1.68 


1.46 


1.18 


1.88 


29.50 


1938 


. 3.62 


2.23 


3.81 


3.64 6.36 


5.09 3.42 


5.14 


1.25 


2.11 


5.11 


2.30 


44.08 


1939 


. 1.40 


1.75 


3.29 


5.31 2.72 


5.24 2.01 


10.76 


.14 


1.32 


1.36 


1.18 


36.48 


1940 


. 1.81 


1.23 


2.56 


2.99 1.25 


3.89 .41 


5.90 


.34 


3.48 


2.44 


1.41 


27.71 


1941 


. 3.85 


.54 


.73 


3.85 1.42 


5.91 2.56 


2.96 


5.38 


10.34 


2.17 


1.60 


41.31 


1942 


. .53 


3.47 


1.80 


5.23 4.42 


6.53 3.35 


5.71 


3.80 


.97 


5.77 


3.19 


44.77 


1943 


. .89 


.78 


1.63 


2.70 8.17 


3.37 4.24 


6.40 


2.29 


2.73 


.80 


2.01 


36.01 


1944 


. .34 


1.88 


4.85 


7.97 2.84 


1.12 1.27 


5.65 


7.02 


3.45 


3.51 


1.35 


41.25 


1945 


. 1.27 


1.14 


6.32 


4.88 4.24 


8.55 .68 


1.12 


10.53 


1.02 


1.22 


1.87 


42.84 


1946 


. 2.59 


.61 


2.08 


3.66 6.42 


3.48 1.91 


6.51 


2.76 


5.53 


3.82 


1.90 


41.27 


Aver 


.1.80 


1.53 


2.51 


3.41 4.22 


4.51 3.02 


3.73 


4.50 


2.52 


2.42 


1.67 


35.84 


ROBERTS, Ford county 


1911... 










3 . 90 1 . 64 


1 59 


7 77 


3.75 




1 82 




1912 


.89 


1.21 


1.95 


4.82 3.36 


2.72 5.09 


3.50 


1.20 


3.19 


2.65 


.76 


31.34 


1913 


. 2.80 


.93 


6.47 


2.55 2.65 


2.49 1.66 


2.18 


1.79 


3.06 


2.29 


.84 


29.71 


1914 


. 1.41 


1.89 


1.64 


2.23 4.47 


1.89 .41 


3.52 


1.84 


1.30 


.55 


2.30 


23.45 


1915 


. 1.47 


2.15 


.79 


2.43 5.19 


3.06 8.68 


2.99 


5.28 


.23 


1.38 


1.73 


35.38 


1916 


. 4.98 


.75 


1.37 


.92 8.80 


3.94 1.45 


2.52 


2.50 


2.33 


2.06 


2.36 


33.98 


1917 


. 1.05 


.36 


2.37 


4.91 2.82 


7.55 3.09 


5.48 


1.87 


2.41 


.12 


.81 


32.84 


1918 


. 2.44 


1.75 


1.12 


5.10 4.18 


3.98 3.96 


2.51 


3.48 


3.24 


1.66 


4.33 


37.75 


1919 


. .14 


1.91 


2.47 


1.66 3.42 


3.74 2.41 


2.58 


1.99 


3.18 


2.82 


.14 


26.46 


1920 


.87 


.19 


3.28 


6.59 2.49 


.79 1.47 


1.18 


.95 


1.44 


1.05 


2.81 


23.11 



260 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ROBERTS, Ford county, concluded 


1921... 


.. 2.10 


.51 


3.37 


3.68 


1.33 


2.63 


1.82 3.99 7.39 


2.57 


3.61 


1.24 


34.24 


1922 


. . 1 . 28 


1.10 


5.77 


4.74 


4.59 


.85 


2.65 1.04 1.01 


4.17 


3.23 






1923 


.. 1.36 


.62 


3.66 


1.15 


5.62 


3.83 


2.21 4.01 2.60 


4.67 


1.63 


3.88 


35 . 24 


1924 


.. .70 


2.04 


2.72 


2.25 


1.57 


6.27 


1.23 6.76 2.22 


.93 


.61 


3.90 


31.20 


1925 


.. .60 


1.13 


2.94 


1.55 


.30 


2.68 


4.83 1.03 5.09 


2.89 


2.36 


.52 


25.92 


1926... 


.1.25 


2.45 


2.95 


3.27 


'3.69 


2.14 


8.12 4.56 12.01 


5.91 


3.75 


1.42 


51.52 


1927 


.. 1.41 


2.08 


3.73 


7.13 


8.44 


2.99 


3.02 2.02 5.45 


3.25 


5.77 


3.94 


49.23 


1928 


.. .81 


1.40 


1.32 


2.30 


1.31 


3.68 


5.98 3.52 3.38 


3.92 


3.15 


2.16 


32.93 


1929 


.. 2.54 


.83 


1.54 


4.20 


3.82 


3.15 


4.89 1.09 1.37 


3.54 


.96 


1.79 


29.72 


1930 


.. 2.57 


1.14 


2.47 


4.26 


2.30 


2.13 


.65 2.84 1.86 


1.15 


2.35 


.26 


23.98 


1931... 


.36 


.63 


2.76 


3.86 


4.35 


4.29 


1.48 1.94 6.12 


4.17 


2.47 


1.67 


34.10 


1932 


.. 1.91 


1.44 


1.57 


2.09 


1.21 


2.02 


2.20 4.06 1.66 


3.22 


1.98 


3.44 


26.80 


1933 


.. 2.18 


.64 


5.38 


3.53 


6.51 


.67 


1.29 4.55 9.25 


4.30 


.30 


.95 


39.55 


1934 


.. .98 


.31 


2.70 


.97 


.46 


1.94 


2.54 3.22 4.89 


2.26 


5.42 


1.57 


27.26 


1935 


.. 2.09 


1.97 


2.80 


2.69 


7.39 


5.60 


3.71 1.58 3.00 


1.07 


5.19 


.76 


37.85 


1936 


. 1.51 


2.18 


2.50 


3.02 


3.54 


.30 


1.33 7.24 6.66 


2.45 


2.36 


1.84 


34.93 


1937 


.. 2.83 


1.79 


.56 


4.93 


3.28 


3.50 


2.37 3.31 1.78 


3.10 


1.25 


1.39 


30.09 


1938 


.. 1.37 


3.38 


6.27 


2.87 


4.91 


6.48 


6.64 3.33 1.80 


1.29 


1.28 


1.42 


41.04 


1939 


.. 1.91 


5.09 


2.81 


5.22 


2.81 


5.15 


4.91 3.50 .38 


2.38 


1.57 


.87 


36.60 


1940 


.. 1.07 


.69 


2.04 


1.36 


3.24 


3.05 


.27 1.71 .33 


2.07 


1.16 


1.70 


18.69 


1941 . . . 


. 1.63 


.59 


1.03 


4.90 


2.54 


5.15 


2.05 3.64 2.77 


9.16 


2.73 


1.15 


37.34 


1942 


.. 1.07 


3.48 


5.11 


2.14 


3.97 


2.08 


2.28 4.93 2.79 


1.56 


4.55 


1.88 


35.84 


1943 


.. 1.69 


1.08 


2.63 


4.94 


9.35 


2.66 


2.47 5.87 2.49 


1.58 


1.40 


.32 


36.48 


1944 


.. .41 


2.81 


4.05 


8.00 


5.06 


3.17 


2.80 3.30 1.87 


2.17 


.69 


1.11 


35.44 


1945 


.. .63 


1.46 


4.40 


4.90 


6.66 


5.66 


.65 1.52 6.40 


1.66 


2.05 


2.84 


38.83 


1946 


.. 1.14 


1.65 


3.43 


1.45 


5.73 


6.18 


4.47 1.48 1.15 


4.65 


2.83 


2.12 


36.32 


Aver 


1.52 


1.53 


2.91 


3.50 


4.04 


3.40 


2.96 3.17 3.46 


2.90 


2.26 


1.77 


33.42 


RUSHVILLE, Schuyler county 


1889... 


. 1.70 


1.86 


.81 












3.79 


1.20 




1890 


.. 2.99 


1.43 


2.49 


2.33 


3.42 


3.92 


4.19 2.14 3.64 


1.49 


2.06 


.25 


30.35 


1891 


. 1.05 


2.09 


3.49 


4.49 


4.74 


2.57 


4.78 7.94 .61 


2.34 


4.93 


2.13 


41.16 


1892 


.. 2.07 


2.90 


2.49 


7.68 


7.58 


2.60 


5.95 .60 3.18 


1.27 


1.53 


2.09 


39.94 


1893 


.. 1.16 


3.02 


3.77 


9.10 


7.36 


3.03 


2.45 1.91 2.96 


.22 


1.72 


.81 


37.51 


1894 


. . 2.70 


2.40 


2.41 


3.11 


2.47 


4.21 


.67 2.06 8.32 


1.12 


2.92 


1.70 


34.09 


1895 


.. 1.75 


.37 


1.03 


2.88 


3.32 


3.88 


5.53 4.85 3.44 


.53 


4.72 


5.90 


38.20 


1896 


. 1.56 


1.72 


.78 


4.45 


4.31 


3.72 


9.61 1.77 5.85 


1.59 


1.35 


.67 


37.38 


1897 


. . 6.03 






















1898 
























1899 
























1900 


.. 2.10 


5.42 


.96 










3.76 


1.48 


.39 




1901 


.. 2.50 


1.21 


3.37 


1.89 


.69 








1.07 


1.75 




1902 


.. .67 


1.47 


4.67 


2.76 


2.72 


8.34 


4.38 6.45 4.32 


2.86 


2.00 


2.67 


43.31 


1903 


.. 1.08 


1.50 


2.45 


5.63 


4.41 


2.26 


3.13 4.26 3.99 


1.98 


.97 


.95 


32.61 


1904 


.. 3.07 


.69 


5.05 


6.60 


4.63 


4.11 


4.39 3.25 3.87 


.22 


.03 


2.09 


38.00 


1905 


.. .51 


1.07 


1.75 


3.53 


3.23 


5.33 


2.83 3.02 5.39 


3.11 


1.03 


1.72 


32.52 


1906 


.'. 1.75 


1.90 


3.49 


3.30 


1.73 


3.84 


2.52 3.83 4.82 


.52 


2.24 


2.50 


32.44 


1907 


.. 5.86 


.25 


2.83 


3.99 


3.66 


4.26 


6.82 5.94 .89 


.84 


1.30 


2.00 


38.64 


1908 


.. 1.30 


3.60 


.73 


4.51 


7.07 


4.88 


3.81 2.64 1.29 


.40 


3.05 


.95 


34.23 


1909..... 


.. 2.02 


2.70 


1.02 


5.16 


5.56 


3.51 


3.99 .81 3.99 


2.92 


2.57 


2.32 


36.57 


1910 


.. 1.61 


.71 


.12 


2.82 


6.11 


.61 


2.86 2.04 4.21 


1.19 


.59 


1.16 


24.03 


1911... 


.. 2.45 


1.62 


2.33 


3.66 


1.77 


2.32 


3.07 1.91 14.65 


2.18 


2.12 


2.89 


40.97 


1912 


.. .30 


.84 


2.61 


4.92 


3.41 


1.79 


1.51 2.04 4.09 


3.28 


2.12 


.91 


27.82 


1913 


.. .94 


1.40 


3.88 


3.05 


1.77 


1.95 


.58 .44 2.22 


2.87 


3.35 


1.09 


23.54 


1914 


.. 1.03 


1.97 


2.59 


1.78 


1.18 


2.97 


.94 2.43 4.82 


2.24 


T 


2.67 


24.62 


1915 


.. 2.51 


2.06 


.89 


2.28 


5.54 


6.57 


7.42 4.73 7.26 


.64 


2.22 


2.67 


44.79 


1916 


.. 5.48 


.63 


1.80 


1.31 


7.59 


2.46 


.51 4.36 1.75 


1.63 


1.39 


1.08 


29.99 


1917 


.. .82 


.10 


3.35 


3.93 


4.01 


7.60 


.71 3.05 4.27 


1.84 


T 


.62 


30.30 


1918 


.. 1.30 


.60 


.32 


5.54 


7.55 


2.77 


1.92 4.01 2.42 


2.77 


2.84 


1.89 


33.93 


1919 


.. .05 


1.92 


2.13 


2.56 


5.42 


.-, . ss 


1.46 2.59 4.35 


2.94 


2.98 


.10 


32.38 


1920 


.. .78 


.29 


5.04 


6.81 


5.57 


.76 


4.08 1.45 3.48 


1.80 


1.12 


.98 


32.16 



1949] CLIMATE OF ILLINOIS: APPENDIX B 261 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


RUSHVILLE, Schuyler county, concluded 


1921... 


. 1.82 


.33 


3.82 


4.92 1.89 


3.35 


.87 


5.93 7.77 


2.02 


1.40 


1.81 


35.93 


1922 


.1.70 


1.39 


7.26 


4.68 3.10 


.73 


2.70 


1.71 1.81 


.67 


4.87 


1.29 


31.91 


1923 


. .83 


.70 


4.98 


1.36 3.77 


2.32 


1.67 


6.27 6.46 


2.99 


1.41 


2.32 


35.08 


1924 


. 1.30 


.88 


2.46 


2.48 2.94 


6.11 


3.71 


2.70 2.42 


1.40 


1.11 


3.05 


30.56 


1925 


. .20 


1.59 


1.92 


3.51 1.69 


5.41 


5.77 


5.80 5.31 


2.19 


2.61 


1.06 


37.06 


1926... 


. 1.11 


2.57 


2.50 


2.57 2.74 


5.58 


4.63 


5.78 11.82 


2.46 


3.68 


1.41 


46.85 


1927 


. 1.20 


1.67 


6.46 


5.47 7.51 


3.56 


2.44 


2.86 4.01 


4.02 


3.45 


2.40 


45.05 


1928 


. .23 


1.31 


1.24 


2.61 2.68 


7.21 


5.30 


1.68 4.72 


3.74 


3.69 


1.50 


35.91 


1929 


. 3.74 


.72 


3.85 


3.59 4.64 


6.26 


8.57 


1.57 2.09 


2.85 


1.77 


.69 


40.34 


1930 




2.33 


1.57 


1 . 56 








2.37 


2 99 


.32 




1931... 


.22 


1.36 


2.82 


1.79 5.96 


6.12 


3.84 


2.29 6.43 


2.13 


4.94 


2.66 


40.56 


1932 


. 1.87 


1.37 


1.44 


.36 3.54 


5.20 


4.17 


8.18 2.44 


2.74 


1.09 


4.24 


36.64 


1933 


. 2.19 


.64 


3.43 


2.36 7.52 


2.82 


2.20 


2.01 2.72 


1.79 


.29 


1.60 


29.57 


1934 


. .80 


.66 


1.65 


1.25 .29 


2.48 


1.44 


3.46 8.05 


1.86 


5.90 


1.79 


29.63 


1935 


. 1.54 


1.69 


2.92 


2.65 12.06 


6.99 


3.53 


1.59 2.99 


2.23 


4.68 


.99 


43.86 


1936... 


. 1.40 


1.69 


1.35 


1.22 3.52 


1.70 


.25 


1.71 7.52 


3.23 


1.87 


2.28 


27.74 


1937 


. 4.34 


.47 


.57 


3.68 2.83 


3.29 


4.68 


2 . 55 1 . 64 


2.73 


1.52 


1.93 


30.23 


1938 


. 4.30 


1.31 


4.13 


4.22 6.97 


2.72 


2.20 


2.54 2.44 


1.02 


1.97 


2.11 


35.93 


1939 


. 1.98 


1.87 


3.58 


5.54 2.98 


6.28 


6.03 


7.51 .36 


.50 


.70 


.84 


38.17 


1940 


. 1.09 


.95 


3.01 


3.36 3.29 


2.34 


2.56 


8.56 .13 


2.59 


2.80 


1.39 


32.07 


1941 


. 3.08 


.90 


.90 


6.64 2.44 


3.80 


1.45 


3.70 6.85 


8.96 


1.83 


1.26 


41.81 


1942 


. .71 


3.96 


1.05 


4.01 4.74 


3.32 


5.61 


1.04 2.41 


1.69 


5.84 


3.55 


37.93 


1943 


. 1.23 


67 


1.17 


3.32 9.61 


4.44 


4.33 


1.63 1.61 


1.99 


.85 


1.97 


32.82 


1944 


. .36 


1.73 


4.93 


8.39 4.42 


2.21 


2.23 


3.86 5.21 


1.54 


3.41 


1.31 


39.60 


1945 


. 1.03 


1.35 


5.88 


5.41 5.23 


6.80 


.41 


1.61 9.05 


1.18 


1.13 


2.43 


41.51 


1946 


. 2.15 


.64 


2.72 


3.55 5.32 


2.84 


1.45 


4.50 3.87 


5.84 


5.79 


1.97 


40.64 


Aver 


1.81 


1.50 


2.66 


3.71 4.31 


3.85 


3.31 


3.30 4.23 


2.18 


2.35 


1.75 


34.96 


SPRINGFIELD, Sangamon county 


1879 












1 52 


3 82 84 


1 25 


5.12 


2.88 




1880 


. 2.70 


2.89 


2.37 


3.23 5.76 


2.47 


1.82 


1.80 3.15 


2.04 


1.60 


1.10 


30.93 


1881... 


.84 


5.85 


4.45 


1.96 2.86 


4.96 


3.37 


4.03 6.43 


10.02 


6.93 


4.81 


56.51 


1882 


. 2.48 


7.92 


4.92 


3.85 10.59 


12.71 


1.89 


3.13 1.21 


3.76 


2.60 


3.15 


58.21 


1883 


. 1.96 


7.53 


1.36 


4.42 6.61 


8.40 


3.77 


.95 1.06 


6.08 


3.48 


3.17 


48.79 


1884 


. 1.51 


4.24 


3.70 


2.49 3.79 


6.20 


3.62 


1.54 6.86 


2.74 


1.30 


5.19 


43.18 


1885 


. 2.81 


.94 


.17 


6.36 2.78 


4.18 


1.82 


4.82 4.47 


6.30 


1.44 


2.52 


38.61 


1886... 


. 2.19 


1 Rft 


2.45 


2.98 3.56 


3.83 


.05 


4.19 7.24 


.80 


1.74 


.80 


31.69 


1887 


. 1.09 


4.26 


1.41 


2.89 1.92 


3.07 


1.01 


1.05 2.89 


.85 


1.36 


3.35 


25.15 


1888 


. 3.03 


2.03 


3.48 


1.41 8.61 


5.50 


4.59 


1.43 1.70 


3.61 


3.41 


1.99 


40.79 


1889 


. 2.13 


1.64 


1.97 


.71 6.64 


3.65 


2.14 


.78 4.74 


2.86 


4.05 


2.00 


33.31 


1890 


. 5.72 


2.01 


2.20 


2.94 4.33 


4.50 


2.14 


1.03 .96 


1.30 


1.29 


.26 


28.68 


1891... 


.1.16 


9! 59 


3.21 


2.81 1.96 


2.11 


4.44 


4.65 1.38 


1.88 


5.49 


1.59 


33.27 


1892 


.1.14 


3.41 


2.69- 


7.19 7.51 


2.51 


5.63 


1.89 3.48 


1.05 


4.19 


1.78 


42.47 


1893 


. .65 


3.47 


4.19 


10.23 7.41 


1.99 


1.60 


.28 2.15 


.16 


1.57 


1.03 


34.73 


1894 


. 2.51 


2.58 


3.09 


3.36 2.80 


1.56 


2.06 


1.86 2.94 


.85 


1.63 


3.10 


28.34 


1895 


. 1.12 


1.03 


1.61 


2.49 2.55 


3.49 


5.53 


2.76 2.80 


.27 


3.28 


8.08 


35.01 


1896... 


. 1.77 


2.11 


1.25 


1.91 2.49 


6.45 


8.51 


1.87 5.42 


1.76 


1.88 


.31 


35.73 


1897 


. 5.91 


1.15 


4.47 


3.85 2.19 


4.11 


4.16 


2.86 .35 


.52 


4.94 


3.07 


37.58 


1898 


. 5.81 


2.70 


9.65 


3.76 5.12 


4.76 


2.34 


4.40 6.82 


6.15 


2.94 


1.83 


56.28 


1899 


. 1.51 


2.52 


2.95 


1.12 11.81 


2.45 


1.51 


3.81 3.33 


4.08 


1.84 


1.87 


38.80 


1900 


. .88 


4.85 


1.50 


1.06 2.49 


1.45 


2.89 


4.44 5.15 


2.63 


2.61 


.41 


30.36 


1901... 


. 1.80 


1.31 


2.96 


1 . 23 1 . 88 


5.34 


.58 


2.92 1.95 


1.78 


1.06 


2.70 


25.51 


1902 


. 1.01 


1.01 


3.73 


3.03 1.80 


10.10 


1.41 


5.12 2.30 


2.15 


2.82 


2.23 


36.71 


1903 


. 1.44 


3.05 


1.47 


3.99 5.28 


2.13 


1.59 


2.92 2.48 


1.50 


.98 


1.50 


28.33 


1904 


. 1.98 


1.49 


4.73 


4.81 3.74 


2.34 


4.25 


2.63 3.96 


.11 


.02 


.57 


30.63 


1905 


. 2.13 


1.18 


1.48 


2.02 2.28 


2.31 


3.99 


4.70 2.40 


3.66 


1.60 


1.72 


29.47 



262 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SPRINGFIELD, Sangamon county, 


concluded 


1906 


. 2.99 


2.18 


4.02 


2.26 3.70 3.03 


.93 


4.88 


3.77 


1.46 


3.13 


3.14 


35.49 


1907 


. 6.17 


.30 


4.81 


2.80 2.94 3.29 


6.70 


7.13 


.92 


1.36 


1.87 


2.79 


41.08 


1908 


. 1.77 


4.28 


2.21 


4.48 7.27 1.38 


1.37 


2.62 


1.22 


.29 


1.17 


1.62 


29.68 


1909 


. 2.03 


4.34 


1.10 


5.34 5.91 4.11 


6.47 


1.62 


3.67 


2.76 


3.70 


1.47 


42.52 


1910 


. 1.68 


.94 


.18 


2.82 4.39 4.58 


2.63 


.78 


5.34 


1.74 


1.57 


.86 


27.51 


1911 


. 2.34 


1.73 


1.86 


4.40 1.18 3.44 


4.87 


3.37 


10.68 


2.00 


3.10 


1.86 


40.83 


1912 


. 1.08 


1.56 


4.21 


5.39 4.40 3.13 


4.47 


2.87 


1.42 


3.49 


1.48 


.31 


33.81 


1913 


. 3.55 


1.35 


5.55 


3.55 .96 1.84 


1.66 


2.88 


3.41 


3.61 


4.49 


.77 


33 . 62 


1914 


. 2.13 


2.53 


1.01 


2.99 1.11 1.69 


1.39 


3.32 


1.82 


2.08 


.49 


2.20 


22.76 


1915 


. 2.11 


2.28 


.80 


2.04 9.86 3.22 


5.72 


6.21 


3.31 


.73 


1.60 


2.91 


40.79 


1916 


. 4.77 


1.00 


1.89 


1.43 4.21 3.14 


.31 


4.34 


3.35 


1.97 


2.26 


1.22 


29.89 


1917 


. 1.69 


.47 


5.17 


3.77 3.93 10.77 


3.86 


2.35 


1.61 


.81 


.25 


.75 


35.43 


1918 


. 1.88 


1.71 


.63 


5.19 5.16 3.81 


3.00 


3.46 


4.71 


2.79 


2.29 


2.45 


37.08 


1919 


. .09 


2.15 


2.26 


1.26 3.87 5.46 


1.25 


1.85 


2.74 


5.63 


3.10 


.30 


29.96 


1920 


. .79 


.58 


6.34 


5.42 6.89 3.89 


.92 


4.60 


3.08 


1.49 


.79 


2.99 


37.78 


1921 


. 1.68 


.71 


5.09 


4.75 1.17 5.41 


1.67 


5.18 


4.33 


1.61 


3.25 


2.71 


37.56 


1922 


. 1.83 


.86 


6.81 


5.20 4.64 1.19 


2.56 


.55 


1.00 


1.95 


2.53 


1.59 


30.71 


1923 


. 1.06 


.79 


5.23 


1.72 3.46 2.74 


1.31 


5.35 


5.66 


4.53 


1.44 


3.40 


36.69 


1924 


.1.23 


1.96 


2.79 


2.18 3.83 5.47 


1.71 


3.10 


2.02 


3.02 


1.74 


4.72 


33.77 


1925 


. .42 


1.65 


2.94 


2.59 1.10 3.74 


3.51 


4.42 


4.45 


2.23 


2.33 


1.32 


30.70 


1926 


.1.64 


2.43 


3.57 


5.05 4.54 5.01 


2.40 


4.39 


15.16 


4.87 


4.52 


.90 


54.48 


1927 


. 1.75 


1.03 


6.59 


5.45 7.01 3.50 


3.17 


3.37 


7.46 


2.16 


4.96 


2.68 


49.13 


1928 


. 1.02 


2.42 


1.14 


2.88 4.61 5.06 


3.09 


.73 


3.35 


3.72 


1.79 


1.94 


31.75 


1929 


. 2.58 


.65 


2.96 


3.56 6.32 3.41 


4.66 


2.08 


1.65 


3.33 


1.17 


1.31 


33.68 


1930 


. 3.80 


2.76 


1.17 


1.55 1.65 2.40 


1.33 


2.68 


2.71 


1.44 


2.51 


.32 


24.32 


1931 


.27 


1.57 


2.79 


1.88 4.87 3.94 


2.78 


3.58 


3.15 


3.51 


5.07 


2.80 


36.21 


1932 


. 2.16 


.98 


1.59 


1.49 2.78 6.39 


2.30 


5.42 


1.13 


3.70 


1.32 


2.79 


32.05 


1933 


. 2.85 


1.19 


6.50 


2.57 8.69 3.29 


.42 


2.34 


5.05 


2.38 


.28 


.91 


36.47 


1934 


. 1.33 


.90 


3.50 


1.21 .32 4.55 


6.11 


3.62 


5.24 


1.64 


5.38 


1.88 


35.68 


1935 


. 2.10 


1.57 


2.90 


3.39 7.91 5.69 


5.43 


1.23 


3.22 


2.13 


4.59 


1.06 


41.22 


1936 


. 1.77 


1.74 


3.61 


2.20 1.88 1.14 


1.36 


1.61 


6.06 


2.54 


2.30 


2.71 


28.92 


1937 


. 4.95 


1.67 


.69 


3.64 2.42 4.72 


6.70 


.94 


2.16 


2.81 


1.62 


2.31 


34.63 


1938 


. 1.53 


2.12 


4.45 


3.32 7.34 4.23 


2.83 


2.49 


1.98 


3.36 


1.48 


1.85 


36.98 


1939 


. 2.89 


3.21 


4.56 


5.37 1.62 3.90 


1.07 


5.75 


.14 


1.99 


1.46 


1.09 


33.05 


1940 


. 1.21 


.80 


2.80 


3.68 3.37 1.53 


1.31 


2.47 


.38 


1.14 


2.46 


1.73 


22.88 


1941 


. 2.67 


.58 


1.34 


5.37 3.03 2.25 


2.23 


2.05 


6.97 


13.39 


3.37 


1.47 


44.72 


1942 


.1.59 


4.82 


1.82 


2.34 3.43 5.44 


7.06 


.91 


4.45 


3.07 


5.82 


2.61 


43.36 


1943 


. 1.01 


.72 


2.37 


3.44 10.60 2.78 


3.03 


.10 


2.45 


2.76 


1.28 


1.82 


32.36 


1944 


. .38 


2.76 


3.72 


8.53 4.26 .58 


.81 


4.11 


3.84 


1.22 


1.37 


1.71 


33.28 


1945 


. 1.06 


1.32 


4.77 


4.62 4.20 7.34 


1.00 


3.36 


8.38 


1.95 


3.18 


2.22 


43.40 


1946 


. 1.22 


1.80 


2.57 


2.54 5.59 5.27 


4.15 


3.17 


3.06 


3.65 


5.33 


1.55 


39.91 


Aver 


2.06 


2.18 


3.10 


3.43 4.41 4.03 


2.91 


2.98 


3.60 


2.68 


2.59 


2.06 


36.03 


TUSCOLA, Douglas county 


1893... 






3.20 


8.73 . .95 


.48 


.50 












1894 


. 1.53 


1.05 


3.03 


4.32 2.87 1.12 


2.61 


2.06 


7.24 


.71 


1.97 


1.40 


29.91 


1895 


. .83 


.68 


1.09 


2.19 .60 3.60 


2.26 


1.62 


4.63 


.25 


2.92 


4.66 


25.33 


1896... 


.91 


2.22 


1.46 


1.30 4.79 3.46 


6.85 


3.85 


5.69 


.65 


3.18 


.75 


35.11 


1897 


. 4.39 


1.40 


4.16 


4.76 2.78 4.05 


5.39 


2.10 


.71 


.27 


5.25 


3.33 


38.59 


1898 


. 4.49 


1.63 


8.86 


3.74 5.71 3.93 


3.78 


2.61 


4.82 


4.44 


2.60 


2.78 


49.39 


1899 


, . 1.90 


1.74 


3.29 


1.22 4.39 2.25 


3.71 


1.95 


.72 


3.90 


2.49 


2.86 


30.42 


1900 


. .29 


5.20 


2.07 


1.13 5.46 9.23 


4.28 


7.66 


3.41 


2.99 


3.46 


1.53 


46.71 


1901... 


. 2.16 


2.20 


3.29 


2.04 3.82 4.97 


1.34 


2.70 


1.04 


3.44 


1.82 


3.73 


32.55 


1902 


, . 1.24 


1.61 


3.95 


2.00 2.72 8.56 


4.66 


5.46 


2.85 


2.63 


2.83 


4.24 


42.75 


1903 


. 1.71 


3.20 


1.71 


4.48 2.07 2.60 


3.97 


4.46 


1.48 


1.74 


.90 


2.63 


30.95 


1904 


. 2.69 


1.21 


7.43 


4.73 2.41 2.70 


2.07 


5.95 


4.35 


1.42 


.08 


.87 


35.91 


1905 


, . 2.37 


1.34 


1.26 


3.62 4.18 1.27 


6.01 


2.85 


2.94 


4.70 


1.94 


1.85 


34.33 


1906... 


. . 2.96 


1.83 


5.43 


1.85 1.85 3.73 


4.09 


4.68 


3.89 


1.42 


3.94 


3.58 


39.25 


1907 


, . 5.87 


.42 


4.05 


2.50 2.76 5.22 


5.49 


4.22 


1.17 


1.82 


1.93 


3.19 


38.64 


1908 


, . 1 . 14 


4.41 


3.79 


3.81 8.48 2.40 


2.22 


1.49 


1.70 


.27 


2.63 


1.88 


34.22 


1909 


. . 3.10 


4.51 


1.25 


7.94 3.88 3.70 


4.42 


2.29 


3.10 


3.28 


2.89 


2.74 


43.10 


1910 


. . 2.68 


2.48 


.40 


3.11 5.88 1.76 


6.59 


1.42 


4.75 


3.28 


1.61 


1.51 


35.47 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



263 



Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


TUSCOLA, Douglas county, concluded 


1911... 


. 2.38 


1.81 


2.07 


4.80 .69 


3.49 


2.14 


3.19 9.27 


3.27 


3.00 


1.59 


37.70 


1912 


. 2.25 












3.78 1.72 


1.27 


1.96 


.80 




1913 


. 6.75 


1.24 


6.15 


2.12 .80 


1.28 


.73 


.92 3.43 


4.08 


4.29 


.41 


32.20 


1914 


. 2.11 


2.57 


1.19 


3.03 1.56 


.80 


1.28 


3.75 1.53 


3.66 


1.05 


2.37 


24.90 


1915 


. 2.19 


2.40 


1.12 


1.55 7.47 


2.95 


9.93 


5.31 3.34 


.63 


1.64 


3.24 


41.77 


1916... 


. 7.31 


.83 


1.47 


1.03 4.37 


2.94 


2.88 


2.32 2.44 


2.34 


1.75 


3.37 


33.05 


1917 


. 1.01 


.53 


4.51 


4.20 5.31 


6.38 


5.44 


4.22 3.71 


4.20 


.41 


.73 


40.65 


1918 


.1.58 


1.74 


1.41 


6.73 5.33 


5.76 


2.64 


2.62 6.56 


3.20 


2.16 






1919 


. .62 


1.67 


2.82 


1 . 79 3 . 84 


7.22 


.57 


1.92 2.00 


5.68 


2.87 


.14 


31.14 


1920 


.1.15 


.79 


3.51 


4.56 5.09 


1.16 




1.72 3.09 


2.43 


.98 


2.69 




1921... 


.1.65 


.49 


5.93 


4.19 2.27 


2. .80 


1.08 


5.08 8.52 


2.89 


3.73 


2.26 


40.89 


1922 


. 1.44 


.82 


8.74 


7.25 3.31 


2.05 


1.90 


2.24 .80 


2.41 


2.15 


2.07 


35.18 


1923 


. 1.70 


1.28 


5.11 


2.67 5.39 


2.79 


2.17 


4.43 3.10 


3.31 


1.79 


5.21 


38.95 


1924 


. 2.40 


1.50 


2.95 


4.30 3.20 


6.35 


1.45 


6.44 3.07 


1.14 


1.13 


6.82 


40.75 


1925 


. .73 


1.30 


5.45 


3.03 .64 


5.68 


2.02 


4.78 3.39 


2.40 


3.33 


.77 


33.52 


1926 


. 1.51 




2.52 


5 . 79 3 . 25 


3.09 


3.19 


4.81 14 05 


3 77 


2 85 


94 




1927 


. 1.80 


.88 


4.39 


5.45 10.87 


5.26 


3.49 


4.43 5.00 


5.00 


5.66 


2.82 


55.05 


1928 


. 2.18 


3.74 


1.47 


3.85 4.67 


6.03 


2.59 


3.30 4.91 


3.55 


2.70 


3.21 


42.20 


1929 


. 3.95 


.65 


4.02 


6.82 9.40 


3.10 


6.56 


1.52 .97 


3.85 


1.60 


3.56 


46.00 


1930 


. 4.21 


3.45 


2.14 


3.74 .21 


3.15 


1.68 


3.58 3.10 


1.62 


2.06 


.47 


29.41 


1931 


. .86 




2.48 


.... 5.51 


2.49 


1.94 


3.41 6.91 


3.42 


3.84 


2.32 




1932 


. 2.62 


2.16 


1.52 


1.24 1.47 


6.46 


2.69 


2.37 1.90 


3.68 


2.21 


3.43 


31.75 


1933 


. 3.09 


1.94 


5.31 


4.01 8.45 


1.41 


.87 


8.56 3.97 


2.72 


.55 


.94 


41.82 


1934 


. 1.29 


.77 


3.21 


.92 .46 


2.45 


4.25 


9.45 6.87 


.97 


5.68 


2.24 


38.56 


1935 


. 1.76 


.79 


3.38 


2.17 7.97 


4.37 


3.03 


1.78 3.60 


1.73 


4.43 


1.67 


36.68 


1936... 


. 1.02 


2.67 


3.74 


2.47 1.85 


1.41 


3.02 


1.28 5.90 


5.93 


3.55 


3.11 


35.95 


1937 


. 5.77 


1.36 


.80 


5.79 2.48 


7.79 


4.24 


3 . 39 4 . 74 


5.82 


1.76 


2.02 


45.96 


1938 


.1.15 


2.14 


5.09 


3.95 7.30 


6.33 


6.04 


5.68 2.03 


2.22 


1.77 


2.65 


46.35 


1939 


. 3.38 


4.00 


4.52 


5.42 2.01 


5.88 


1.32 


5.60 .89 


3.49 


1.28 


1.01 


38.80 


1940 


.1.34 


.87 


1.95 


5.14 3.58 


5.07 


.89 


4.22 .87 


1.74 


3.73 


1.52 


30.92 


1941... 


. 1.51 


.77 


1.58 


2.96 4.59 


4.28 


2.46 


4.33 3.69 


8.70 


2.89 


1.15 


38.91 


1942 


. 1.03 


2.41 


3.04 


3.42 3.25 


7.23 


5.42 


1 . 95 4 . 06 


2.57 


5.88 


2.47 


42.73 


1943 


. .52 


.85 


2.74 


3.36 11.39 


5.14 


3.17 


2.14 1.97 


1.12 


2.49 


1.37 


36.26 


1944 


. T 


2.10 


4.26 


7.47 3.53 


1.74 


1.21 


4.33 5.93 


.78 


2.26 


1.49 


35.10 


1945 


. .46 


1.28 


8.80 


4.18 5.12 


5.40 


1.77 


3.47 6.41 


2.39 


3.40 


2.26 


44.94 


1946 


.1.67 


2.68 


2.14 


1.71 7.43 


3.45 


4.89 


4.04 1.02 


3.98 


4.68 


3.24 


40.93 


Aver 


2.20 


1.83 


3.42 


3.74 4.21 


3.94 


3.25 


3.60 3.76 


2.81 


2.64 


2.31 


37.71 










URBANA, 


Champaign county 


1889... 


. 1.48 


2.08 


1.61 


.61 5.52 


6.81 


5.81 


.60 2.74 


1.42 


4.38 


1.82 


34.88 


1890 


. 5.26 


1.87 


2.70 


4.11 3.56 


3.80 


2.83 


1.93 1.19 


2.35 


1.63 


.05 


31.28 


1891... 


.99 


2.60 


3.55 


3.54 .89 


2.08 


1.41 


2.86 .41 


1.29 


5.58 


1.53 


26.73 


1892 


. .79 


2.64 


2.59 


6.45 7.86 


5.36 


2.50 


2.45 .93 


.93 


4.95 


1.62 


39.05 


1893 


. 1.05 


4.48 


3.20 


7.68 4.83 


1.55 


.59 


.06 3.62 


1.14 


2.98 


1.09 


32.37 


1894 


. 1.95 


1.32 


2.41 


1.86 3.32 


1.78 


1.08 


2.06 4.21 


.51 


2.77 


1.44 


24.72 


1895 


. 1.36 


.52 


.70 


2.42 2.20 


2.24 


3.61 


1.81 5.27 


.21 


3.07 


5.71 


29.12 


1896... 


. 1.12 


1.95 


1.22 


1.89 5.62 


2.98 


7.87 


3.74 5.84 


.42 


2.87 


.39 


35.91 


1897 


. 4.53 


1.17 


4.10 


3.69 1.81 


5.16 


4.68 


.63 .31 


.42 


4.91 


2.67 


34.08 


1898 


.4.77 


1.43 


7.76 


2.71 5.65 


6.08 


1.89 


3.61 5.13 


4.53 


3.01 


1.86 


48.43 


1899 


. 1.97 


2.33 


1.78 


.50 6.09 


2.29 


2.65 


2.29 1.07 


5.10 


1.39 


2.14 


29.60 


1900 


. .17 


3.59 


1.79 


.84 4.60 


4.11 


3.81 


6.23 2.23 


2.29 


3.42 


1.00 


34.08 


1901... 


. 1.55 


1.41 


3.14 


.80 1.93 


5.80 


2.48 


1.68 1.38 


4.10 


1.31 


3.06 


28.64 


1902 


. .62 


1.48 


1.69 


2.11 2.60 


11.73 


4.02 


9.80 4.90 


2.10 


2.43 


2.94 


46.41 


1903 


. 1.04 


2.40 


1.43 


5.71 3.95 


2.56 


5.13 


2.33 .99 


2.70 


2.06 


2.18 


32.48 


1904 


. 3.09 


1.86 


7.66 


3.97 1.60 


1.17 


2.72 


3.55 2.53 


.81 


T 


.83 


29.79 


1905 


. 1.80 


2.27 


.75 


2.95 4.24 


1.30 


5.40 


2.14 2.88 


3.11 


1.45 


1.31 


29.60 


1906... 


. 1.65 


1.11 


4.61 


2.23 3.31 


3.08 


2.16 


4.57 2.45 


1.36 


4.59 


3.13 


34.25 


1907 


. 6.09 


.24 


3.34 


2.34 5.04 


5.56 


5.41 


4.42 .94 


1.51 


1.99 


3.32 


40.20 


1908 


. 1.21 


4.09 


3.20 


5.00 7.83 


1.99 


2.31 


2.05 1.95 


.21 


1.99 


1.44 


33.27 


1909 


. 2.17 


5.80 


1.76 


7.44 5.58 


3.75 


7.57 


2.37 2.36 


2.25 


3.45 


2.55 


47.05 


1910 


2.23 


1.79 


.38 


1.57 5.35 


2.99 


2.76 


2.62 4.14 


1.34 


1.20 


1.59 


27.96 



264 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


UKBANA, 


Champaign county, concluded 


1911 


. 2.27 


1.19 


1.85 


3.59 


2.44 .82 .62 


3.35 


8.90 


3.10 


2.83 


1.35 


32.31 


1912 


.1.36 


2.28 


3.42 


5.60 


4.16 1.89 3.68 


2.06 


1.76 


2.95 


1.77 


.57 


31.50 


1913 


. 5.38 


1.10 


5.99 


2.19 


.56 1.73 1.52 


1.44 


2.50 


4.03 


4.49 


.77 


31.70 


1914 


. 1.97 


2.50 


.89 


2.87 


1.94 2.40 1.44 


2.66 


2.11 


2.85 


.80 


2.25 


24.68 


1915 


. 1.81 


2.33 


1.12 


1.59 


5.11 2.98 7.30 


4.90 


2.58 


.64 


1.02 


2.85 


34.23 


1916... 


. 6.02 


.63 


1.14 


1.28 


<5.70 3.88 .47 


1.72 


2.69 


2.26 


1.93 


1.99 


29.71 


1917 


. 1.07 


.45 


4.43 


3.26 


4.91 6.45 2.73 


3.80 


2.01 


2.34 


.18 


.60 


32.23 


1918 


. 1.74 


1.86 


1.57 


6.78 


4.70 5.43 2.51 


5.15 


4.91 


2.82 


1.73 


3.99 


43.19 


1919 


. .21 


1.92 


4.12 


.75 


3.29 6.90 2.04 


4.47 


2.47 


5.59 


3.37 


.12 


35.25 


1920 


. .83 


.45 


3.40 


5.69 


3.80 .94 3.08 


3.19 


1.79 


2.02 


1.29 


2.81 


29.29 


1921... 


. 1.60 


.49 


5.82 


5.25 


5.26 1.68. 2.54 


4.26 


5.64 


2.23 


4.91 


1.98 


41.66 


1922 


. 1.23 


1.60 


8.35 


7.64 


3.70 1.03 2.51 


2.82 


.57 


3.17 


2.30 


1.81 


36.73 


1923 


.1.57 


1.34 


5.25 


2.96 


5.26 3.20 3.26 


4.08 


2.99 


3.78 


1.68 


5.01 


40.38 


1924 


. 1.70 


1.93 


2.74 


3.61 


2.69 8.68 .86 


7.65 


2.22 


1.36 


.83 


6.13 


40.40 


1925 


. .73 


1.28 


4.62 


1.85 


.22 2.28 1.12 


3.44 


5.24 


4.60 


2.81 


1.19 


29.38 


1926... 


. 1.86 


2.98 


2.75 


4.01 


1.54 4.40 2.60 


5.79 


9.76 


4.45 


2.46 


.93 


43.53 


1927 


. 1.67 


1.22 


3.84 


6.48 


5.01 5.87 6.02 


4.79 


6.27 


4.15 


6.77 


3.55 


55.64 


1928 


. 2.18 


2.28 


1.45 


3.16 


2.48 4.65 3.59 


2.77 


3.65 


2.34 


1.88 


2.53 


32.96 


1929 


. 3.56 


.53 


2.92 


6.40 


7.80 2.71 6.46 


4.77 


.94 


3.72 


1.36 


2.96 


44.13 


1930 


. 4.81 


1.77 


1.87 


4.07 


1.53 2.23 .47 


2.02 


2.98 


1.62 


1.49 


.22 


25.08 


1931... 


.47 


1.26 


2.62 


4.43 


3.97 4.33 4.26 


2.90 


5.41 


2.29 


2.54 


2.00 


36.46 


1932 


. 2.60 


1.69 


1.83 


1.31 


1.28 3.57 2.41 


2.63 


3.63 


3.84 


2.37 


3.33 


30.49 


1933 


. 1.96 


1.40 


5.38 


3.35 


5.84 1.19 .61 


4.40 


5.14 


3.41 


.67 


1.12 


34.47 


1934 


. 1.42 


.76 


3.60 


1.03 


.53 5.33 2.09 


4.87 


6.99 


.87 


5.44 


2.22 


35.15 


1935 


. 2.17 


1.27 


2.69 


2.87 


6.93 3.64 4.12 


2.36 


3.94 


1.65 


4.25 


1.32 


37.21 


1936... 


. 1.28 


2.81 


1.55 


3.00 


3.94 .47 1.35 


3.54 


5.83 


3.49 


4.16 


3.67 


35.09 


1937 


. 5.97 


1.49 


.76 


5.38 


2.59 5.43 2.43 


.80 


5.34 


3.92 


1.49 


2.05 


37.65 


1938 


. 1.58 


2.28 


7.20 


3.42 


4.97 5.67 6.45 


4.28 


.88 


2.50 


1.57 


1.97 


42.77 


1939 


. 3.72 


3.72 


4.83 


5.39 


1.19 6.17 1.73 


6.38 


.32 


2.54 


1.13 


.93 


38.05 


1940 


. 1.43 


1.10 


2.07 


3.96 


4.53 5.04 .95 


2.80 


.48 


1.93 


3.83 


2.48 


30.60 


1941... 


.1.34 


.64 


1.46 


4.21 


3.94 6.19 3.27 


3.61 


4.91 


9.01 


3.33 


.96 


42.87 


1942 


. 1.93 


3.84 


4.12 


3.32 


3.57 3.92 4.94 


2.58 


3.89 


2.36 


5.40 


2.51 


42.38 


1943 


. .62 


1.09 


3.80 


3.47 


11.20 2.43 1.42 


3.94 


2.12 


2.00 


2.17 


1.28 


35.54 


1944 


. .37 


3.70 


4.65 


7.43 


7.70 2.61 3.82 


3.85 


2.82 


1.29 


1.34 


1.15 


40.73 


1945 


. .36 


1.49 


6.18 


4.37 


5.09 7.33 3.27 


5.09 


7.27 


2.45 


2.62 


2.49 


48.01 


1946 


.1.55 


2.46 


3.29 


1.45 


6.85 5.77 2.74 


2.11 


1.15 


2.65 


3.90 


1.54 


35.46 


Aver 


. 2.06 


1.89 


3.19 


3.58 


4.15 3.85 3.09 


3.36 


3.27 


2.52 


2.65 


2.04 


35 65 


WATSEKA, Iroquois 


county* 


1886... 


. 2.06 


1.78 


2.04 


2.33 


5.38 3.40 3.06 


3.75 


5.23 


.62 


1.49 


1.42 


32.56 


1887 


. 1.21 


5.03 


1.02 


2.17 


1.95 2.05 2.12 


3.37 


2.74 


1.65 


2.90 


4.11 


30.32 


1888 


. 2.82 


1.50 


2.53 


2.11 


4.96 4.43 2.49 


.61 


.50 


2.36 


3.20 


1.92 


29.43 


1889 


. 1.39 


1.70 


1.65 


1.28 


6.40 5.65 6.54 


2.01 


2.71 


2.68 


3.15 


1.53 


36.69 


1890 


. 4.79 


1.77 


3.28 


3.86 


5.37 5.78 1.57 


2.70 


2.08 


3.73 


1.56 






* 
























1896... 










3.25 4.42 7.02 


3.62 


5.50 


.25 


1.98 


.13 


33.24 


1897 


. 3.61 


1.37 


3.96 


2.26 


1.78 4.44 1.67 


1.28 


.29 


.61 


5.71 


2.20 


29.18 


1898 


. 3.44 


1.90 


4.38 


1.98 


5.66 2.65 1.11 


4.03 


5.77 


4.36 


2.81 


1.80 


39.89 


1899 


. 1.37 


.89 


2.14 


.20 


4.02 2.22 2.55 


2.19 


2.30 


3.17 


1.84 


3.11 


26.00 


1900 


. .74 


4.56 


3.52 


1.31 


4.22 2.33 4.34 


5.10 


2.09 


1.82 


5.78 


.52 


36.33 


1901... 


. 1.55 


1.30 


4.06 


1.37 


2.19 4.76 1.85 


3.15 


1.82 


2.90 


1.10 


3.10 


29.15 


1902 


. .83 


1.81 


4.14 


3.36 


4.51 12.53 6.29 


2.37 


6.84 


1.72 


3.37 


2.91 


50.68 


1903 


. 1.29 


2.00 


1.28 


7.18 


4.67 3.33 4.34 


3.88 


2.40 


2.54 


.79 


.29 


33.99 


1904 


. 2.02 


1.60 


4.08 


3.26 


3.92 1.68 2.03 


3.24 


4.81 


1.23 


.09 


1.85 


29.81 


1905 


. .81 


2.05 


1.79 


3.96 


8.93 4.38 2.68 


4.91 


2.77 


2.10 


2.68 


1.60 


38.66 


1906. 


. 3.26 


1.77 


3.54 


2.03 


4.25 3.17 6.02 


7.19 


4.59 


1.80 


3.25 


3.40 


44.27 


1907 


. 4.57 


.20 


5.23 


2.56 


2.86 4.04 5.65 


6.62 


4.17 


.65 


2.70 


4.68 


43.93 


1908 


. 1.75 


4.05 


2.79 


4.30 


9.95 1.65 1.24 


2.86 


2.60 


.67 


1.58 


2.08 


35.52 


1909 


. 2.30 


4.39 


2.00 


4.90 


2.95 4.27 2.45 


7.31 


3.82 


3.35 


5.53 


4.10 


47.37 


1910 


.2.55 


1.07 


.45 


2.27 


4.47 1.25 4.36 


5.80 


4.50 


2.87 


.26 


1.16 


31.01 



Values from May, 1896, thru 1916 are for Martinton, 9 miles north of Watseka. 



1949] CLIMATE OF ILLINOIS: APPENDIX 3 265 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


WATSEKA, Iroquois county, concluded 


1911... 


. 1.43 


1.06 


1.50 


4.12 


5.79 


1.90 .80 


2.65 9.40 


2.99 


2.00 


1.86 


35.50 


1912 


. . .62 


.97 


2.03 


3.87 


6.58 


4.98 2.31 


4.51 1.92 


2.70 


2.15 


.56 


33.20 


1913 


. . 3.38 


.96 


5.22 


3.35 


5.79 


1.87 2.19 


3.49 2.22 


4.00 


2.40 


1.22 


36.09 


1914 


. . 1.89 


1.01 


1.86 


2.38 


4.72 


1.56 1.47 


2.62 3.26 


.94 


.33 


1.85 


23.89 


1915 


. 1.95 


1.89 


69 


3.10 


4.15 


1.59 12.52 


3.39 4.71 


.92 


1.32 


1.45 


37.68 


1916 


. . 5.13 


.26 


1.08 


1.65 


7.10 


4.91 .61 


1.47 2.07 










* 
























1921... 












. 4.12 


4.50 . 


2.70 


4.10 


2 05 




1922 


. 1.69 


.97 


5.73 


4.48 


2.32 


1.78 4.47 


1.95 1.55 


3.30 


2.83 


1.28 


32.35 


1923 


. . 1.38 


.62 


4.70 


2.63 


4.78 


1.68 1.50 


4.93 4.72 


4.90 


1.73 


3.83 


37.40 


1924 


, . 1 . 82 


2.23 


2.44 


3.57 


2.59 


9.11 2.16 


5.95 2.31 


.30 


.90 


3.54 


36.92 


1925 


, . .51 


.75 


2.75 


2.00 


.48 


3.53 2.18 


.50 4.60 


2.75 


2.27 


.92 


23.24 


1926... 


. 1.75 


2.38 




3.76 


3.57 


2.65 5.09 


4.43 11.59 


4.41 


2.93 


1.34 




1927 


. 1.59 


2.98 


3.11 


4.90 


6.34 


5.35 3.32 


2 . 77 


3.60 


6 46 


4 84 




1928 


. 1.07 


1.51 


. 1.49 


3.15 


2.09 


4.98 6.96 


4.83 1.33 


1.85 


1.58 


2.68 


33.52 


1929 






2.24 


4.44 


4.99 


7.33 3.72 


1 . 50 1 . 27 


4.24 


.85 






1930 , 


. 4.16 




1.79 


4.99 


2.55 


2.86 .45 


1.59 3.23 




2.46 


.34 




1931... 


.22 


.74 


2.20 


3.22 


5.87 


4.00 5.50 


2.65 3.76 


3.84 


3.48 






1932 


. 2.45 




2.91 


2.10 


1.47 


2.41 2.51 


3.65 2.64 


4.21 


2.65 


3.66 




1933 


2 25 


.95 


5 79 


3 65 


8.33 


.74 .90 


8 07 


4 13 




1 77 




1934 




.37 


2.49 


1.33 


.33 


1 . 90 1.14 


4 . 09 7 . 52 


1.64 


4 37 


2 04 




1935 


. 3.55 


1.08 


4.71 


2.18 


6.92 


3.73 4.50 


2.03 3.16 


1.90 


5.01 


1.06 


39.83 


1936... 


.1.50 


2.09 


3.15 


2.21 


3.94 


.09 .59 


3.08 4.31 


2.45 


2.12 


2.13 


27.66 


1937 


. 3.09 


1.10 


.67 


6.30 


3.16 


6.49 2.85 


3.71 2.53 


2.58 


1.29 


1.88 


35.65 


1938 


,. 1.21 


3.78 


5.90 


2.32 


3.62 


6.63 4.10 


3.31 2.82 


1.68 


1.51 


1.47 


38.35 


1939 


. 2.65 


3.99 


2.48 


5.13 


1.05 


4.81 5.20 


3 . 60 .24 


2.51 


1.41 


.40 


33.47 


1940 


.1.18 


.76 


1.77 


4.53 


5.11 


3.17 .97 


2.63 .76 


1.95 


2.77 


1.93 


27.53 


1941... 


. 1.66 


.74 


1.26 


3.75 


4.45 


4.56 3.60 


2.67 2.74 


8.83 


2.39 


1.32 


37.97 


1942 


. 1.46 


3.77 


4.43 


2.06 


3.85 


2.65 6.94 


5.93 4.03 


1.84 


4.73 


2.18 


43.87 


1943 


, . 2.38 


1.08 


2.81 


4.18 


9.94 


2 . 73 4 . 56 


3.96 1.23 


1.74 


1.96 


.41 


36.98 


1944 


. . .45 


2.34 


3.51 


5.96 


6.77 


2.72 1.65 


3.76 1.71 


1.82 


1.17 


1.53 


33.39 


1945 , 


. .68 


1.43 


4.58 


3.47 


6.72 


3.02 1.50 


5.13 5.62 


1.82 


2.25 


2.81 


39.03 


1946 


. 1.18 


2.08 


3.65 


1.49 


4.79 


5.66 1.58 


1 . 59 1.15 


4.16 


2.50 


2.09 


31.92 


Aver 


. . 2.01 


1.80 


2.91 


3.18 


4.55 


3.72 3.30 


3.51 3.48 


2.56 


2.51 


2.01 


35 54 


WHITE HALL, Greene county 


1854 












.... 1.01 


3 . 30 


5.28 


1.02 


1.19 




1855 


.13.53 


1.56 


2.91 


3.97 


6.43 


2.00 3.52 


2.06 2.76 


2.55 


2.82 


3.92 


48.03 


1856... 


.1.10 


4.69 


1.55 


1.23 


4.32 


1.93 2.11 


2.11 1.11 


2.46 


3.43 


4.98 


31.02 


1857 


, . .85 


6.91 


2.62 


.77 


2.73 


3.84 2.28 


4.52 2.39 


1.67 


3.83 


1.35 


33.76 


1858 


. 2.35 


1.67 


2.05 


3.65 


9.20 


7.60 6.52 


2.18 4.59 


4.29 


2.86 


2.45 


49.41 


1859 


2.06 


2.48 


4.15 


3.62 


10.76 


5.50 2.70 


2.81 2.85 


1.22 


2.92 


1.30 


42.37 


1861... 


. 1.33 


2.29 


6.19 


2.18 


3.37 


4.52 1.59 


1.52 2.83 


2.27 


.94 


1.00 


30.03 


1862 


.. 5.15 


.72 


2.66 


7.05 


2.56 


2.32 5.34 


1.70 4.69 


1.77 


2.30 


3.57 


39.83 


1863 


. 2.89 


4.01 


3.77 




1.80 


.89 3.73 


1.97 2.79 


3.93 


1.77 


3.36 




1864 


. 3.12 


.87 


2.05 


4.34 


2.01 


1.12 2.02 


1.87 2.42 


1.97 


3.67 


1.94 


27.40 


1865 


. .25 


5.23 


4.58 














1.63 




1866... 


. 3.74 


4.03 


3.11 


4.16 


4.95 


1.22 4.01 


2.89 7.08 


5.98 


.50 


2.03 


43.70 


1867 


. 1.60 


6.34 


1.95 


.47 


5.4.5 


3.36 2.83 


2.50 .50 


1.42 


1.60 


1.01 


29.03 


1868 


. 1.19 


.19 


6.81 


5.60 


5.59 


3.22 1.70 


3.02 3.89 


1.43 


3.12 


2.25 


38.01 


1869 


. 3.67 


1.97 


2.43 


6.25 


4.38 


4.82 6.98 


1.86 .94 


1.67 


2.89 


2.87 


40.73 


1870 


. 1.16 


.35 


4.61 


1.95 


1.59 


2.60 4.55 


5.22 2.61 


2.43 


1.65 


2.30 


31.02 


1871... 


. 3.50 


1.55 


4.40 


.95 


2.48 


1.95 1.40 


.80 .08 


3.10 


3.05 


2.70 


25.96 


1872 


. .68 


2.95 


3.60 


2.30 


1.93 


9.93 6.00 


3.64 2.83 





1.07 


1.55 


36.48 


1873 


5 01 


2 50 


1 80 


5 25 


7 26 


3 05 2 85 


1 81 3 89 


2 83 


3 15 






1874 


. 2.36 


3.19 


2.75 


3.30 


2.75 


1 . 90 3 . 00 


5.60 3.15 











266 BULLETIN NO. 532 [April, 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


WHITE HALL, Greene 


county, concluded 


1884 




















1.55 




1885 


1 65 


.85 


.20 


5.10 3.00 


8.87 










1.90 




1886 


.1.35 


.95 


1.16 


5.00 5.75 


4.44 




5.87 6.74 


1.13 


1.63 


1.62 




1887 


. 1.45 


3.75 


1.28 


3.05 4.41 


1.07 




1.37 2.65 


.58 


1.86 


2.37 




1888 


. 2.86 


2.10 


3.35 


.99 5.48 


5.41 


4.52 


5.43 2.10 


1.83 


2.09 


3.20 


39.36 


1889 


. 2.12 


2.10 


2.51 


1.09 10.63 


3.87 


4.07 


1.04 4.22 


3.34 


4.08 


.06 


39.13 


1890 


. 6.70 


2.55 


2.12 


2.09 3.02 


3.81 


2.09 


1.63 2.04 


1.05 


.94 


.43 


28.47 


1891 


. 1.21 


2.72 


1.88 


1.89 1.83 


6.49 


.92 


2.54 2.02 


1.39 


4.69 


.93 


28.51 


1892 


. 1.75 


4.09 


2.30 


6.29 9.20 


2.59 


6.16 


.87 1.99 


1.44 


2.79 


1.94 


41.41 


1893 


.47 


2.31 


4.62 


9.31 4.47 


5.08 


1.80 


.36 1.21 


1.30 








1894 




.40 


2.37 


2.02 2.32 


1.90 




3.76 


.93 


1.38 


3.47 




1895 


. .62 


.59 


1.88 


2.61 2.01 






3.25 3.97 


.52 


2.27 


6.70 


34.50 


1896... 


. 1.41 


1.24 


1.45 


1.86 6.94 


2.92 


6.42 


2.19 4.58 


1.37 


1.50 


.50 


32.38 


1897 


. 4.99 


1.21 


4.63 


4.33 2.09 


4.89 


6.54 


.01 .59 


.31 


5.00 


1.94 


36.53 


1898 


. 5.10 


2.00 


6.36 


5.16 7.33 


2.94 




4.24 


3.57 


1.84 


1.82 




1899 


. 1.35 


2.01 


2.75 


1.30 8.01 
















1902 














6.07 4.66 


2.36 


3.69 


3.14 




1903 




3.27 


3.11 


3.57 2.33 






4.73 


1.39 


.28 


1.40 




1904 


. 2.30 


.24 


5.77 


7.34 4.46 


4.83 


7.08 


4.63 6.95 


.50 


.10 


1.20 


45.40 


1905 


. 2.20 


1.40 


2.26 


2.51 6.92 


3.82 


8.05 


5.95 6.02 


4.90 


2.20 


1.85 


48.08 


1906 


. 3.15 


4.45 


5.40 


3.55 5.90 


2.55 


1.06 


. 4.88 


2.35 


3.82 


4.60 




1907 


. 5.32 


.90 


3.01 


3.13 3.70 


6.00 


9.88 


1.55 


3.75 


3.25 






1908 


2.80 


5.48 


1.90 








.97 1.72 


.25 


2.44 


i.64 




1909 


. 3.28 


4.33 


1.50 


4.45 5.62 


4.18 


6.02 


1.48 4.74 


5.48 


5.85 


2.38 


49.31 


1910 


.1.90 


1.70 


.05 


3.34 7.18 


1.80 


4.26 


1.12 7.29 


1.89 


.69 


.83 


32.05 


1911... 


. 3.63 


2.67 


1.98 


3.97 1.10 


1.28 


3.12 


5.69 8.13 


2.51 


2.94 


2.20 


39.22 


1912 


. .60 




4.20 


5.87 4.31 


4.35 


1.48 


4.58 2.78 


4.11 


1.58 


.55 


36.27 


1913 


.4.60 


1.81 


6.03 


3.24 2.04 


1.08 


1.26 


2.87 3.87 


3.64 


4.74 


1.16 


36.34 


1914 


. 2.50 


2.26 


1.89 


2.92 .48 


2.28 


1.65 


3.56 3.00 


5.26 


.64 


2.15 


28.59 


1915 


.2.66 


1.75 


.69 


3.27 6.83 


8.41 


5.65 


7.80 5.13 


1.00 


2.30 


2.18 


47.67 


1916... 


. 4.86 


1.38 


1.59 


1.79 4.91 


4.37 


.32 


8.78 3.66 


2.09 


1.96 


1.06 


36.77 


1917 


. .92 


.29 


3.21 


4.44 4.91 


4.54 


2.20 


2.51 3.28 


1.09 


.47 


.56 


28.42 


1918 


. .73 


1.66 


.81 


6.48 3.63 


3.28 


1.47 


2.29 5.25 


3.26 


2.79 


2.30 


33.95 


1919 


. .15 


2.10 


2.10 


1.82 5.13 


2.91 


2.99 


2.33 4.66 


8.27 


2.91 


.40 


35.77 


1920 


. .45 


.14 


4.75 


3.29 5.91 


1.56 


.96 


4.09 4.47 


3.55 


.83 


2.53 


32.53 


1921... 


.1.17 


.77 


4.06 


5.70 2.01 


3.04 


2.69 


5.76 7.67 


1.73 


2.87 


2.87 


40.34 


1922 


.2.30 


.84 


7.97 


8.28 2.57 


1.05 


1.92 


1.27 1.20 


1.93 


3.02 


1.75 


34.10 


1923 


. .95 


.83 


4.86 


2.58 2.31 


2.65 


1.72 


4.81 3.47 


3.91 


1.69 


3.31 


33.09 


1924 


.1.17 


1.25 


4.14 


1.04 4.71 


5.22 


2.40 


2.33 4.19 


2.25 


1.98 


4.90 


35.58 


1925 


. .43 


1.39 


2.52 


1.98 1.80 


5.36 


4.53 


2.73 2.89 


5.21 


2.99 


.98 


32.81 


1926... 


. 1.59 


2.51 


2.71 


4.56 .99 


4.12 


2.19 


4.14 15.77 


4.64 


4.23 


1.31 


48.76 


1927 


. 1.49 


.86 


6.04 


7.03 6.89 


3.55 


6.90 


3.27 4.49 


3.24 


4.77 


2.36 


50.89 


1928 


1 32 


1 65 


71 


3 92 2 24 


7 26 


2 46 


1 96 1 31 


5 04 


2 23 


1 63 


31 73 


1929 


. 2.99 


.56 


4.20 


4.63 9.62 


2.99 


4.02 


2.21 2.18 


4.56 


1.22 


.91 


40.09 


1930 


. 2.66 


1.12 


1.04 


1.27 1.05 


2.88 


.48 


.50 4.92 


1.47 


2.68 


.73 


20.80 


1931... 


.43 


2.01 


2.34 


1.69 5.20 


1.95 


2.47 


2.56 2.97 


2.77 


4.13 


3.29 


31.81 


1932 


, . 1.69 




1.27 


2.73 1.64 


5.81 


3.46 


7.07 2.08 


3.18 


2.92 


3.38 




1933 


. 3.02 


1.79 


3.97 


4.30 7.58 


.61 


1.39 


2.96 3.29 


4.97 


.52 


1.01 


35.41 


1934 


, . 1.26 


.75 


2.35 


1.49 .37 


1.43 


.04 


2.88 7.52 


2.54 


4.08 


1.48 


26.19 


1935 


. 2.30 


1.68 


3.99 


3.03 8.59 


6.02 


2.47 


.76 1.65 


2.20 


5.72 


.84 


39.25 


1936... 


. 1.23 


1.10 


2.13 


1.43 2.30 


2.84 


.42 


.69 8.01 


3.25 


2.46 


2.81 


28.67 


1937 


, . 4.76 


1.64 


1.04 


4.92 3.90 


5.60 


5.23 


3.37 1.07 


2.79 


2.06 


2.11 


38.49 


1938 


, . 1.82 


1.73 


5.04 


3.86 4.13 


5.05 


4.60 


3.48 1.60 


2.34 


2.06 


2.42 


38.13 


1939 


. 1.97 


2.50 


3.61 


5.26 1.49 


6.14 


3.78 


4.72 .30 


2.70 


1.44 


1.10 


35.01 


1940 , 


, . .77 


.56 


2.73 


2.81 2.85 


3.33 


.38 


4.36 T 


1.25 


2.60 


2.01 


23.65 


1941 


. . 3.35 


.23 


1.36 


5.55 2.34 


5.66 


2.15 


3.05 5.99 


12.43 


3.24 


1.33 


46.68 


1942 


.. 1.31 


3.03 


1.87 


2.88 4.45 


9.20 


6.51 


2.45 4.02 


2.51 


7.61 


2.60 


48.44 


1943 


. . .47 


.84 


3.16 


1.49 11.15 


4.18 


3.64 


.83 3.55 


1.91 


1.29 


1.46 


33.97 


1944 


. . .27 


1.75 


3.14 


6.69 5.90 


.95 


1.43 


5.12 3.43 


1.67 


1.46 


1.38 


33.19 


1945 


. . 1.08 


1.76 


5.60 


5.59 3.50 


12.35 


.91 


1.78 9.32 


1.73 


1.83 


1.79 


47.24 


1946 


. . 1.24 


1.73 


2.20 


2.30 4.63 


2.83 


2.99 


9.90 1.65 


4.33 


7.09 


1.46 


42.35 


Aver 


. . 2.28 


2.01 


3.03 


3.61 4.42 


3.91 


3.26 


3.13 3.72 


2.75 


2.59 


2.02 


36.73 



1949] CLIMATE OF ILLINOIS: APPENDIX B 267 

Table 10. CENTRAL ILLINOIS: Monthly and Annual Precipitation 

(Concluded) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


WINDSOR, Shelby county 


1885 












11.02 


6.69 


4.19 


1.70 


3.80 




1886... 


. 4.32 


1.22 


2.60 


2.17 5.53 


6.59 


1.51 3.08 


3.82 


1.04 


2.37 


1.85 


36.10 


1887 


. 1.49 


3.38 


2.66 


2.34 4.25 


1.01 


2.87 2.13 


2.79 


.82 


5.62 


4.13 


33.49 


1888 


. 2.70 


2.47 


3.37 


2.17 5.34 


7.09 


2.36 3.56 


1.28 


2.60 


3.20 


2.34 


38.48 


1889 


. 1.97 


1.41 


1.69 


.71 7.36 


6.53 


5.70 1.93 


4.26 


2.06 


4.47 






1904... 


. 3.22 


.91 


7.18 


3.42 3.23 


1.43 


4.10 4.56 


4.13 


.46 


.09 


1.23 


33.96 


1905 


. 2.00 


1.57 


1.86 


2.22 4.40 


3.46 


8.06 1.34 


1.14 


4.21 


1.52 


2.14 


33.92 


1906... 


. 2.88 


1.80 


4.90 


2.23 2.64 


2.88 


1.34 3.41 


4.09 


1.58 


3.50 


3.11 


34.36 


1907 


. 4.99 


.48 


3.88 


2.22 3.82 


4.40 


5.63 4.60 


1.57 


1.30 


1.92 


3.22 


38.03 


1908 


.1.38 


5.32 


2.54 


5.91 13.26 


3.51 


2.40 2.62 


2.00 


.11 


3.34 


1.50 


43.89 


1909 


. 2.42 


4.16 


1.94 


9.23 5.49 


3.95 


6 . 80 1 . 20 


2.94 


2.76 


3.73 


2.25 


46.87 


1910 


.1.73 


2.84 


.43 


2.83 6.32 


2.73 


5 . 68 3 . 55 


4.33 


2.61 


4.65 


1.82 


39.52 


1911... 


. 2.22 


1.91 


1.87 


4.50 4.46 


1.49 


1.92 4.18 


14.76 


3.78 


2.80 


1.56 


45.45 


1912 


.1.26 


2.15 


5.08 


7.71 2.57 


3.62 


6.98 5.04 


1.27 


1.92 


1.57 


.68 


32.85 


1913 


. 4.86 


1.86 


6.87 


2.46 .41 


2.18 


.92 2.12 


3.20 


4.26 


4.28 


.60 


34.02 


1914 


. 2.05 


3.02 


1.51 


2.77 .35 


2.58 


1.05 5.78 


2.58 


2.26 


1.25 


2.92 


28.12 


1915 


. 2.11 


1.87 


.87 


2.30 8.80 


5.87 


8.19 8.28 


3.02 


.81 


2.19 


3.97 


48.28 


1916 . . 


. 9.13 


1.02 


1.33 


2 . 23 2 . 97 


4.76 


1.52 2.21 


5.38 




1.63 


4.44 




1917 


1 35 


1 13 


3 59 


3 70 6 96 


6 68 


2 74 4 04 




3 64 


02 


1 04 




1918 


.2.19 


2.59 


1.29 


7.75 4.81 


4.86 


4.51 3.55 


7.03 


2.98 


2.48 


3.76 


47.80 


1919 


. .29 


1.90 


4.12 


1.07 6.33 


7.91 


3.98 2.70 


3.52 


9.97 


4.04 


.51 


46.34 


1920 


. 1.11 


1.44 


5.86 


3.54 7.77 


1.63 


3.17 2.89 


2.38 


2.47 


.93 


2.90 


36.09 


1921 


. 1.57 


.96 


6.37 


4.00 1.85 


7.47 


2.89 5.22 


7.39 


1.31 


3.57 


3.29 


45.89 


1922 


. 1.31 


1.05 


9.05 


8.09 3.94 


3.83 


3.36 1.09 


.51 


1.89 


2.89 


2.93 


39.94 


1923 


. 1.44 


1.55 


5.82 


2.99 3.15 


2.90 


2.48 4.22 


6.27 


3.56 


1.96 


4.76 


41.10 


1924 


. 2.93 


1.94 


3.26 


2.91 4.73 


5.65 


1.87 6.46 


3.91 


.70 


1.67 


5.53 


41.56 


1925 


.1.12 


2.17 


4.86 


1.88 .98 


3.69 


2.22 3.60 


1.91 


2.58 


3.58 


1.80 


30.39 


1926... 


. 1.95 


3.00 


2.15 


3.25 2.78 


3.74 


.55 1.57 


13.66 


5.07 


1.75 


1.77 


41.24 


1927 


. 2.12 


.58 


4.76 


6.20 9.92 


4.08 


4.15 5.76 


7.25 


2.94 


5.70 


2.66 


56.12 


1928 


. 1.72 


3.23 


1.68 


3.92 3.25 


6.08 


3.46 2.48 


2.00 


4.08 


2.25 


3.09 


37.24 


1929 


. 3.15 


.60 


4.35 


5.96 8.78 


4.63 


4.01 1.46 


1.35 


3.40 


1.59 


4.14 


43.42 


1930 


. 6.44 


1.83 


2.00 


3.08 .73 


3.86 


.73 2.48 


2.54 


2.07 


1.41 


.34 


27.51 


1931 


.25 


1.64 


2.80 


3.40 4.80 


1.50 


6.38 2.53 


6.65 


3.95 


4.50 


2.66 


41.06 


1932 


. 2.88 


1.95 


1.53 


2.18 1.72 


4.70 


1.75 5.35 


2.06 


3.35 


2.08 


3.83 


33.38 


1933 


. 2.27 


2.15 


3.80 


4.30 9.92 


1.75 


1.18 3.48 


4.81 


3.57 


1.17 


2.23 


40.63 


1934 


. 2.03 


1.61 


3.12 


1.79 1.26 


2.50 


4.70 8.64 


5.70 


1.21 


5.79 


2.29 


40.64 


1935 


. 2.10 


1.08 


3.98 


1.99 9.05 


3.97 


3.90 .82 


4.89 


2.24 


4.06 


1.10 


39.19 


1936 


. 1.85 


2.81 


3.50 


3.82 3.09 


1.27 


2.30 1.76 


5.01 


3.48 


2.62 


3.50 


35.01 


1937 


. 6.35 


2.07 


1.37 


4.71 2.20 


7.08 


3.85 1.24 


1.89 


6.41 


1.80 


2.55 


41.52 


1938 


.1.65 


3.18 


9.73 


3.23 4.75 


3.34 


5.67 2.90 


2.32 


1.84 


1.58 


2.74 


42.93 


1939 


. 3.98 


3.71 


3.93 


6.32 2.04 


7.99 


2.32 10.00 


.86 


1.56 


1.63 


1.74 


in. ox 


1940 


. 1.73 


1.72 


1.95 


6.18 5.10 


2.25 


2.58 3.74 


.84 


2.52 


2.84 


2.41 


33.86 


1941... 


. 2.09 


.90 


.87 


3.61 3.30 


4.38 


1.01 1.98 


4.75 


10.39 


3.83 


1.39 


38.50 


1942 


.1.19 


3.55 


4.24 


2.82 3.76 


9.30 


6.10 2.30 


2.90 


2.19 


7.18 


3.48 


49.01 


1943 


. .79 


.76 


3.11 


2.94 10.33 


3.37 


2.86 .45 


2.13 


2.50 


1.94 


2.65 


33.83 


1944 


T 


2.57 


3.03 


9.05 4.04 


3.59 


1.86 4.70 


2.89 


1.22 


2.38 


1.84 


37.17 


1945 


. .95 


2.20 


8.63 


5.85 6.26 


7.47 


1.19 4.64 


7.02 


2.34 


3.62 


1.87 


52.04 


1946 


. 1.64 


2.75 


2.25 


1.83 8.75 


4.22 


4.12 4.13 


1.39 


2.77 


5.40 


2.70 


41.95 


Aver 


. 2.37 


2.04 


3.57 


3.83 4.84 


4.25 


3.38 3.68 


3.94 


2.87 


2.84 


2.53 


40.14 



268 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Inches) 



Year 


Jan. 


Feb. Mar. 


Apr. 


May 


June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ANNA 


, Union county 8 


1875 


. . .91 


2.71 5.88 


4.09 


7.98 


7.11 11.09 


2.01 


.38 


2.09 


5.25 


1.51 


51.01 


1876... 


.13.25 


2.48 8.82 


4.48 


5.01 


7.76 4.46 


9.41 


3.14 


1.40 


2.02 


.78 


63.01 


1877 


, . 1.80 


.70 3.87 


4.75 


4.45 


7.12 1.64 


3.47 


5.95 


5.33 


4.58 


4.78 


48.44 


1878 


. 3.16 


1.86 2.28 


5.66 


5.73 


3.91 2.82 


3.66 


2.35 


4.25 


3.08 


4.88 


43.64 


1879 


. 1.70 


2.10 2.39 


1.48 


2.65 


7.02 4.46 


12.51 


1.40 


5.75 


4.93 


5.59 


51.98 


1880 


,. 4.58 


5.38 4.20 


4.67 


7.27 


4.82 3.78 


2.20 


3.48 


4.54 


4.28 


3.29 


52.49 


1881... 


. 2.79 


5.34 1.99 


2.29 


2.57 


5.35 


.38 


1.91 


6.51 


6.10 


2.17 


37.40 


1882 


. 4.39 


8.17 4.52 


4.09 


9.77 


3.04 3.09 


4.19 


3.47 


2.06 


6.04 


2.97 


55.80 


1883 


. 2.25 


8.19 3.93 


5.75 


6.64 


8.21 2.86 


4.02 


.51 


7.21 


6.85 


5.14 


61.56 


1884 


. 2.01 


5.38 4.05 


3.80 


4.99 


7.44 5.49 


2.65 


3.33 


1.42 


2.54 


9.57 


52.67 


1885 


. 4.64 


1.23 1.43 


2.69 


2.24 


6.89 2.19 


4.13 


4.54 


3.43 


1.80 


2.92 


38.13 


1886 


3.18 


2.33 4.05 


3.45 


3.71 


3.84 1.16 


2.63 


4.33 


.74 


6.65 


3.25 


39.32 


1896 




1.55 3.72 


2.89 


9.30 


5.50 3.76 


2.24 


2.38 


2.32 


3.75 


.89 




1897 


. 4.47 


4.47 12.64 


8.31 


2.00 


4.67 2.99 


2.05 


1.06 


.77 


5.13 


5.15 


53.71 


1898 


. 4.20 


1.37 14.16 


4.28 


5.76 


7.83 7.35 


4.81 


5.21 


6.42 


1.60 


1.69 


64.68 


1899 


. 5.76 


3.52 4.04 


4.17 


6.06 


4.26 4.23 


1.42 


2.44 


4.65 


1.91 


4.17 


46.63 


1900 


. 1.70 


4.09 2.28 


2.70 


6.57 


9.52 4.52 


.51 


2.55 


2.20 


4.00 


2.90 


43.54 


1901 


. 1.34 


2.45 5.73 


3.74 


1.69 


2.57 1.20 


5.96 


.77 


1.97 


1.28 


5.68 


34.38 


1902 


. 1.52 


2.53 4.22 


3.04 


3.13 


2.78 .82 


4.45 


3.42 


.84 


4.92 


6.36 


Us.iu 


1903 


. 2.26 


4.76 5.87 


3.54 


3.16 


2.25 3.22 


1.85 


1.31 


3.59 


2.22 


2.82 


36.85 


1904 


. 4.05 


2.90 6.75 


4.28 


2.54 


5.84 2.83 


4.73 


9.11 


.90 


.32 


2.55 


46.80 


1905 


. 3.45 


2.10 3.03 


4.83 


4.34 


2.10 9.55 


2.85 


2.94 


6.46 


2.24 


3.50 


47.39 


1906 


. 6.45 


2.36 6.70 


1.17 


.67 


4.77 3.80 


5.07 


8.72 


1.67 


7.75 


5.50 


54.63 


1907 


. 5.82 


1.56 2.95 


3.11 


5.44 


2.77 4.18 


5.41 


.79 


4.22 


5.17 


3.10 


44.52 


1908 


. 3.86 


8.06 4.60 


8.10 


5.16 


1.70 3.37 


3.75 


1.92 





4.90 


1.07 


46.49 


1909 


. 2.25 


8.26 5.39 


9.08 


4.33 


1.75 10.93 


1.39 


9.17 


.86 


4.31 


3.14 


60.86 


1910 


. 2.43 


10 


6.19 


3.66 


4.29 10.82 


1.89 


2.10 


11.43 


.26 


2.60 




1911 


. .65 


3.27 2.22 


12.07 


1.31 


3.59 1.60 


6.52 


6.13 


2.11 


4.34 


2.96 


46.77 


1912 


. 2.90 


1.43 3.37 


6.85 


3.64 


3.71 


3.18 


4.83 


2.28 


2.65 


.79 




1913 


. 8.13 


.85 7.94 


3.19 


1.91 


.90 3.77 


1.45 


4.81 


6.97 


3.47 


1.47 


44.86 


1914 


. 2.43 


4.68 


3.47 


1.21 


2.05 .54 


4.06 


3.16 


3.61 


1.01 


3.67 




1915 


. 4.46 


2.49 .87 


.73 


5.07 


3.58 3.80 


8.81 


3.33 


.65 


2.52 


7.67 


43.98 


1916 


. 9.54 


1.78 1.06 


2.62 


4.29 


7.80 .62 


3.65 


3.09 


2.13 


2.49 


4.22 


43.29 


1917 


. 4.54 


1.67 3.68 


7.67 


3.78 


2.89 3.27 


6.26 


.70 


2.14 


2.65 


1.59 


40.84 


1918 


. 4.32 


.44 .75 


6.06 


9.42 


3.10 .40 


2.05 


5.32 


3.11 


2.88 


8.51 


46.36 


1919 


. .94 


1.69 4.97 


2.82 


3.84 


2.73 .85 


4.62 


3.07 


10.50 


5.65 


1.47 


43.15 


1920 


. 4.08 


1.29 7.16 


2.98 


9.65 


2.63 2.51 


3.68 


.77 


3.09 


1.00 


4.53 


43.37 


1921 . . . 


. 2.95 


2.92 6.16 


5.69 


2.61 


5.46 1.54 


7.38 


5.62 


1.04 


7.27 


2.95 


51.59 


1922 


.1.53 


1.78 10.32 


4.71 


3.05 


1 . 84 7 . 47 


2.92 


2.83 


3.23 


2.70 


3.27 


45.65 


1923 


. 5.80 


4.17 4.42 


4.51 


5.84 


2.31 1.33 


8.63 


4.26 


3.62 


2.97 


6.81 


54.67 


1924 


. 2.44 


1.74 2.10 


2.67 


6.87 


4.57 6.74 


2.34 


3.62 


T 


2.16 


3.79 


39.04 


1925 


. 1.52 


2.61 2.95 


3.27 


.30 


6.16 1.05 




9.36 


6.13 


5.68 






1926... 


. 3.83 


1.97 2.93 


2.37 


1.39 


1.08 . .93 


4.50 


3.05 


3.62 


5.07 






1927 


. 6.70 


.76 6.87 


9.52 


8.43 


5.72 5.65 


1.36 


4.95 


2.71 


5.64 


6.62 


64.93 


1928 


. 1.73 


3.57 1.85 


6.10 


2.63 


18.21 .52 


4.64 


T 


8.19 


6.00 


3.32 


56.76 


1929 


. 6.95 


2.83 3.53 


4.95 


6.94 


5.92 3.39 


4.47 


4.76 


1.84 


3.25 


4.22 


53.05 


1930 


. 8.57 


2.74 2.36 


1.13 


1.87 


2.05 .77 


.57 


6.75 


1.87 


2.58 


1.49 


32.75 


1931... 


.1.10 


2.81 4.57 


4.59 


7.29 


1.71 .42 


5.57 


2.44 


2.32 


7.96 


3.59 


44.37 


1932 


. 5.48 


2.79 3.72 


3.91 


1.96 


2.40 4.05 


8.46 


6.26 


6.05 


2.11 


7.89 


55.08 


1933 


. 2.73 


3.27 6.77 


4.89 


12.09 


.25 4.81 


2.60 


3.80 


3.11 


1.32 


2.46 


48.10 


1934 


. .97 


1.62 2.90 


3.21 


1.74 


2.81 1.90 


4.45 


9.36 


3.54 


9.28 


3.11 


44.89 


1935 


. 4.20 


1.62 10.94 


2.61 


7.22 


11.11 3.77 


1.83 


2.71 


4.37 


3.69 


1.70 


55.77 


1936... 


.92 


2.63 3.50 


3.84 


1.10 


1.82 2.07 


.34 


5.83 


3.69 


3.23 


3.58 


32.55 


1937 


.12.71 


3.09 1.17 


6.62 


5.13 


6.23 3.55 


.88 


4.86 


6.11 


1.79 


2.49 


54.63 


1938 


. 3.72 


2.90 5.00 


2.99 


3.94 


6.58 3.50 


4.03 


1.39 


1.21 


2.66 


1.88 


39.80 


1939 


. 5.54 


7.35 5.67 


7.58 


4.14 


4.70 2.91 


2.38 


1.07 


3.68 


1.71 


1.57 


48.30 


1940 


. 1.84 


5.44 3.67 


7.81 


2.71 


3.37 3.68 


2.35 


2.52 


.46 


5.09 


4.36 


43.30 



Data from 1896 thru February, 1914, are for Cobden, 5 miles north of Anna. 



1949] CLIMATE OF ILLINOIS: APPENDIX B 269 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


M 


!ar. 


Apr. May June July Aug. Sept. 


Oct. 


N 


ov. 


D 


ec. 


Annual 










j 


VNNA, Union county, concluded 














1941... 


. 3.87 


1.07 


1, 


oo 


3.03 2.93 .58 3.26 8.87 2.71 


8.71 


2 


S4 


4 


77 


44.30 


1942 


. . 4.08 


4.98 


4 


(IS 


4.41 4.98 8.88 2.69 8.06 1.43 


3.38 


8 


42 


3 


(i!) 


58.99 


1943 


. . .35 


1.49 


0. 


oo 


3.32 10.24 4.95 2.28 3.56 5.55 


1.95 


2 


. :{5 


2 


.92 


45.56 


1944 


, . 1.35 


4.45 


4 


xr> 


6.54 6.75 1.92 2.31 4.04 3.07 


.12 


2 


22 


1 


03 


41.65 


1945 


,. 2.72 


8.47 


13 


oo 


10.16 4.87 9.83 1.28 3.81 8.45 


3.03 


3 


,81 


1 


til 


71.73 


1946 


, . 3.68 


4.42 


2, 


,18 


4.17 7.78 1.30 4.19 7.72 2.62 


2.01 


4 


.tvt 


3 


.03 


47.74 


Aver 


3.77 


3.21 


4, 


61 


4.60 4.69 4.62 3.39 4.03 3.70 


3.42 


3 


.70 


3 


.60 


47.43 












BENTON, Franklin county 8 














1912 




















66 




1913 


, . 8.17 


1.20 


9, 


os 


2.99 2.42 1.23 1.79 2.74 3.88 


4.76 


3 


,3ft 


1 


.27 


43.48 


1914 


. . 2.46 


3.54 


3, 


87 


1.66 .47 1.81 .22 5.06 4.47 


4.05 




55 


3 


>7 


30.93 


1915 


. 4.74 


2.39 




81 


.51 8.03 5.55 4.00 8.44 2.79 


.76 


2, 


21 


5 


f.r> 


45.28 


1916 


. . 9.36 


1.38 


1, 


86 


1.28 3.90 6.97 4.06 7.02 2.71 


2.60 


1 


63 


?, 


r,: J , 


45.40 


1917 


.. 5.21 


.51 


1, 


so 


5.83 3.95 3.17 3.19 2.38 .57 


2.28 


2 


,06 




,96 


31.90 


1918 


, . 4.14 


.75 




70 


6.63 5.62 1.30 .31 4.90 2.28 


2.47 


3 


0:1 


5 


21 


37.43 


1919 


. 1.12 


1.34 


3 


02 


4.84 4.93 5.04 .60 3.32 1.43 


11.26 


4 


63 


1 


OS 


43.11 


1920 


. 2.82 




4. 


B8 


2.49 6.62 .79 2.82 1.70 1.57 


2.42 


1 


,36 


4 


.10 




1921... 


. 1.98 


1.64 


4 


80 


4.10 1.87 1.92 2.04 5.95 7.81 


1.00 


A 


oo 


3 


56 


42.81 


1922 


,. 1.15 


1.98 


0, 


64 


4.53 1.86 1.09 1.39 1.96 .28 


2.88 


1 


77 


7 


,76 


36.29 


1923 , 


. 2.50 


3.61 






3.28 6.86 2.09 7.20 4.96 


3.64 


ft 


48 


5 


41 




1924 


. 1.71 


1.14 


2, 


OS 


2.79 4.55 10.15 2.81 1.46 2.94 


.19 


1 


41 


3 


"4 


34.47 


1925 


. 1.26 


2.53 


a. 


14 


2.66 2.48 4.23 .75 1.55 7.07 


6.29 


4 


,23 


1 


.27 


36.46 


1926 


. 1.87 


2.60 


2 


74 


2.61 .86 1.01 1.32 6.40 4.77 


6.36 


3 


96 


1 


96 


36.46 


1927 


. . 5.87 


.74 


6. 


20 


10.44 7.55 4.29 3.49 2.06 4.14 


2.33 






5 


,38 




1928 


, . 1.60 


2.35 


1 


33 


3.17 1.46 9.79 3.01 5.97 .58 


5.64 


3 


60 


?, 


5S 


40.98 


1929 


, . 5.42 


2.45 


a 


36 


3.43 7.08 5.02 2.52 2.49 4.27 


1.88 


2 


44 


6 


Of 


44.40 


1930 




3.78 


i. 


89 


1.12 1.40 1.53 .49 .23 6.30 


1.74 


1, 


64 


1, 


20 




1931... 


.77 


1.85 






. 4.28 1.91 2.27 5.73 6.26 


2.98 


fl 


31 


4 


73 




1932 


. . 4.92 


1.16 






1.71 2.41 3.03 4.39 5.49 


4.37 






(i 


.12 




1933 


.. 3.10 


1.52 


3 


75 


3.18 9.34 .54 4.96 .... 1.90 


2.91 




76 








1934 


, . 1.38 




a 


(if) 


3.07 3.57 1.92 2.95 8.45 


1.28 


7 


78 


2 


01 




1935 


. 3.32 


.75 


8. 


28 


3.42 5.46 5.50 1.03 2.63 1.87 


3.14 


3, 


98 


1, 


29 


40.62 


1936... 


.90 


1.66 


1 


on 


2.82 1.08 2.66 .27 .08 2.89 


5.40 


3 


,77 


3 


,37 


26.53 


1937 


..11.91 


1.77 


1 


,03 


5.30 3.13 4.23 1.77 1.00 4.12 


4.77 


1, 


68 


2 


,63 


43.29 


1938 


. . 2.40 


3.16 


4 


ss 


1.83 5.86 4.22 3.51 2.75 2.30 


.67 


2 


so 


1 


73 


36.11 


1939 


, . 4.99 


3.73 


4 


80 


5.94 2.36 5.15 3.84 2.92 2.20 


1.14 


1, 


68 


2 


03 


40.28 


1940 


. . 1.44 


4.21 


1, 


37 


6.03 3.66 .93 2.24 1.45 .74 


.26 


3. 


09 




89 


27.79 


1941... 


. . 2.33 


.78 


1 


,u 


2.04 2.97 4.03 1.97 2.59 2.96 


10.11 


2 


,87 


2 


,90 


36.20 


1942 


.. 2.45 


3.64 


3 


,42 


2.18 3.93 4.77 3.80 3.88 1.08 


2.23 


4 


.82 


1 


.74 


37.44 


1943 


. . .45 


.97 


2, 


,98 


3.23 7.90 5.25 2.09 2.26 6.24 


2.03 


1 


78 


i 


,88 


37.06 


1944 


. . .48 


2.81 


3 


.'i 


4'.97 3.45 .96 1.99 8.78 1.09 


1.08 


1 


,26 


1 


,97 


32.10 


1945 


. . 1.39 


6.43 


11 


30 


8.41 4.67 9.97 1.21 7.31 7.81 


2.56 


3. 


14 


1, 


52 


65.78 


1946 


. . 2.63 


3.93 


1 


,03 


3.11 8.89 1.77 2.86 15.80 1.93 


2.21 


4 


,00 


2 


,53 


50.69 


Aver 


. . 3.22 


2.25 


3 


.58 


3.75 4.24 3.67 2.26 4.14 3.53 


3.43 


2 


.96 


2 


.93 


39.96 












CAIRO, Alexander county 














1871... 










. 5.97 2.22 2.34 


3.81 


2 


.93 


4 


.56 




1872 


. . 1.44 


2.26 


2 


or, 


4.52 5.00 1.79 3.45 .19 2.56 


1.16 




,67 


1 


.56 


26.55 


1873 


. . 5.03 


6.68 


3 


"7 


5.54 5.07 4.45 1.68 2.48 4.09 


5.28 


3 


04 


I 


. L'.'l 


50.86 


1874 


.. 3.11 


7.38 


B 


68 


7.57 1.55 2.20 .52 2.79 3.14 


1.54 


7 


,84 


a 


.SI 


47.63 


1875 


. . 3.21 


2.17 


6 


,78 


3.01 3.11 8.41 9.88 3.32 .16 


1.76 


7 


,96 


3 


,21 


52.93 


1876... 


. .15.05 


2.34 


9 


XI 


2.67 5.84 6.62 3.44 5.24 .73 


2.14 




,96 




,73 


55.60 


1877 


. . 1.93 


.25 


3 


62 


3.87 2.13 4.88 5.63 1.58 3.15 


3.12 


4 


,76 


4, 


. .-,:, 


39.47 


1878 


. . 3.05 


1.94 


2 


07 


5.61 4.41 4.61 2.81 3.45 2.99 


2.59 


3 


.so 


3 


. :>;-, 


41.76 


1879 


. . 2.81 


2.03 


1 


96 


3.03 2.79 8.70 1.37 7.05 .93 


3.87 


3 


2.-, 


6 


. on 


45.41 


1880 


, 4.56 


5.01 


4 


. r>2 


3.25 4.64 2.92 4.34 2.61 4.55 


6.96 


3 


.98 


2 


.22 


49.56 



> Data prior to June, 1919, are for Ewing, 7 miles northeast of Benton. 



270 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


Jiy 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CAIRO, Alexander 


county, continued 


1881... 


. . 3.56 


4.97 


1.33 


3.62 2.44 1.81 


.18 


.11 


2.74 


2.74 


4.98 


3.70 


32.18 


1882 


. . 6.35 


10.14 


4.22 


4.14 10.22 3.34 


5.25 


3.46 


3.28 


2.57 


5.96 


2.65 


61.58 


1883 


. . 2.74 


8.52 


2.14 


5.64 3.85 6.15 


7.95 


1.73 


.34 


6.97 


4.36 


2.18 


52.57 


1884 


. . 2.32 


5.58 


4.20 


3.65 4.57 2.95 


7.34 


2.74 


5.02 


1.89 


2.41 


8.99 


51.66 


1885 


. . 3.49 


1.48 


1.08 


1.43 3.21 4.63 


.82 


2.40 


4.76 


2.89 


2.79 


3.01 


31.99 


1886... 


. . 3.82 


2.54 


2.84 


6'.64 2.98 4.87 


1.01 


2.84 


2.52 


.45 


5.73 


1.74 


37.98 


1887 


. . 2.15 


4.60 


2.18 


2.09 1.37 2.34 


1.42 


1.10 


1.67 


.38 


3.33 


4.12 


26.75 


1888 


. . 2 . 80 


2.51 


4.91 


3.08 3.58 5.48 


3.32 


5.45 


.28 


3.24 


4.85 


2.40 


41.90 


1889 


. . 4.61 


1.57 


1.40 


.97 1.91 8.07 


5.15 


1.10 


3.82 


2.81 


5.56 


.77 


37.74 


1890 


. . 6.32 


7.57 


6.14 


3.76 4.19 1.45 


1.62 


5.16 


2.27 


3.04 


6.08 


2.91 


50.51 


1891... 


. . 3.95 


3.20 


5.86 


1.55 2.48 3.97 


2.21 


4.77 


.29 


.49 


7.30 


3.49 


39.56 


1892 


. . 2.01 


3.32 


2.29 


5.28 5.55 3.55 


1.73 


5.23 


.90 


.74 


4.20 


3.91 


38.71 


1893 


, . 1 . 26 


3.93 


2.09 


6.91 6.70 7.59 


1.23 


1.64 


6.83 


6.26 


2.75 


1.60 


48.79 


1894 


,. 2.18 


4.77 


4.14 


2.54 2.79 1.04 


1.92 


1.68 


2.69 


1.47 


1.42 


3.87 


30.51 


1895 


. 3.77 


.39 


2.76 


2.75 1.48 4.86 


5.97 


.71 


1.86 


.50 


5.27 


3.25 


33.57 


1896... 


. 1.45 


1.69 


3.97 


2.57 10.82 4.73 


2.31 


1.78 


2.95 


1.73 


4.18 


1.18 


39.36 


1897 


. 3.89 


3.95 


7.50 


6.49 1.12 6.87 


2.76 


.89 


.53 


.91 


5.50 


3.69 


44.10 


1898 


. 6.26 


1.18 


9.20 


2.13 5.36 1.73 


5.67 


3.56 


6.11 


4.64 


1.55 


1.27 


48.66 


1899 


. . 5.46 


2.51 


3.59 


2.33 5.27 5.74 


3.90 


1.06 


2.25 


3.42 


3.05 


3.84 


42.42 


1900 


. 2.00 


3.20 


1.29 


1.79 3.98 10.07 


3.13 


.27 


2.40 


1.70 


4.63 


2.43 


36.89 


1901... 


. 1.52 


1.78 


3.62 


2.70 2.00 .91 


4.57 


3.83 


1.56 


3.40 


1.77 


4.02 


31.68 


1902 


. . 3.42 


1.37 


2.12 


3.36 2.13 2.47 


.40 


3.26 


3.29 


.79 


3.51 


6.95 


33.07 


1903 


. 2.35 


4.19 


4.28 


1.85 3.52 2.37 


4.89 


.81 


.75 


1.98 


2.07 


3.85 


32.91 


1904 


. 4.05 


1.70 


4.60 


2.98 2.03 3.61 


4.20 


2.59 


1.91 


1.20 


.15 


2.98 


32.00 


1905 


. 3.41 


1.98 


2.84 


2.19 4.11 6.00 


4.43 


3.79 


.69 


3.00 


3.64 


3.40 


39.48 


1906 


. 6.17 


1.42 


6.07 


1.29 .46 2.33 


3.86 


5.73 


4.77 


.44 


7.88 


6.50 


46.92 


1907 


. . 7.77 


3.58 


3.39 


3.81 6.78 2.95 


3.92 


2.43 


1.14 


2.90 


4.43 


2.48 


45.58 


1908 


. 2.84 


6.98 


1.88 


6.63 4.90 3.15 


1.92 


4.28 


1.01 


.02 


3.32 


1.54 


38.47 


1909 


. 2.54 


6.76 


7.10 


4.85 3.96 1.88 


3.13 


.01 


5.66 


.74 


2.58 


3.84 


43.05 


1910 


. 2.63 


3.29 


1.39 


6.78 2.86 2.05 


7.59 


2.90 


.93 


11.57 


.55 


3.39 


45.93 


1911... 


. 1.56 


2.66 


.77 


5.77 .22 2.08 


1.99 


2.82 


5.15 


1.08 


3.30 


2.71 


30.11 


1912 


. 4.13 


2.41 


5.29 


5.91 2.51 4.69 


1.90 


2.28 


2.33 


3.64 


.62 


1.54 


37.25 


1913 


.11.65 


2.08 


7.23 


2.27 .87 1.07 


4.19 


1.54 


2.22 


5.50 


3.14 


.84 


42.60 


1914 


. 1.64 


3.85 


3.31 


2.64 2.66 .92 


.35 


2.52 


3.73 


2.45 


.64 


3.51 


28.22 


1915 


. 4.85 


2.90 


.75 


1.01 4.13 2.42 


3.51 


10.28 


4.16 


1.20 


4.18 


6.61 


46.00 


1916... 


. 8.11 


.83 


1.65 


1.66 3.06 8.00 


.21 


2.28 


2.07 


1.29 


1.70 


4.46 


35.32 


1917 


. 4.32 


1.54 


3.60 


6.96 1.72 3.15 


4.74 


6.36 


1.40 


1.42 


2.91 


2.31 


40.43 


1918 


. 3.47 


1.03 


1.56 


6.18 5.15 3.33 


.74 


1.62 


5.29 


3.07 


1.34 


6.12 


38.90 


1919 


.1.15 


1.25 


6.61 


4.78 3.53 4.61 


1.51 


3.41 


1.80 


5.97 


6.47 


2.16 


43.25 


1920 


. 3.48 


1.68 


3.94 


3.35 5.02 2.10 


2.82 


2.48 


2.19 


2.09 


.70 


5.10 


34.95 


1921... 


. 2.27 


3.72 


4.26 


3.67 1.68 1.83 


.98 


4.29 


4.80 


.82 


11.18 


3.02 


42.52 


1922 


. 1.48 


2.81 


8.40 


3.35 2.65 1.44 


4.49 


.98 


1.41 


2.54 


1.98 


3.27 


34.80 


1923 


. 7.01 


2.57 


5.00 


4.02 5.10 3.30 


2.01 


2.48 


3.48 


2.43 


3.59 


4.92 


45.91 


1924 


. 2.67 


1.47 


1.28 


2.49 5.64 4.78 


3.73 


2.84 


2.84 


.14 


1.81 


3.76 


33.45 


1925 


. 1.21 


2.82 


2.19 


1.66 .86 5.95 


2.08 


.60 


6.21 


10.53 


4.59 


.57 


39.27 


1926... 


. 3.50 


1.78 


2.79 


3.02 2.26 .60 


3.22 


12.02 


4.30 


3.43 


4.49 


4.15 


45.56 


1927 


. 8.16 


1.36 


8.07 


9.59 10.18 5.89 


2.63 


1.57 


7.33 


2.18 


4.52 


2.66 


64.14 


1928 


. 1.65 


2.58 


1.23 


5.76 1.75 15.70 


1.43 


3.95 


.14 


5.13 


3.30 


3.26 


45.88 


1929 


. 4.98 


4.20 


3.54 


2.97 5.19 3.76 


1.28 


3.29 


5.44 


1.08 


2.51 


4.12 


42.36 


1930 


. 9.44 


2.53 


2.54 


.79 2.49 1.59 


.04 


.76 


2.65 


1.05 


1.83 


1.97 


27.68 


1931 . . . 


. 1.77 


3.38 


4.20 


4.00 2.99 3.13 


1.97 


7.14 


1.19 


2.66 


5.35 


4.15 


41.93 


1932 


. 7.02 


4.43 


4.19 


3.28 .50 1.78 


2.58 


3.79 


5.67 


3.56 


2.65 


6.88 


46.33 


1933 


. 3.78 


3.77 


6.39 


3.68 9.02 .91 


7.49 


4.41 


7.81 


2.75 


1.23 


2.60 


53.84 


1934 


. 1.28 


2.01 


3.86 


1.69 1.59 .92 


3.41 


2.70 


6.02 


2.68 


8.45 


3.30 


37.91 


1935 


. 4.74 


1.34 


12.00 


3.69 4.83 7.51 


1.86 


5.99 


1.23 


5.00 


1.70 


1.99 


51.88 


1936... 


.95 


2.01 


4.04 


3.79 1.72 2.18 


2.64 


.12 


3.57 


3.81 


2.78 


4.06 


31.67 


1937 


.15.45 


1.57 


1.36 


4.39 4.92 3.06 


1.53 


.42 


3.18 


4.47 


1.99 


3.04 


45.38 


1938 


. 4.27 


2.88 


12.40 


1.27 2.71 3.32 


7.47 


1.56 


.99 


1.16 


3.25 


1.35 


42.63 


1939 


. 4.15 


7.70 


4.78 


4.95 3.62 2.56 


1.36 


1.22 


1.20 


1.47 


2.22 


1.75 


36.98 


1940 


. 2.64 


3.51 


3.25 


7.92 1.92 3.17 


1.39 


.77 


1.75 


.73 


4.09 


2.92 


34.06 



1949] CLIMATE OF ILLINOIS: APPENDIX B 271 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 

Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual 
CAIRO, Alexander county, concluded 



1941 


2 33 


71 


58 


2 06 


1 77 1 18 


2 54 


4 06 


1 58 


7 66 1 42 


3 90 


29 79 


1942 


. . 3 12 


4 52 


3 07 


4 19 


3 21 3 51 


62 


5 05 


96 


1 96 5 23 


2 18 


37 62 


1943 


. . . .33 


1.11 


5.06 


3.24 


6 11 2 69 


2 08 


1 48 


4 26 


1 61 1 17 


2 56 


31 70 


1944 


. . . .74 


4.63 


5.12 


6.50 


3 . 79 2 . 04 


1 11 


4 40 


1 86 


63 2 60 


4.89 


38.31 


1945... 


.. 2.13 


5.92 


9.22 


8.27 


6.94 10.17 


.84 


3.28 


6.30 


1.97 5.12 


1.82 


61.98 



1946 4.80 5.73 1.74 4.6111.15 3.01 2.68 5.25 1.27 2.69 6.01 3.54 52.47 

Aver 3.91 3.23 4.11 3.91 3.79 3.89 3.00 3.00 2.86 2.75 3.61 3.33 41.39 

CAPE GIRARDEAU, Cape Girardeau county, Missouri 



1891 


6 90 


2 61 


3 65 


90 


3 95 


4 20 


10 


2 95 





1 25 


7 34 


1.90 


35.75 


1892 


1 50 


2 97 


3 50 


4 00 


3 89 


1 50 


2 10 


3 95 


35 


2.80 


3.32 


2.00 


31.88 


1893 


. .40 


3 27 


2 00 


5 73 


3 50 


4.65 


1 25 


1 00 


2.60 


2.30 


1.10 


1.01 


28.81 


1894 


1 50 


1 00 




















































1918 
1919 


.. 4.00 
2 13 


.42 
2 01 


1.35 
5 60 


6.06 
2 05 


11.17- 
4 76 


2.85 

7 42 


.29 
50 


7 10 


4 [12 


7.92 


2.90 
4.06 


8.86 
1.67 


49.34 


1920 


3 44 


98 


4 71 


2 26 


5 89 


3 22 


3 01 


3 21 


2.07 


3.03 


.63 


3.68 


36.13 


1921 


. . 2.14 


2 63 


5 14 


4 16 


2 77 


3 21 


.41 


4.87 


4.63 


.82 


9.88 


2.34 


43.00 


1922 


. . 2.22 


2.46 


7.80 


3.87 


2 94 


3.01 


7.57 


2.82 


4.04 


2.95 


3.07 


3.49 


46.24 


1923 


. . 5.30 


4.07 


4.61 


3.34 


5.50 


2.12 


1.94 


5.81 


3.12 


2.68 


7.70 


5.40 


46.59 


1924 . . 


2 65 


2 06 


1 89 


2 21 


5 50 


6 21 


3 96 


2.04 


1.83 


.15 


1.75 


3.88 


34.13 


1925 


. . 1 . 34 


2 88 


2 50 


2 80 


.39 


6 77 


1.03 


.68 


8.76 


7.76 


5.95 


.98 


41.84 


1926... 


. . 2.84 


1.91 


3.21 


2.47 


.76 


2.94 


1.41 


5.05 


2.79 


3.30 


4.02 


3.54 


34.24 


1927 


7 18 


1 00 


7 79 


9 39 


10 60 


6 86 


5 62 


4 00 


5.89 


2.91 


4.83 


7.40 


73.47 


1928 


.. 1.75 


3 44 


2 06 


6 89 


4 00 


20 04 


1.79 


5.35 





8.66 


6.32 


2.98 


63.28 


1929 


. . 7 . 06 


3.23 


3 18 


6 02 


7 97 


3.76 


2.93 


3.03 


4.06 


.90 


2.57 


4.22 


48.93 


1930 


. 7 66 


2 52 


1 89 


1 57 


2 61 


1 15 


67 


1.34 


5.56 


1.50 


2.68 


1.40 


30.55 


1931 


. . .82 


2 85 


4 36 


3 70 


6 42 


1 15 


.66 


8.17 


2.76 


2.29 


6.52 


4.09 


43.79 


1932 


. . 5 . 98 


2.85 


3 96 


3 77 


.96 


2.03 


1.52 


4.89 


5.44 


5.05 


2.21 


7.96 


46.62 


1933 


3 02 


3 04 


5 09 


6 27 


10 50 


22 


4 31 


1.81 


5.86 


2.58 


.96 


2.48 


46.14 


1934 . . 


. 1.51 


1 47 


3 19 


2 65 


1 82 


1 22 


1.78 


4.00 


8.23 


2.94 


7.64 


2.26 


38.71 


1935 


. . 4 . 02 


1.37 


10 74 


2 02 


5.18 


6.74 


1.64 


1.97 


4.17 


4.95 


2.38 


1.60 


46.78 


1936... 


.94 


2.07 


2.17 


4.55 


1.54 


.90 


2.47 


T 


3.59 


2.87 


2.24 


3.95 


27.29 


1937 


12 32 


1 62 


1 14 


5 86 


6 01 


6 35 


1.82 


.78 


4.26 


4.19 


2.07 


2.19 


48.61 


1938 


. . 3 . 94 


2 70 


5 40 


1 63 


3 63 


7.17 


5.07 


2.23 


1.46 


.97 


2.36 


1.98 


38.54 


1939 


. . 5 . 24 


5.60 


4.93 


6.51 


2.64 


3.05 


2.68 


2.86 


1.14 


2.77 


1.37 


1.33 


40.12 


1940 


. 1 86 


3 25 


2 45 


5 76 


2 77 


2 73 


.82 


3.52 


.63 


.16 


3.89 


2.87 


30.71 


1941... 


. . 3.16 


.58 


1 45 


3 05 


3 26 


.67 


.87 


4.63 


3.15 


7.44 


2.21 


4.22 


34.69 


1942 


. . 4.02 


4.54 


3.65 


3.78 


5.43 


6.22 


1.29 


6.74 


1.63 


2.88 


8.37 


1.72 


50.27 


1943... 


T 


1 06 


6 23 


2 58 


9 89 


3 33 


1.24 


4.91 


4.74 


1.59 


2.09 


1.61 


39.27 


1944 


. . .58 


3 79 


3.53 


6 53 


4.03 


2.23 


1.78 


5.88 


2.52 


.02 


1.23 


2.92 


35.04 


1945 


1 72 


7 09 


12 75 


9 63 


4 47 


9 11 


2 23 


8.27 


10.76 


3.17 


3.23 


1.15 


73.58 


1946 


. . 3 18 


4 94 


1 75 


4 38 


8 81 


1.30 


3.97 


6.55 


1.45 


1.92 


5.49 


3.04 


46.78 




3 40 


2 68 


4 18 


4 26 


4 80 


4 20 


2 15 


3 88 


3.60 


3.06 


3.82 


3.13 


43.16 































CARBONDALE, Jackson county 



1910.... 
1911 


55 


3.47 
2 79 


.09 
1 85 


3.70 
10 59 


2! 81 
1 47 


8.58 
2 24 


8.58 
2 60 


2.11 
8 01 


5.60 
5 70 


10.27 
3.69 


.25 
3.34 


2.24 
2.50 


45.33 


1912. 


. . . 3 16 


2 84 


6 10 


6 38 


3 04 


4 69 


2 64 


4 68 


5.62 


2.76 


1.90 


.75 


44.56 


1913 


. . . 7.70 


.79 


7 63 


3 00 


2.10 


2 62 


3.35 


1.37 


2.74 


5.73 


3.44 


2.05 


42.52 


1914 


2 41 


5 09 


2 60 


2 42 


1 52 


34 


2 09 


1 84 


3 04 


4.41 


.97 


4.03 


30.76 


1915 


. . . 4.53 


2 17 


92 


77 


8 19 


7 91 


4 42 


10.96 


3.58 


.41 


2.16 


6.88 


52.90 


1916... 


9 69 


1 90 


1 95 


2 39 


3 60 


5.59 


5.59 


5.44 


3.07 


2.96 


2.34 


4.25 


48.77 


1917.... 


. . 4 24 


.89 


4 41 


8 00 


6.98 


3.48 


5.20 


4.19 


.92 


2.87 


3.12 


1.54 


45.84 


1918 


4 32 


50 


84 


6 50 


7 93 


1 46 


.64 


4.71 


5.04 


2.98 


2.54 


4.63 


42.09 


1919... 


87 


1 52 


4 28 


3 56 


7.73 


3.41 


2.33 


2.87 


3.72 


10.11 


5.63 


.90 


46.93 


1920... 


. . 3.62 


.86 


5.93 


4.37 


8.89 


1.59 


6.13 


3.44 


1.81 


2.98 


1.26 


4.30 


45.18 



272 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CARBONDALE, Jackson county, concluded 


1921... 


. . . 2 


<s 


2.28 


4.82 


4.59 2.24 3.01 


1.41 10.73 


8.51 


1.18 


9.56 


3.36 


54.67 


1922 


. . . 1 


4(1 


3.04 


8.59 


4.42 3.25 1.98 


2.05 2.47 


1.73 


3.88 


2.07 


3.86 


38.80 


1923.... 


...3 


26 


3.52 


4.58 


3.64 7.41 1.80 


.48 6.78 


4.21 


3.39 


2.65 


4.60 


46.31 


1924.... 


. . . 1 


M 


1.31 


2.52 


2.74 4.99 7.45 


3.99 3.13 


3.88 


.20 


2.01 


4.10 


38.31 


1925.... 


... 1 


. .->t> 


2.55 


2.90 


2.93 1.80 6.93 


3.16 .72 


6.29 


5.68 


4.51 


1.01 


40.04 


1926... 


.. 2 


.54 


2.23 


3.03 


2,98 1.83 .97 


1.26 4.76 


3.59 


6.00 


3.82 


2.59 


35.60 


1927.... 


. . . 4 


f 


.82 


6.47 


9.'63 8.09 2.98 


6.02 2.24 


6.80 


2.47 


5.96 


4.70 


60.60 


1928 


... 1 


86 


3.48 


1.32 


4.61 3.11 15.72 


1.89 6.69 


.09 


8.47 


4.82 


2.62 


54.68 


1929.... 


... 5 


26 


2.48 


2.77 


5.56 7.19 6.41 


5.24 3.57 


5.90 


2.00 


2.94 


5.57 


54.89 


1930.... 


... 8 


02 


3.44 


2.15 


1.36 1.48 2.16 


1.43 .36 


7.26 


1.42 


1.94 


1.05 


32.07 


1931... 




78 


2.97 


3.38 


4.36 6.28 .34 


2.99 5.28 


3.88 


4.94 


7.96 


4.75 


47.91 


1932.... 


.. 5 


,30 


1.80 


2.90 


3.36 1.02 2.49 


4.00 11.18 


5.47 


5.89 


1.85 


7.07 


52.33 


1933.... 


. . . 4 


to 


2.46 


4.93 


5.01 10.29 .23 


3.41 3.02 


2.67 


2.34 


.84 


1.95 


41.55 


1934.... 


. . . 1 


66 


1.67 


3.55 


3.09 2.62 2.88 


2.33 4.30 


6.57 


2.21 


7.65 


1.78 


40.31 


1935.... 


...3 


13 


1.51 


9.52 


4.14 7.07 15.95 


2.28 2.08 


3.19 


3.52 


3.34 


1.03 


56.75 


1936... 




. !)ti 


2.07 


2.54 


2.53 1.58 2.18 


2.27 .35 


6.77 


6.79 


2.55 


3.05 


33.64 


1937.... 


..13 


02 


1.64 


1.04 


4.66 4.44 7.86 


4.64 1.28 


4.11 


4.27 


2.44 


2.93 


52.33 


1938.... 


...3 


20 


2.77 


4.69 


2.43 4.06 6.70 


3.95 4.55 


1.57 


.91 


3.09 


1.69 


39.61 


1939.... 


...5 


01 


5.07 


4.37 


7.76 1.94 5.22 


1.74 2.55 


' .77 


.95 


1.90 


2.14 


39.42 


1940.... 


. . . 1 


.46 


3.98 


2.55 


5.86 3.53 2.60 


2.07 2.24 


.45 


.54 


3.98 


2.92 


32.17 


1941... 


.. 2 


45 


.87 


2.08 


2.95 2.00 .76 


1.02 2.78 


2.72 


8.45 


3.72 


3.46 


33.26 


1942.... 


...2 


97 


4.72 


4.59 


3.47 5.21 4.42 


2.81 3.60 


1.25 


2.81 


6.47 


1.40 


43.72 


1943.... 




10 


1.41 


5.01 


3.60 8.68 4.76 


3.62 1.46 


5.61 


1.83 


2.37 


1.68 


40.13 


1944.... 




oi; 


3.61 


3.73 


5.83 2.84 1.71 


.69 5.24 


1.97 


1.06 


1.99 


2.61 


31.84 


1945.... 


...2. 


(17 


7.61 


12.00 


10.44 3.22 11.24 


3.12 7.20 


9.28 


3.35 


3.97 


1.30 


74.50 


1946.... 


... 3 


35 


3.95 


1.75 


3.90 6.91 1.19 


3.09 7.72 


3.02 


2.06 


5.22 


2.72 


44.88 


Aver. . . . 


8 


47 


2.60 


3.90 


4.53 4.52 4.37 


3.10 4.21 


4.01 


3.67 


3.42 


2.97 


44 77 


CARMI, White county 


1923 . . . 


















2.75 


6.15 




1924.... 


.. 2 


,07 


.90 




3.29 3.38 3.30 


3.35 .56 


4.72 


.21 


1.54 


2.94 




1925.... 


... 1 


.19 


2.55 


2.74 


1.55 1.45 4.90 


1.92 .95 


7.02 


6.19 


5.33 


1.07 


36.86 


1926.... 


.. 2 


75 


1.52 


3.36 


2.62 1.22 .96 


2.37 6.02 


5.29 


5.07 


2.71 


2.67 


36.56 


1927.... 


...5 


.32 


.94 


6.19 


8.10 9.50 3.08 


5.02 2.87 


10.49 


1.76 


4.69 


4.67 


62.63 


1928 


. . . 1 


02 


2.23 


1.45 


4.56 3.27 9.23 


2.46 3.90 


.58 


7.59 




2.29 




1929.... 


... 5 


85 


3.08 


2.91 


4.34 7.43 5.65 


2.84 2.82 


3.80 


2.28 


2.17 


4.54 


47.71 


1930.... 


...7 


56 


3.27 


2.00 


.64 .65 2.30 


.54 3.00 


5.59 


1.78 


1.90 


1.48 


30.71 


1931... 




. <;.-> 


2.30 


3.90 


3.13 2.21 3.51 


1.16 7.45 


5.37 


2.72 


5.71 


4.59 


42.70 


1932.... 


.. 6 


OS 


1.42 


2.92 


3.44 1.38 1.03 


3.66 7.71 


7.35 


5.55 


2.75 


4.93 


48.22 


1933.... 


. . . 4 


,91 


2.32 


5.24 


3.42 10.81 T 


3.97 3.45 


2.11 


4.24 


.99 


1.78 


43.24 


1934.... 


... 1 


,20 


1.23 


3.13 


2.87 2.90 3.72 


6.79 4.27 


8.68 


.94 


5.29 


2.28 


43.30 


1935.... 


...2 


94 


1.14 


9.78 


4.01 10.82 6.30 


1.92 .97 


2.53 


1.68 


3.14 


1.68 


46.91 


1936... 


. 1 


,64 


2.28 


3.09 


2.92 1.10 1.83 


1.20 2.11 


5.24 


4.60 


3.29 


3.62 


32.92 


1937.... 


...16 


,18 


2.29 


1.00 


4.13 3.79 6.04 


3.68 1.72 


2.29 


6.47 


1.97 


2.76 


52.27 


1938.... 


. . . 2 


7:: 


2.51 


5.79 


2.09 4.97 1.90 


4.48 2.13 


3.26 


.58 


3.91 


1.38 


35.73 


1939.... 


...4, 


86 


5.62 


3.80 


5.71 2.75 6.08 


2.00 2.11 


.75 


1.69 


1.66 


2.52 


39.54 


1940.... 


.... 1. 


97 


4.72 


1.13 


5.80 2.57 2.18 


2.19 1.33 


1.15 


.55 


4.91 


2.47 


30.97 


1941... 


.. 2 


01 


1.17 


1.04 


2.46 2.39 3.90 


3.76 6.29 


.99 


7.82 


2.00 


3.99 


37.82 


1942.... 


...2. 


06 


4.07 


4.05 


3.10 3.40 5.60 


1.94 2.12 


.69 


1.46 


5.50 


2.65 


36.64 


1943.... 




27 


1.22 


4.94 


3.31 6.02 4.52 


1.87 1.03 


3.37 


1.89 


1.64 


2.28 


32.36 


1944.... 




72 


3.00 


4.48 


6.48 3.18 .36 


1.54 2.48 


1.91 


.30 


2.17 


2.76 


29.38 


1945.... 


... 1. 


56 


6.98 


12.08 


7.24 2.77 7.58 


1.77 10.14 


5.78 


2.11 


3.65 


1..93 


63.59 


1946.... 


...2, 


11 


3.62 


1.78 


2.32 8.42 1.02 


4.46 7.75 


2.68 


1.97 


4.72 


2.91 


44.06 


Aver. 


8 


12 


2.63 


3.95 


3.81 4.19 3.70 


2.82 3.62 


3.98 


3.02 


3.23 


2.93 


41.31 


CHESTER, Randolph county 


1891... 










. 4.07 


2.67 4.16 


.76 


1.01 


6.26 






1892.... 


. .. 1 


,86 


3.98 


1.22 


7.37 8.77 2.91 


3.53 2.34 


1.75 


2.14 


6.05 


1.64 


43.55 


1893.... 




28 


.94 


2.49 


4.27 4.13 2.26 


2.75 .41 












1894.... 








1.59 


2.84 4.57 1.87 


1.91 1.62 


4.21 


3.30 


.58 


3.93 




1895.... 


... 3. 


68 


.70 


3.51 


2.23 2.07 3.99 


5.93 2.87 


3.38 


.41 


4.38 


4.72 


37.77 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



273 



Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


CHESTER, Randolph 


county, concluded 


1896... 


. 1.79 


1.93 


3.91 


2.25 


7.59 7.08 


4.27 2.52 


2.58 


1.90 




.20 




1897 


.. 4.13 


2.81 


8.34 


6.28 


3.16 9.60 


3.05 1.36 


.75 


.17 


4.50 


4.77 


48.92 


1898 


. . 3.93 


1.98 


8.90 


3.48 


8.49 3.79 


6.34 4.23 


3.33 


4.97 


1.23 


2.23 


52.90 


1899 


. . 2.60 


2.76 


2.53 


2.71 


1.84 2.54 


2.13 2.29 


.80 


3.36 


1.75 


2.48 


27.79 


1900 


. . 1.01 


3.94 


1.97 


3.43 


4.45 7.62 


3.03 1.91 


3.17 


1.53 


5.21 


1.65 


38.92 


1901... 


.. 1.00 


1.60 


3.39 


2.99 


1.56 1.72 


.32 2.32 


1.55 


1.92 


1.34 


1.92 


21.63 


1902 


. . 1.54 


1.39 


4.06 


2.85 


3.61 3.27 


2.62 4.77 


3.48 


1.41 


3.97 


4.08 


37.05 


1903 


. . 1.50 


3.71 


4.33 


1.97 


1.71 2.69 


4.39 4.35 


2.52 


2.92 


1.07 


1.95 


33.11 


1904 


. . 2.74 


2.02 


9.15 


5.47 


4 . 25 4 . 86 


3.57 3.13 


7.42 


1.42 


.86 


2.20 


47.09 


1905 


. . 3.05 


2.19 


3.34 


4.20 


3.99 1.87 


13.56 2.34 


9.26 


4.72 


2.18 


2.78 


53.48 


1906... 


. . 5.85 


.2.58 


5.84 


3.04 


2.58 6.80 


2.30 4.62 


7.78 


2.86 


4.76 


3.22 


52.23 


1907 


, . 5.56 


1.30 


2.63 


2.38 


5.48 4.74 


4.83 6.26 


2.22 


2.96 


3.80 


3.58 


45.74 


1908 


.. 3.12 


6.77 


5.57 


8.86 


7.52 1.91 


7.45 1.65 


1.76 


.10 


2.87 


.87 


48.45 


1909 


. . 2.83 


4.07 


5.21 


7.23 


4.58 2.90 


7.25 .09 


8.78 


1.58 


3.76 


3.18 


51.46 


1910 


. 2.12 


3.71 


.04 


3.02 


3.35 4.91 


9.04 4.46 


4.03 


5.72 


.28 


1.56 


42.24 


1911... 


.38 


3.12 


1.38 


6.04 


1.86 2.82 


1.58 5.96 


7.00 


4.38 


3.37 


3.08 


40.97 


1912 


. . 2.72 


4.87 


5.13 


7.20 


5.46 6.46 


6.53 8.13 


4.18 


1.60 


3.36 


.74 


56.38 


1913 


. . 9.78 


1.54 


7.68 


3.63 


2.20 2.80 


3.33 .76 


5.41 


7.98 


3.39 


2.45 


50.95 


1914 


.. 3.12 


4.73 


3.51 


3.27 


1.05 2.02 


1.20 5.90 


4.54 


6.06 


1.90 


4.88 


42.18" 


1915 


. 3.77 


2.81 


1.12 


1.07 


9.54 7.96 


5.95 13.44 


4.30 


1.02 


3.56 


4.62 


59.16 


1916... 


,.12.13 


1.51 


2.66 


2.78 


3.09 7.12 


1.61 4.43 


3.03 


3.54 


1.86 


6.73 


50.49 


1917 


. . 5.63 


.43 


2.89 


7.56 


5.00 2.75 


2.69 4.82 


.57 


1.83 


2.50 


1.58 


38.25 


1918 


. 2.86 


.80 


1.67 


9.70 


7.45 2.60 


.25 5.56 


3.65 


3.51 


2.36 


4.08 


44.49 


1919 


. 1.06 


1.45 


2.82 


2.07 


6.02 7.02 


1.91 2.35 


2.83 


8.44 


4.65 


.55 


41.17 


1920 , 


. 3.29 


.64 


5.66 


3.30 


7.85 .67 


2.03 3.58 


2.91 


1.65 


.70 


3.42 


35.70 


1921... 


. 1.75 


1.41 


6.12 


4.86 


2.38 3.54 


.86 4.32 


9.23 


1.22 


5.84 


2.83 


44.36 


1922 


,. 1.11 


1.55 


7.33 


5.00 


2.64 3.76 


1.64 1.39 


1.20 


2.75 


2.32 


4.88 


35.57 


1923 


. . 2.60 


3.49 


4.73 


3.08 


6.58 4.07 


1.24 6.07 


1.44 


3.86 


1.95 


4.72 


43.83 


1924 


. . 1.46 


1.42 


3.37 


2.47 


4.68 3.51 


5.03 3.48 


2.18 


.62 


1.12 


2.92 


32.26 


1925 


, . 1.32 


2.30 


2.44 


4.06 


1.51 5.81 


5.11 1.34 


6.15 


3.85 


4.57 


1.79 


40.25 


1926... 


. . 2.03 


3.53 


2.16 


2.49 


.82 1.52 


.81 5.68 


4.31 


4.82 


3.77 


2.04 


33.98 


1927 


. . 4.58 


.65 


6.23 


10.40 


4/46 5.82 


4.14 1.76 


1.46 


2.38 


5.39 


3.22 


50.49 


1928 


. . 1.39 


1.69 


2.21 


3.87 


3.50 12.71 


1.10 6.34 


.03 


3.47 


3.44 


2.36 


42.11 


1929 


. . 3.25 


2.01 


2.86 


3.64 


8.45 3.58 


2.09 4.77 


3.67 


2.23 


2.09 


4.33 


42.97 


1930 


. . 5.93 


3.04 


1.45 


1.42 


2.46 1.04 


1.93 .10 


3.78 


1.98 


1.19 


.99 


25.31 


1931... 


.57 


1.49 


3.19 


3.37 


3.87 1.26 


1.50 3.70 


3.70 


3.02 


5.56 


2.91 


34.14 


1932 


. . 4.86 


.92 


2.23 


2.23 


.56 3.50 


1.87 6.21 


2.21 


5.33 


1.61 


4.75 


36.28 


1933 


. . 2.57 


1.27 


2.36 


6.63 


8.29 .23 


2.03 8.17 


2.46 


3.58 


1.11 


2.11 


40.81 


1934 


.. 1.55 


1.57 


2.91 


4.67 


2.41 .94 


1.72 3.30 


4.40 


1.69 


4.20 


1.47 


30.83 


1935 


. . 2.74 


.74 


7.44 


2.44 


5.76 8.29 


2.43 2.59 


2.85 


2.08 


3.62 


.97 


41.95 


1936... 


. . .56 


.97 


1.17 


2.74 


.94 1.65 


1.29 .13 


3.81 


4.39 


2.34 


2.21 


22.20 


1937 


. . 9.36 


.94 


1.84 


4.85 


2.64 3.84 


3.63 .88 


.73 


3.79 


1.93 


3.15 


37.58 


1938 


. . 2.79 


3.01 


6.47 


2.69 


4.83 8.25 


3.34 2.08 


3.80 


.89 


1.69 


2.18 


42.02 


1939 


. . 3.83 


3.51 


3.38 


5.70 


2.31 5.87 


3.67 4.50 


1.13 


1.11 


1.86 


1.70 


38.57 


1940 


, . 1.68 


1.88 


1.34 


4.29 


1.84 1.75 


.91 4.28 


.71 


1.47 


3.93 


2.91 


26.99 


1941... 


. . 2.58 


.62 


.32 


2.44 


1.42 3.36 


.70 2.98 


2.17 


8.39 


2.61 


2.01 


29.60 


1942 


. . 3.03 


3.33 


2.71 


1.86 


3.90 3.58 


4.44 4.12 


.21 


.21 


5.84 


2.58 


35.81 


1943 


.. T 


.76 


2.39 


4.04 


8.99 6.31 


4.78 3.37 


3.44 


2.75 


1.14 


2.25 


40.22 


1944 


, . .43 


3.15 


2.90 


3.87 


4.56 .89 


1.50 2.61 


3.09 


.29 


1.65 


2.19 


27.13 


1945 


, . 1.26 


5.54 


8.26 


7.62 


4.46 5.74 


1.45 1.57 


7.10 


3.64 


2.31 


.78 


49.75 


1946 


. . 2.79 


3.81 


1.46 


2.72 


12.05 2.33 


2.27 8.10 


3.98 


.85 


5.41 


2.04 


47.81 


Aver 


. . 2 . 95 


2.31 


3.67 


4.13 


4.36 4.05 


3.21 3.69 


3.40 


2.82 


2.98 


2.69 


40.26 











DU 


QUOIN, Perry county" 


1887... 






4.11 




3.29 . 


2.40 .21 


2.47 










1888 
1889 


3.20 
2 85 


2.20 
2 25 


3.50 


2.00 


3.70 8.10 


2.20 6.00 


.70 


2.60 


4.60 


2.50 


ii.so 


1890 
























1891 


. . .46 


4.25 


2.22 


4.16 


1.10 2.09 


1.54 4.19 


.69 


1.00 


4.78 


1.25 


27.73 


1892 


. . 1.50 


2.56 


2.16 


5.98 


7.76 2.14 


2.08 


.56 


2.74 


3.53 


1.35 


35.20 


1893 


.. .40 


2.93 


3.69 


9.81 


3.74 4.66 


1.16 1.58 


2.79 


2.58 


3.20 


1.28 


37.82 


1894 


. . 1 . 86 


3.56 


3.91 


2.62 


3.62 3.40 


1 . 37 1 . 69 


2.66 


2.91 


1.59 


2.74 


31.93 


1895 


. . 2.07 


1.05 


2.94 


2.12 


2.50 2.84 


5.07 2.04 


2.59 


.83 















Data from 1891 thru October, 1908, are for St. John, 2 miles north of Du Quoin. 



274 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 








DU 


QUOIN, Perry county, concluded 


1896 


. 1.58 


2.43 


3.89 


3.19 9.46 4.40 


6.83 


2.14 


2.70 


1.94 


3.86 


1.31 


43.73 


1897 


. 3.17 


2.46 


11.55 


4.55 2.45 4.52 


1.91 


.66 


1.50 


1.46 


4.70 


4.16 


43.09 


1898 


. 4.07 


1.32 


9.98 


3.53 6.06 3.15 


7.52 


2.86 


3.60 


3.06 


1.17 


2.87 


49.19 


1899 


. 3.65 


3.73 


3.34 


2.67 3.03 4.73 


3.60 


2.53 


.84 


4.08 


2.76 


2.08 


37.04 


1900 


. 1.98 


4.19 


1.85 


2.59 4.85 


4.89 


2.47 


3.20 


1.12 


3.27 


2.59 




1901 


. 1.38 


1.83 


4.59 


2'.48 1.68 . 




2.46 


.45 


2.71 


1.03 


3.24 




1902 


. 1.51 


1.16 


4.20 


2.09 3.07 3.03 


3.49 


2.12 


2.44 


1.02 


4.10 


4.54 


32.77 


1903 


. 1.49 


3.64 


3.22 


2.25 1.89 1.37 


2.04 


2.39 


1.33 


2.29 


1.12 


2.05 


25.08 


1904 


. 2.63 


2.84 


8.26 


3.43 4.39 


6.66 


4.16 


4.69 


83 


.65 


2.96 


45.52 


1905 


. 2.51 


1.94 


2.77 


4.25 3.07 3.56 


13.49 


1.86 


3.89 


3.60 


1.85 


2.81 


45.60 


1906 


. 4.30 


3.65 


4.38 


1.33 .94 2.75 


3.37 


2.64 


8.28 


.85 


6.40 


5.66 


44.55 


1907 


. 6.47 


.82 


2.64 


2.50 5.08 8.18 


3.18 


7.48 


1.65 


1.96 


3.66 


3.53 


47.15 


1908 


.2.28 


5.55 


3.67 


7.31 6.21 1.41 


4.72 


2.16 


.96 


T 


1.88 


1.16 


37.31 


1909 


. 5.80 


4.63 


4.90 


5.43 3.86 1.34 


8.72 


.17 


5.71 


.84 


3.13 


3.71 


48.24 


1910 


. 1.43 


4.16 


.08 


3.23 2.99 3.41 


3.68 


2.59 


2.41 


7.17 


.31 


2.01 


33.47 


1911 


.89 


4.02 


1.38 


8.52 1.86 1.87 


1.91 


3.55 


10.26 


3.02 


2.68 


2.30 


42.26 


1912 


.2.68 


2.53 


4.94 


6.58 4.27 5.89 


7.37 


7.02 


2.87 


1.93 


1.54 


.44 


48.06 


1913 


. 7.11 


1.31 


8.65 


2.29 1.22 1.72 


3.25 


3.12 


4.99 


4.81 


3.24 


1.42 


43.13 


1914 


. 2.11 


4.21 


4.48 


1.98 .59 2.20 


3.00 


4.73 


3.75 


4.10 


.87 


3.62 


35.64 


1915 


. 4.46 


1.92 


.53 


1.18 9.42 9.42 


3.40 


11.78 


1.46 


73 


1.96 


4.61 


50.87 


1916... 


. 4.41 


1.42 


1.11 


1.84 3.21 9.63 


1.40 


3.69 


3.12 


2.88 


1.74 


3.44 


37.89 


1917 


.3.23 


.71 


3.45 


7.37 3.94 2.44 


3.23 


3.26 


1.78 


2.15 


2.73 


1.23 


35.52 


1918 


. 3.47 


.91 


1.67 


8.05 6.37 1.82 


.45 


6.52 


4.05 


2.61 


2.24 


5.62 


43.78 


1919 


. 1.03 


1.60 


3.37 


2.65 5.23 5.63 


1.10 


4.63 


2.71 


9.44 


6.05 


.76 


44.20 


1920 


. 3.09 


.67 


7.01 


3.17 6.38 1.41 


5.74 


2.18 


1.37 


1.98 


1.42 


3.81 


38.23 


1921... 


. 1.93 


1.14 


4.83 


3.52 2.51 4.63 


3.64 


5.57 


8.53 


.89 


6.28 


2.63 


46.10 


1922 


. 1.37 


1.81 


8.86 


3.73 2.45 1.02 


1.37 


1.44 


.57 


3.46 


2.37 


6.45 


34.90 


1923 


. 2.93 


3.13 


5.10 


4.46 7.63 1.99 


2.01 


7.22 


3.21 


3.17 


2.46 


4.31 


47.62 


1924 


. 2.29 


1.23 


2.67 


4.24 5.66 2.96 


3.96 


2.21 


1.63 


.19 


1.27 


3.27 


31.58 


1925 


. .95 


2.21 


.2.21 


2.84 2.25 5.29 


1.91 


3.07 


6.16 


5.31 


4.34 


1.59 


38.13 


1926... 


. 1.83 


3.65 


2.56 


2.91 1.42 1.57 


2.65 


7.72 


5.49 


6.76 


3.11 


2.18 


41.85 


1927 


. 5.31 


.75 


5.94 


7.12 5.55 4.37 


4.55 


2.54 


3.70 


1.45 


5.35 


3.55 


50.18 


1928 


. 1.54 


2.86 


1.04 


3.05 2.24 10.29 


2.04 


3.80 


.93 


5.81 


3.91 


3.01 


40.52 


1929 


.4.05 


2.09 


2.87 


4.24 7.36 10.08 


5.40 


1.95 


3.20 


1.88 


2.02 


5.00 


50.14 


1930 


. 7.26 


3.10 


1.43 


1.17 1.11 1.94 


1.09 


.44 


4.04 


2.31 


3.02 


1.32 


28.23 


1931... 


.73 


1.72 


2.95 


2.44 4.08 1.33 


2.29 


5.51 


6.23 


1 78 


6.01 


5.35 


40.42 


1932 


.4.65 


.85 


2.76 


1.92 1.95 2.97 


4.10 


8.43 


4.72 


5.19 


1.56 


5.70 


44.80 


1933 


. 3.16 


1.40 


3.67 


4.52 11.31 .09 


4.07 


4.42 


3.03 


2.70 


.98 


2.92 


42.27 


1934 


.1.30 


.95 


2.96 


3.47 2.61 1.13 


1.58 


2.92 


8.70 


2.25 


6.90 


1.66 


36.43 


1935 


. 3.22 


.86 


8.50 


3.13 5.95 7.82 


2.25 


2.94 


2.60 


3.57 


4.61 


1.06 


46.51 


1936 


. .65 


1.46 


1.83 


2.98 .69 2.77 


2.26 


.04 


4.00 


4.74 


3.99 


3.78 


29.19 


1937 


.9.89 


1.66 


1.20 


5.31 3.07 6.58 


3.49 


1.49 


4.55 


5.38 


1.75 


3.25 


47.62 


1938 


. 2.77 


3.02 


6.59 


1.83 4.96 6.31 


2.66 


2.99 


3.42 


.65 


2.02 


1.85 


39.07 


1939 


. 4.84 


3.51 


4.08 


6.29 1.25 5.42 


2.91 


3.88 


.64 


1.64 


1.97 


1.73 


38.16 


1940 


. 1.58 


2.98 


.94 


5.05 .97 1.06 


3.21 


.75 


.36 


.84 


3.69 


2.86 


24.29 


1941... 


. 2.58 


.69 


.99 


3.37 1.80 4.02 


1.79 


1.98 


2.45 


9.16 


3.64 


2.40 


34.87 


1942 


. 2.60 


4.30 


2.91 


2.73 3.60 6.61 


5.47 


2.68 


1.12 


2.47 


5.06 


2.79 


42.34 


1943 


. .31 


1.15 


2.86 


4.14 8.04 6.68 


.88 


3.33 


4.42 


2.49 


1.61 


1.56 


37.47 


1944 


. .43 


3.87 


2.78 


5.76 5.43 1.50 


1.36 


2.95 


1.66 


1.35 


2.06 


2.34 


31.49- 


1945 


. 1.33 


6.97 


13.94 


7.95 4.40 6.97 


1.33 


3.72 


8.17 


4.32 


2.04 


1.49 


62.63 


1946 


. 2.92 


4.75 


2.05 


3.26 11.25 .81 


5.74 


10.16 


1.63 


2.47 


4.25 


3.37 


52.66 


Aver 


. 2.78 


2.49 


3.91 


3.90 4.08 3.96 


3.42 


3.49 


3.24 


2.83 


3.01 


2.83 


39 94 


EDWARDSVTXLE, 


Madison county 


1909... 




















2.25 




1910 


. 3.14 


2.89 


.13 


3.71 5.56 4.45 


5.06 


2.42 


7.05 


4.42 


.12 


1.00 


39.95 


1911... 


. 1.33 


2.27 


2.31 


6.58 .98 1.52 


1.73 


2.68 


10.71 


2.80 


2.17 


1.77 


36.85 


1912 


. 1.27 


3.03 


4.08 


8.07 3.66 4.82 


8.84 


5.18 


1.86 


2.33 


1.82 


.64 


45.60 


1913 


. 4.90 


1.09 


8.22 


3.20 1.84 4.86 


3.95 




4.56 


5.17 


4.21 


1.87 


44.67 


1914 


. 2.13 


4.37 


.81 


2.22 .46 .47 


2.51 


8.11 


4.67 


6.14 


1.83 


1.79 


35.51 


1915 


.2.78 


1.77 


.36 


1.30 10.70 9.39 


6.59 


13.30 


1.35 


1.27 


1.97 


3.73 


54.51 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



275 



Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


EDWARDSVILLE, 


Madison county 


, concluded 


1916... 


. . 4.82 


1.26 


.95 


1.68 2.22 


3.13 


3.28 9.50 


1.77 


1.64 


2.05 


2.47 


34.77 


1917 


. . 1.57 


.45 


1.28 


5.52 5.03 


1.09 


1.83 3.54 


3.88 


2.40 


74* 


.77 


28.10 


1918 


. . 1.87 


.95 


.44 


7.43 4.38 


1.65 


.46 2.39 


5.61 


3.36 


2.19 


2.62 


33.35 


1919 


,. .09 


1.43 


1.95 


1.74 6.37 


4.43 


1.48 1.80 


5.05 


8.89 


2.37 


1.14 


36.7-J 


1920 


. 1.94 


1.23 


4.58 


3.90 7.36 


1.63 


.85 5.13 


3.35 


1.70 


.52 


2.76 


34.95 


1921... 


. 1.05 


1.04 


7.26 


6.66 2.88 


2.50 


2.36 4.08 


3.96 


1.31 


4.12 


2.93 


40.15 


1922 


. .60 


1.01 


6.67 


8.63 2.12 


1.71 


2.05 1.61 


2.50 


1.24 


1.92 


5.51 


35.57 


1923 




1.44 


3.80 


4.02 6.17 


3.45 


4.88 5.68 


6.46 


3.76 


2.71 






1924 


, . 2.20 


1.47 


2.62 


1.10 6.47 


7.04 


3.52 3.25 


3.15 


.77 


2.02 


4.36 


37.97 


1925 


, . .88 


2.09 


1.98 


1.79 .85 


7.07 


3.09 




6.27 


2.96 


1.69 




1926... 


. 1.25 


2.60 


3.20 


3.94 2.75 


4.18 


1.46 4.05 


8.84 


4.03 


4.10 


.59 


40.99 


1927 


. 3.88 


.97 


5.49 


7.92 8.00 


2.63 


1.85 4.12 


3.86 


3.93 


6.18 


2.60 


51.43 


1928 


. 1 82 


2.37 


1.50 


2 92 .94 


7 61 


1 73 4 19 


1 03 


3 65 








1929 










5.06 


3.93 2.56 


1.40 


5.09 


.96 


2.94 




1930 


. 6.16 


2.61 


1.81 


1 . 59 1 . 53 


2.52 


.92 .79 


4.68 


1.84 


2.29 


.64 


27.38 


1931 


. .35 


1.54 


2.20 


3.13 3.88 


2.93 


2.62 3.82 


6.27 


4.09 


4.74 


2.43 


38.00 


1932 


. 2.66 


1.44 


1.61 


2.63 1.40 


3.95 


5.75 6.12 


2.13 


3.73 


1.92 


2.57 


35.91 


1933 


. 3.65 


1.80 


5.30 


3.36 11.60 


.39 


2.09 .65 


2.77 


3.00 


.78 


1.11 


36.50 


1934 


. 1.42 


.91 


3.04 


1.91 .67 


2.54 


2.40 3.90 


6.64 


1.87 


3.40 


1.58 


30.28 


1935 


. 2.87 


1.32 


5.78 


2.54 9.46 


4.88 


4.71 '.42 


4.51 


2.99 


3.61 


1.56 


44.65 


1936... 


. 1.98 


2.24 


1.50 


4.51 1.61 


3.15 


.29 1.64 


4.70 


3.16 


2.38 


2.12 


29.28 


1937 


. 6.32 


1.88 


1.83 


6.74 4.69 


6.32 


1.94 1.76 


2.96 


3.99 


1.46 


4.35 


44.24 


1938 


. 1.22 


3.61 


9.67 


3.38 7.94 


5.19 


5.34 2.52 


1.93 


1.13 


3.92 


1.89 


47.74 


1939 


. 4.84 


3.96 


2.22 


5.31 2.35 


4.77 


7.55 10.24 


.95 


1.95 


2.22 


1.81 


48.17 


1940 


. 1.52 


1.59 


2.29 


4.22 1.80 


2.11 


1.12 4.29 


.14 


2.27 


2.88 


3.86 


28.09 


1941... 


,. 2.74 


.76 


.49 


5.93 2.54 


3.96 


3.07 2.21 


7.22 


8.07 


2.77 


1.04 


40.80 


1942 


. .84 


3.52 


2.42 


2.31 4.74 


6.65 


6.32 3.03 


1.69 


1.02 


8.33 


3.74 


44.61 


1943 


. . 1.57 


.94 


4.67 


1.16 14.90 


5.98 


1.74 2.71 


3.14 


4.08 


1.09 


1.04 


43.02 


1944 


. .72 


2.55 


3.37 


10.56 5.91 


1.61 


1.72 5.60 


3.36 


1.01 


1.72 


.98 


39.11 


1945 


. 1.04 


2.89 


10.87 


5.95 4.84 


7.42 


1.86 1.82 


8.89 


2.02 


2.83 


1.31 


51.74 


1946 


. 2.47 


2.68 


4.35 


3.22 6.36 


3.09 


2.06 17.25 


1.42 


4.15 


9.66 


3.62 


60.33 


Aver 


. 2.28 


1.94 


3.36 


4.19 4.58 


3.95 


3.05 4.35 


4.01 


3.26 


2.80 


2.20 


39.97 


FAIRFIELD, Wayne county 


1908 








5 30 8 02 


1 21 


2 59 2 61 


35 





3 21 


1 02 




1909 


, . 3.02 


6.83 


3.91 


6.18 3.17 


3.95 


5.35 1.05 


4.10 


1.86 


3.60 


2.34 


45.36 


1910 


, . 2.40 


3.87 


.08 


3.20 3.77 


1.14 


5.20 1.54 


6.35 


7.45 


.96 


1.91 


37.87 


1911... 


. 1.40 


2.19 


2.00 


6.21 1.20 


3.89 


.84 2.53 


6.80 


2.01 


2.64 


2.91 


34.62 


1912 


, . 1.85 


3.09 


4.45 


5.42 3.20 


8.05 


7.41 4.87 


3.53 


.54 


2.87 


1.58 


46.86 


1913 


,.10.18 


1.05 


12.43 


3.70 2.30 


1.48 


1.41 3.46 


4.65 


4.08 


4.40 


1.84 


50.98 


1914 


, . 2.30 


3.82 


3.36 


3.36 .12 


1.14 


1.46 7.15 


3.58 


3.86 


.89 


3.27 


34.31 


1915 


, . 4.04 


2.54 


1.00 


T 6.95 


5.59 


3.41 


2.16 




2.61 


4.71 




1916... 


. . 8.76 


1.30 


1.79 


1.16 3.60 


5.24 


1.85 5.94 


3.90 


2.66 


1.63 


2.92 


40.75 


1917 


, . 5.94 


.56 


2.67 


7.40 3.03 


4.94 


3.26 2.58 


.35 


4.17 


1.67 


1.60 


38.17 


1918 


,. 3.61 


1.16 


.95 


6.44 4.22 


7.46 


1.06 4.70 


3.52 


2.78 


2.35 


7.17 


45.42 


1919 


. . .75 


1.75 


4.76 


3.55 8.33 


6.27 


1.03 3.57 


.75 


16.00 


4.40 


1.77 


52.93 


1920 


. . 2.81 


1.42 




2.35 8.27 


2.09 


3.47 5.33 


4.04 


2.35 


1.62 


3.52 




1921... 


. . 2.12 


1.10 


5.47 


3.22 1.00 


4.74 


1.81 5.26 


5.25 


1.44 


5.45 


4.03 


40.89 


1922 


. . 1.13 


1.83 


9.08 


4.94 2.76 


3.95 


1.66 1.25 


.46 


3.07 


2.02 


5.71 


37.86 


1923 


. . 2.58 


2.17 


4.28 


3.40 4.60 


3.70 


2.96 4.82 


4.48 


3.29 


1.79 


6.39 


44.46 


1924 


. . 2.75 


2.37 


2.99 


2.48 4.38 


6.50 


2.78 .94 


1.63 


.46 


1.70 


2.45 


31.43 


1925 


. . .79 


2.19 


1.15 


2.16 2.37 


5.11 


1.07 .95 


6.20 


4.59 


4.43 


1.55 


32.56 


1926... 


. . 2.35 










3.61 2.61 


10.32 


4.18 


3.05 






1927 




1.02 


5.39 


8.04 12.05 


4.49 


7.00 8.48 


3.75 


1.59 


4.33 


4.04 




1928 


. . 1.31 


4.09 


1.05 


2 . 89 




3.62 


1.26 


4.31 


3.23 


2.64 




1929 


. . 3.75 


2.37 


2.74 


4.00 9.31 


5.64 


3.77 2.34 


2.49 


3.24 


2.03 


3.71 


45.39 


1930 


. . 7.44 


3.50 




1.32 1.30 


1.64 


.21 2.03 


5.29 


2.56 


1.76 


1.37 


30.31 


1931... 


.57 


1.06 


2.36 


3.47 3.62 


1.16 


2.20 6.61 


7.23 


2.63 


5.16 


4.53 


40.60 


1932 


. . 5.70 


1.02 


2.31 


2.67 1.43 


1.76 


1.80 5.77 


6.08 


5.72 


1.97 


5.66 


41.89 


1933 


. . 2.75 


1.62 


5.51 


3.70 9.06 


.48 


2.53 2.30 


4.47 


2.31 


.92 


3.07 


38.72 


1934 


. . 1 . 59 


1.29 


3.32 


2.05 2.16 


1.10 


5.15 3.06 


6.18 


.83 


6.30 


2.14 


35.12 


1935 


. . 4.01 


.64 


6.63 


3.84 9.46 


5.50 


2.76 2.69 


3.35 


2.27 


5.64 


1.40 


48.19 



276 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. Apr. May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


FAIRFIELD, Wayne 


county, concluded 


1936... 


. 1.20 


2.01 


2.68 3.18 .78 


1.56 


1.70 


.76 


4.28 


3.72 


4.44 


3.56 


29.87 


1937 


..10.56 


1.62 


1.46 6.28 3.27 


5.11 


2.57 


1.92 


4.81 


4.89 


2.31 


2.91 


47.71 


1938 


. . 1.86 


2.01 


5.61 2.65 3.95 


3.36 


5.64 


3.06 


2.90 


.70 


3.21 


1.76 


36.71 


1939 


. . 4.88 


3.33 


3.70 6.90 2.39 


4.59 


2.74 


4.07 


.81 


1.48 


1.62 


1.84 


38.35 


1940 


. . 1.75 


3.53 


1.79 6.59 3.94 


2.82 


.92 


2.45 


.66 


.88 


3.30 


3.07 


31.70 


1941... 


. 1.68 


1.38 


1.12 2.69 2.31 


4.23 


3.08 


1.59 


2.31 


9.39 


3.06 


2.53 


35.37 


1942 


. . 1.95 


3.17 


3.89 2.05 3.97 


8.74 


3.44 


1.68 


1.45 


2.10 


5.29 


1.63 


39.36 


1943 


. . .79 


1.28 


2.45 4.40 10.18 


5.11 


1.92 


.18 


4.15 


2.89 


2.52 


2.14 


38.01 


1944 


. . .66 


3.29 


3.84 6.55 2.74 


.60 


1.10 


5.13 


1.76 


1.69 


1.67 


1.76 


30.79 


1945 


. . 1.36 


4.99 


12.79 5.95 5.30 


6.91 


1.62 


6.78 


4.95 


2.67 


4.56 


1.69 


59.57 


1946 


.. 2.13 


4.25 


1.62 2.20 12.16 


3.26 


1.94 


6.38 


2.77 


2.04 


6.31 


2.79 


47.85 


Aver 


3.10 


2.34 


3.73 4.00 4.61 


3.91 


2.75 


3.48 


3.68 


3.23 


3.10 


2.92 


40.85 


FLORA, Clay county 3 


1869 






. 10.90 5.10 


6.40 


6.10 


2.70 


4.30 


3.00 


5.70 


3.80 




1870 


.. 4.90 


1.30 


3.30 2.50 3.00 


4.30 


6.30 


5.10 


1.30 


3.50 


1.80 


2.60 


39.90 


1871... 


. . 3.30 


5.20 


3.50 .90 5.90 


2.60 


3.50 


2.35 


1.90 


2.50 


2.57 


2.35 


36.57 


1872 


. . 1.05 


1.70 


1.90 4.20 4.70 


3.10 


9.50 


2.70 


1.70 


1.00 


.50 


1.70 


33.75 


1873 


. . 3 . 70 


2.60 


4.31 4.30 5.20 


3.00 


6.40 


2.30 


3.60 


3.00 


1.40 


9.59 


49.40 


1874 


. . 3.20 


4.60 


6.30 6.10 3.60 


3.40 


6.20 


9.80 


1.50 


2.20 


3.80 


4.30 


55.00 


1875 


1 30 


4 40 


4.50 1.40 8.30 




15.30 


2.90 


3.50 


1.80 


2.70 


2.60 




1876... 


.. 9.80 


3.40 


5.90 4.10 9.80 


11.40 


6.50 


4.00 


2.60 


1.80 


3.00 


.30 


62.60 


1877 


. . 1.70 


1.20 


3.15 4.60 6.40 


6.40 


2.40 


4.50 


1.60 


4.60 


3.60 


3.00 


43.15 


1878 


.. 3.00 


3.70 


1.80 4.80 5.80 


3.20 


6.50 


2.90 


1.10 


3.40 


2.30 


6.30 


44.80 


1879 


. . 5.10 


1.40 


5.10 2.60 2.10 


1.20 


2.30 


5.50 


1.00 


2.90 


5.00 


3.20 


37.40 


1880 


.. 4.50 


2.20 


2.70 2.50 5.40 


3.90 


2.50 


4.50 


7.70 


3.20 


1.80 


2.50 


43.40 


1881 




1.85 


3.00 1.80 1.71 


7.50 
















* 
1886... 




1.02 


3.79 4^55 1.25 


7.57 


1.89 


4.69 


3.52 


.73 


6.75 


3.03 




1887 


. 1.48 


6.24 


6.56 4.90 3.51 


3.56 


3.48 


2.26 


2.77 


1.17 


5.23 


3.65 


44.81 


1888 


. . 2.39 


2.72 


5.22 1.62 3.32 


4.83 


1.79 


7.66 


1.26 


2.35 


6.16 


1 97 


41.29 


1889 


.. 2.60 


2.49 


2.23 1.16 4.88 


11.49 


6.14 


2.00 


5.66 


1.95 


5.45 


2.11 


48.16 


1890 


. . 8.30 


4.15 


6.45 4.80 2.70 


3.72 


3.14 


3.05 


4.90 


1.38 


2.20 


2.50 


47.29 


1891... 


. 1.50 


5.15 


3.25 1.87 2.00 


5.00 


.20 


6.10 


1.40 


1.80 


6.60 


2.20 


37.07 


1892 


. . 2.10 


4.00 


1.75 7.60 7.00 


1.50 


3.50 


5.85 


.50 


.75 


4.40 


.75 


39.70 


1893 


. . 1 . 25 


3.20 


4.20 10.85 4.95 


2.75 


.65 


1.20 






2.90 


1.33 




1894 


. . 2.41 


2.43 


2.97 3.20 3.77 


1.91 


2.96 


1.75 


4.09 


1.60 


.68 


3.00 


30.77 


1895 


. . 3.46 


.16 


1.63 1.84 2.47 


5.60 


5.20 


2.56 


2.58 


.46 


4.34 


3.77 


34.07 


1896 


. 1.05 


2.02 


2.75 1.55 4.05 


5.20 


6.26 


1.04 


4.23 


2.31 


3.92 


.31 


34.69 


1897 


. . 3.93 


2.29 


9.42 6.00 2.31 


4.28 


2.95 


.39 


.24 


.37 


5.48 


2.95 


40.61 


1898 


. . 4 . 86 












4.76 


4.06 


2.41 


1.52 




1899 


. . 2.94 


2.69 


3.48 1.49 2.73 


4.56 


3.53 


2.57 


.60 


4.54 


1.71 


2.65 


33.49 


1900 


. . .76 


3.17 


1.91 1.36 4.95 


8.28 


5.61 


1.28 


4.26 


2.24 


3.04 


1.94 


38.80 


1901... 


.86 


2.19 


3.46 3.07 2.04 


3.91 


2.09 


2.80 


.84 


2.95 


1.82 


5.18 


31.21 


1902 


. . 1 . 25 


.94 


2 64 2.35 1 55 


4 63 


2 53 


3 13 


3 37 


1 01 


2.85 






1903 


. . 2.04 


2.02 


3.57 4.79 1.75 


2.18 


3.89 


5.62 


2.51 


1.81 


.83 


1.92 


32.93 


1904 


. . 2.37 


2.00 


9.50 2.45 3.40 


5.14 


3.41 


3.02 


6.26 


.37 


.86 


2.15 


40.93 


1905 


. . 1.45 


1.29 


2.32 3.45 4.06 


2.29 


5.85 


3.36 


2.35 


6.95 


1.83 


2.86 


38.06 


1906... 




2.33 


3.87 1.22 .69 


2.52 


2.17 


4.76 


6.78 


2.29 


5.71 


3.33 




1907 


. . 7.59 


.63 


3.09 3.63 4.02 


6.08 


4.44 


4.98 


.95 


1.89 


2.92 


3.33 


43.55 


1908 


.. 1.50 


5.43 


3.18 5.16 7.82 


1.08 


3.22 


.90 


1.06 


.10 


2.80 


.98 


33.23 


1909 


. . 2.46 


4.40 


5.55 4.79 4.08 


5.59 


6.57 


.09 


5.79 


4.50 


4.28 


2.45 


50.55 


1910 




3.66 


.24 3.93 3.17 


3.23 


5.03 


1.60 


5.03 


7.17 


.78 


1.27 




1911... 




2.20 


1.62 5.41 






3.92 


9.82 


2.81 


2.91 


1.87 


. 


1912 


. 1.42 


2.21 


4.08 4.92 4.63 


3.25 


9.53 


3.53 


2.61 


2.28 


2.10 


.81 


41.37 


1913 


.. 7.82 


1.25 


8.03 2.58 1.58 


3.25 


1.77 


2.67 


3.77 


4.60 


4.67 


1.44 


43.43 


1914 


. . 2.81 


4.46 


2.96 2.31 .21 


2.22 


1.19 


4.36 


5.20 


3.11 


1.10 






1915 






27 7.50 


6.39 


5.62 


7.71 


1.49 


.26 


2.55 






1916... 






1.28 4.26 


2.48 


1.13 














1917 


. . 4.77 


.16 


2.42 7.48 5.73 












1.96 


.92 




1918 


.. 3.76 


1.55 


.85 9.94 5.06 


2.73 


2.34 


3.35 


5.28 


1.90 


1.87 


6.07 


44.70 


1919 


. . 1.26 


1.49 


3.18 2.40 7.44 


2.53 


1.10 


3.22 


2.34 


13.95 


4.13 


1.40 


44.44 


1920 


2.54 


1.13 


5.16 3.46 7.39 


3.20 


8.37 


5.48 


3.69 


1.42 


1.22 


3.64 


46.70 



Data from 1869 thru 1881, and from 1890 thru January, 1898, are for Louisville, 7 miles north 
of Flora. 



1949] CLIMATE OF ILLINOIS: APPENDIX B 277 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


FLORA, Clay county, concluded 


1921 


. 2.14 


1.09 


7.56 


3.67 2.01 


5.31 


1.69 5.58 


6.49 


1.53 


6.22 


4.39 


47.68 


1922 


. 1.01 


1.58 


6.86 


5.85 2.76 


4.11 


3.73 4.17 


1.40 


5.76 


2.04 


5.24 


44.51 


1923 


. 2.87 


1.82 


4.29 


4.70 5.93 


3.05 


1.05 4.58 


3.50 


4.25 


2.07 


5.51 


43.68 


1924 


. 1.96 


1.65 


2.81 


1.96 6.17 


5.66 


2.63 3.78 


3.07 


.32 


1.10 


3.86 


34.97 


1925 


. .83 


1.64 


1.55 


1.97 2.05 


5.19 


.87 3.70 


3.04 


4.25 


4.65 


1.79 


31.53 


1926 


. 1.96 


3.60 


3.34 


6.34 1.47 


1.61 


2.76 3.11 


8.40 


4.98 


3.28 


1.59 


42.44 


1927 


. 3.59 


1.11 


5.03 


5.42 7.12 


2.55 


3.66 4.52 


3.38 


1.89 


4.55 


3.99 


46.81 


1928 


. 1.84 


3.06 


1.74 


2.57 2.99 


8.62 


2.37 2.76 


1.55 


5.81 


3.72 


3.32 


40.35 


1929 


. 3.92 


2.95 


3.64 


5.88 7.99 


6.20 


2.52 6.41 


3.19 


2.62 


3.60 


3.15 


52.07 


1930 


. 7.40 


1.96 


.82 


2.23 1.78 


1.91 


T 2.99 


4.36 


1.88 


2.79 


1.33 


29.45 


1931... 


. 1.06 


1.31 


3.11 


2.59 . 




5.56 6.98 


6.39 


4.06 


5.23 


4.56 




1932 


. 6 04 


1 02 


2 30 


2.37 .79 


3 83 








2 37 


4 97 




1933 


. 3.75 


1.53 


4.81 


3.65 9.71 


1.00 


2.18 2.10 


3.16 


2.84 


1.00 


1.93 


37.66 


1934 


. 1.65 


1.13 


3.02 


3.07 2.02 


2.58 


4.32 3.24 


5.82 


1.44 


7.02 


2.26 


37.57 


1935 


. 3.31 


.69 


6.26 


2.41 9.33 


3.76 


2.48 1.89 


2.69 


2.12 


4.68 


.83 


40.45 


1936... 


.1.17 


2.12 


2.03 


2.10 .87 


3.37 


2.28 .87 


3.28 


3.63 


3.54 


2.27 


27.53 


1937 


. 9.25 


1.70 


1.89 


6.50 3.65 


3.85 


2.04 1.61 


1.83 


6.16 


.87 


4.12 


43.47 


1938 


.1.40 


2.11 


9.74 


3.32 5.40 


2.39 


5.67 3.09 


1.87 


.82 


3.02 


2.38 


41.21 


1939 


. 5.39 


4.25 


2.98 


6.84 2.10 


7.25 


2.81 4.84 


.52 


1.32 


2.20 


2.32 


42.82 


1940: 


. 1.93 


3.01 


2.24 


6.14 2.80 


2.33 


.88 2.51 


.15 


2.30 


4.11 


3.61 


32.01 


1941... 


. 2.33 


.86 


.86 


4.59 2.13 


4.26 


2.90 3.32 


3.09 


5.79 


3.87 


2.25 


36.25 


1942 


. 2.01 


4.40 


5.49 


3.12 3.33 


9.35 


4.22 3.27 


.75 


1.36 


4.65 


1.89 


43.84 


1943 


. 1.38 


1.15 


2.88 


4.29 12.47 


2.83 


2.87 .26 


2.65 


2.78 


2.36 


2.78 


38.70 


1944 


. .12 


4.95 


3.56 


10.08 2.64 


.54 


1.93 5.20 


2.36 


.20 


2.14 


1.35 


35.07 


1945 


. 2.67 


4.93 


10.68 


5.98 5.32 


7.38 


3.05 3.06 


7.93 


2.25 


3.42 


2.22 


58.89 


1946 


. 2.52 


5.27 


1.45 


2.53 9.45 


2.42 


1.27 6.18 


1.47 


4.37 


5.07 


3.03 


45.03 


Aver 


3.00 


2.51 


3.81 


3.95 4.30 


4.21 


3.72 3.57 


3.25 


2.79 


3.22 


2.79 


41.12 


GOLCONDA, Pope county" 


1866... 


.50 


1.20 


5.88 


2.05 3.33 




3.32 1.67 


7.83 


.87 


3.20 


3.48 




1867 


. 1.90 


6.20 


4.50 


.70 6.00 


1.80 


4.40 1.10 


.60 


.90 


3.20 


1.60 


32.90 


1868 


. 2.20 


.60 


4.10 


4.20 3.20 


1.30 


2.10 2.60 


4.70 


1.10 


1.04 


3.30 


30.44 


1869 


. 1.40 


1.20 


9.40 


4.20 2.20 


4.00 


2.00 1.00 


.80 


.60 


1.10 


2.76 


30.66 


1870 


. 4.50 


7.50 


4.60 


3.80 2.10 


3.70 


1.40 2.50 


1.60 










1878 












5 66 1.12 


2.96 


3.74 


4.80 


4.73 




1879 


. 2.48 


2.39 


3.15 


4.08 1.83 


5.95 


3.99 11.31 


1.65 


5.11 


4.48 


8.61 


55.03 


1880 


. 5.67 


5.51 


4.27 


3.74 7.50 


3.57 


6.07 2.65 


4.53 


6.71 


4.37 


1.67 


56.26 


1881... 


. 2.80 


5.85 


2.05 


3.91 3.50 


4.21 


.61 .17 


4.30 


3.69 


5.83 


4.17 


41.09 


1882 


. 6.05 


10.19 


4.72 


3.85 10.24 


4.00 


5.90 11.58 


3.83 


2.81 


5.64 


2.43 


71.24 


1883 


. 3.33 


6.84 


1.57 


6.98 7.13 


6.15 


4.13 1.27 


.71 


6.67 


8.66 


3.66 


57.10 


1884 


. 2.12 


6.61 


4.04 


4.95 4.74 


7.52 


5.49 .49 


5.02 


3.46 


2.07 


8.15 


54.66 


1885 


. 4.82 


1.48 


1.01 


2.86 2.76 


8.82 


2.18 4.86 


5.78 


4.00 


2.67 


3.24 


44.48 


1886... 


. 3.05 


3.01 


3.19 


4.42 4.05 


3.81 


1.35 3.89 


2.69 


.37 


4.97 


1.82 


36.62 


1887 


. 2.14 


5.32 


2.39 


2.89 2.00 


2.66 


1.11 1.71 


5.19 


.64 


4.02 


3.67 


33.74 


1888 


. 3.75 


1.14 


6.59 


2.36 2.99 


7.00 


1.65 4.48 


.72 


2.58 


4.98 


2.14 


40.38 


1889 


. 4.54 


1.15 


1.58 


.95 3.38 


7.27 


5.27 1.57 


4.78 


1.58 


6.58 


2.53 


41.18 


1890 


. 7.35 


7.47 


9.21 


4.79 4.70 


2.17 


.83 2.58 


4.91 


2.90 


7.35 


1.37 


55.63 


1891 


. 4.58 


3.50 


6.62 


1.64 3.05 


4.84 


1.85 6.33 


.38 


.75 


7.94 


3.84 


45.32 


1892 


. 1.07 


2.99 


2.61 


5.57 7.24 


2.68 


4.10 3.94 




2.05 


3.88 


1.58 




1893 


. 2.04 


4.11 


2.43 


8.82 4.92 


3.78 


3.04 2.50 


2.62 


4.63 


3.32 


2.45 


44.66 


1894 


. 3.08 


4.60 


3.54 


3.73 3.07 


1.77 


1.69 2.98 


1.80 


2.02 


1.39 


5.41 


35.08 


1895 


. 3.79 


.38 


3.16 


2.71 




9.03 1.13 


4.04 


.77 


7.20 


3.46 




1896... 


. 1.63 


1.64 


1.36 






1.65 


3.01 


2.79 


4.38 


1.29 




1897 


. 4.49 


5.13 


11.44 


7.65 1.70 


3.58 


3.84 1.01 


.20 


1.29 


4.23 


3.38 


47.94 


1898 


. 7.03 


1.25 


8.93 


4.03 5.17 


2.33 


6.00 1.56 


7.68 


3.90 


2.31 


1.84 


52.03 


1899 


. 6.78 


2.97 


6.12 


3.39 6.20 


3.32 


4.19 3.47 


2.33 


3.62 


2.14 


5.27 


49.80 


1900 


2.17 


4.17 


1.76 


2.62 5.97 


10.14 


2.73 1.73 


2.68 


1.41 


6.52 


2.05 


43.95 



Data from August, 1898, thru 1907 are for Raum, 7 miles north of Golconda. 



278 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GOLCONDA, Pope county, concluded 


1901 


. 1.66 


1.54 


4.10 


3.98 


1.51 .91 1.96 


3.54 


.70 


5.45 


1.94 


4.33 


32.39 


1902 


. . 3.56 


1.80 


2.82 


3.50 


3.33 2.16 1.66 


4.20 


2.83 


1.70 


4.96 


7.16 


39.68 


1903 


. . 2.63 


5.22 


5.90 


2.65 


3.34 1.60 2.76 


2.35 


1.94 


2.83 


1.81 


3.71 


36.74 


1904 


. . 4.87 


2.67 


8.47 


4.01 


2.70 4.01 3.82 


3.35 


6.49 


1.47 


.32 


3.58 


45.76 


1905 


. . 3.71 


2.03 


3.34 


4.12 


6.93 2.04 6.17 


4.30 


3.44 


7.18 


4.34 


4.53 


52.13 


1906 


. . 6.81 


2.13 


7.68 


1.90 


1.99 3.16 2,74 


5.10 


4.11 


2.12 


7.68 


8.89 


54.31 


1907 


. . 8.90 


2.05 


4.04 


3.84 


7.07 4.82 3.70 


6.38 


2.09 


2.68 


4.78 


4.12 


54.47 


1908 


. . 3.58 


10.31 


3.22 


6.39 


4.92 4.85 3.51 


1.93 


1.36 


.11 


4.16 


1.54 


45.88 


1909 


. . 2.78 


9.94 


5.89 


7.05 


4.23 3.93 4.09 


.08 


5.15 


1.39 


4.58 


5.23 


54.34 


1910 


. . 3.08 


3.99 


.30 


6.40 


3.58 3.67 10.75 


3.58 


1.69 


15.46 


1.50 


3.52 


57.52 


1911 


. . 2.66 


2.62 


2.13 


8.60 


.99 2.92 4.52 


5.40 


4.75 


2.38 


4.00 


4.30 


45.27 


1912 


. . 4.57 


3.90 


6.16 


7.04 


3.79 5.23 7.14 


3.49 


2.24 


2.32 


1.42 


2.43 


49.73 


1913 


. .12.66 


2.92 


10.77 


3.60 


1.73 3.07 3.69 


2.94 


3.96 


2.67 


4.77 


1.83 


54.61 


1914 


. . 1.15 


7.23 


3.96 


3.65 


1.96 1.96 1.78 


4.54 


3.81 


3.11 


.72 


3.60 


37.47 


1915 


. . 7.45 


2.48 


1.71 


1.32 


5.27 4.04 4.86 




5.49 


1.12 


4.48 


8.60 




1916 


10 45 


2.20 


2.34 


3.21 


4.33 5.18 .10 














* 
























1923 




















4.90 




1924 


.. 3.16 


2.25 


2.51 


3.04 


4.54 6.22 4.73 


1.86 


3.30 


.15 


1.78 


3.91 


37.45 


1925 


. . 1.34 


3.48 


3.16 


3.23 


.75 6.50 2.86 


.33 


5.73 


9.62 


5.11 


1.01 


43.12 


1926 


. . 3.95 


2.71 


2.02 


4.61 


.55 .99 2.44 


9.64 


2.10 


4.21 


4.26 


3.52 


41.00 


1927 


. . 9.78 


1.55 


7.95 


9.48 


6.60 5.09 3.69 


2.06 


6.41 


4.02 


5.28 


3.68 


65.59 


1928 


. . 1.79 


3.75 


1.67 


5.26 


2.27 12.86 .52 


2.44 


.05 


5.40 


4.70 


3.18 


43.89 


1929 


. . 6.53 


3.61 


3.17 


3.64 


7.64 5.49 3.55 


3.93 


8.17 


1.26 


2.74 


2.68 


52.41 


1930 


. . 8.96 


2.94 


2.66 


.98 


1.64 2.27 1.09 


1.60 


3.26 


1.22 


1.79 


1.83 


30.25 


1931 


.72 


3.20 


4.51 


4.74 


2.66 2.12 1.09 


4.04 


3.46 


2.53 


5.96 


4.25 


39.28 


1932 


. . 7.59 


3.22 


4.65 


3.18 


1.76 2.49 2.01 


5.42 


9.73 


3.27 


3.02 


7.48 


53.82 


1933 


. . 3.52 


4.01 


7.09 


5.05 


4.65 .36 5.47 


1.57 


3.47 


3.64 


.99 


3.45 


43.27 


1934 


. . 1.07 


2.10 


3.43 


2.56 


.69 2.56 3.24 


5.53 


6.22 


1.23 


7.73 


3.00 


39.36 


1935 


. . 3.61 


1.51 


11.01 


2.76 


4.96 12.08 2.80 


2.87 


1.66 


4.55 


3.22 


2.21 


53.24 


1936 


.1.10 


1.61 


3.73 


4.95 


2.47 .61 1.81 


1.53 


5.13 


3.84 


3.81 


3.68 


34.27 


1937 


..18.52 


2.04 


.95 


4.24 


4.19 3.84 3.30 


3.62 


2.36 


5.51 


1.81 


2.81 


53.19 


1938 


,. 4.51 


3.52 


10.21 


1.86 


3.64 4.50 7.14 


6.38 


2.08 


.88 


3.34 


1.66 


49.72 


1939 


. 5.60 


7.78 


5.64 


6.86 


2.41 4.83 2.03 


1.01 


.96 


2.45 


1.63 


1.67 


42.87 


1940 


. . 3.04 


4.95 


2.50 


7.34 


2.39 2.27 .68 


1.98 


1.47 


.49 


5.77 


2.66 


35.54 


1941 , 


. 2.19 


.68 


.53 


1.89 


3.06 1.91 3.88 


3.69 


1.61 


5.58 


2.18 


3.22 


30.42 


1942 


. 3.87 


3.49 


4.64 


4.42 


2.83 3.58 2.71 


8.24 


1.66 


2.08 


5.02 


2.53 


45.07 


1943 


,. .08 


1.36 


6.11 


4.53 


7.01 2.27 6.70 


2.87 


3.01 


1.51 


1.34 


1.97 


38.76 


1944 


. .78 


3.06 


4.82 


5.38 


3.62 1.19 1.25 


2.19 


2.47 


.67 


1.78 


3.88 


31.09 


1945 


. 3.22 


6.57 


11.23 


7.35 


4.95 8.60 3.87 


5.56 


7.06 


1.92 


4.07 


1.52 


65.92 


1946 


, . 3.88 


6.59 


1.52 


2.10 


7.20 .40 4.09 


7.69 


1.22 


1.85 


4.92 


2.52 


43.98 


Aver , 


,. 4.16 


3.69 


4.53 


4.18 


3.89 4.02 3.46 


3.39 


3.38 


2.94 


3.88 


3.49 


45 01 


GRAND CHAIN, Pulaski county 


1923 












6.97 


2.98 


2.51 


3.47 


5.86 




1924 


. 3.14 


2.07 


2.01 


3.01 


5.39 5.96 3.10 


3.66 


1.73 


.03 


1.91 


3.22 


35.23 


1925 


. 1.03 


2.05 


3.01 


1.96 


.81 4.45 .75 


.29 


8.45 


7.87 


6.06 


.79 


37.52 


1926 


. 3.55 


2.26 


2.77 


3.54 


1.36 2.28 1.41 


7.70 


2.32 


4.62 


4.38 


3.84 


40.03 


1927 


. 9.06 


.95 


5.84 


8.08 


7.89 6.67 3.95 


4.49 


4.34 


2.15 


5.27 


4.21 


62.90 


1928 


. 1.35 


2.67 


1.48 


5.07 


1.95 14.13 .60 


3.37 


T 


5.35 


4.78 


3.43 


44.18 


1929 




4.61 


3.37 


3.70 


6.06 6.97 7.01 


3.98 


6.82 


1.69 


2.80 


4.99 




1930 


.10.50 


3.07 


2.08 


1.01 


2.94 3.00 .33 


2.61 


2.23 


1.26 


2.08 


1.78 


32.89 


1931... 


. 1.33 


3.28 


4.46 


3.68 


3.09 1.44 1.58 


2.58 


2.19 


1.96 


5.09 


4.44 


35.12 


1932 


. 7.41 


3.04 


4.70 


4.80 


1.36 2.35 3.89 


5.53 


7.98 


3.86 


2.88 


7.53 


55.33 


1933 


. 3.69 


3.73 


6.58 


5.04 


8.23 .84 7.50 


1.59 


6.15 


3.11 


1.39 


2.35 


50.20 


1934 


. 1.66 


1.85 


3.99 


2.42 


1.26 .70 2.10 


4.12 


9.06 


2.38 


9.25 


3.07 


41.86 


1935 


. 4.56 


1.43 


11.13 


2.68 


7.44 9.32 1.65 


3.05 


1.10 


4.04 


2.37 


1.56 


50.33 



1949] CLIMATE OF ILLINOIS: APPENDIX B 279 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GRAND CHAIN, 


Pulaski county, concluded 


1936... 


. 1.06 


1.60 


4.33 


5.07 2.12 


.84 


2.46 


.92 5.16 


4.10 


2.87 


3.94 


34.47 


1937 


..17.89 


1.85 


1.27 


4.61 5.97 


3.26 


3.59 


.63 2.89 


5.76 


1.99 


2.63 


52.34 


1938 


. . 4 . 72 


3.18 


11.54 


2.19 3.94 


5.05 


5.45 


2.78 .53 


1.20 


3.67 


1.66 


45.91 


1939 


. . 5.10 


8.33 


6.04 


4.65 1.95 


4.15 


1.46 


1.70 1.35 


2.07 


2.03 


2.10 


40.93 


1940 


. 3.02 


3.93 


4.90 


6.59 3.13 


3.01 


2.09 


4.72 1.87 


.66 


5.38 


2.92 


42.22 


1941... 


. 2.61 


.54 


.67 


2.76 1.85 


1.53 


3.61 


4.13 1.54 


6.10 


2.01 


3.60 


30.95 


1942 


. 3 . 56 


4.27 


3.92 


5.45 4.33 


3.64 


1.09 


7.58 1.53 


2.30 


6.05 


1.72 


45.44 


1943 


. .08 


1.44 


5.24 


2.96 6.27 


3.49 


3.02 


2.30 3.41 


1.73 


1.29 


2.04 


33.27 


1944 


, . .64 


3.89 


4.20 


6.65 3.60 


3.02 


1.79 


2.28 1.69 


1.02 


2.59 


4.14 


35.51 


1945 


. 2.44 


6.34 


8.68 


8.73 5.85 


8.62 


3.00 


6.60 6.78 


2.04 


5.40 


1.75 


66.23 


1946 


. 4.27 


5.98 


1.45 


2.47 10.39 


1.54 


1.61 


9.46 1.02 


2.32 


5.49 


3.45 


49.45 


Aver , 


,. 4.21 


3.15 


4.51 


4.22 4.23 


4.19 


2.74 


3.88 3.46 


2.92 


3.77 


3.21 


44.49 


GREENVILLE, 


Bond 


county 










1882... 








. 2.96 


9.45 


3.68 












1883 


. 1.00 


4.50 


3.66 


5.05 6.25 


4.21 


7.50 


3.52 .03 


9.52 


6.62 


2.46 


54.32 


1884 


. . 2 . 10 


8.90 


3.22 


4.16 7.89 


8.15 


6.82 


4.16 6.14 


5.00 


2.38 


7.62 


66.54 


1885 


. 2.80 


1.87 


.03 


5.90 5.19 


5.06 


3.97 


4.92 6.86 


5.42 


2.95 


3.45 


48.42 


1886... 


. . 4.20 


1.85 


4.17 


6.00 6.40 


8.45 


1.90 


4.03 7.24 


.37 


2.80 


3.30 


50.71 


1887 










2.97 


2.21 


1.31 4.09 


1.39 


6.38 


4.68 




1888 


, . 2.68 


2.75 


3.64 


2.28 5.00 


6.52 


6.06 


3.92 1.47 


2.62 


4.59 


3.00 


44.53 


1889 


. 2.65 


2.04 


1.81 


1.70 7.10 


4.43 


3.45 


.58 4.24 


2.50 


5.30 


1.57 


37.37 


1890 


. 9.61 


4.50 


4.21 


4.62 2.58 


2.49 


1.17 


2.60 2.89 


1.00 


2.06 


1.64 


39.37 


1891... 


. 1.50 


3.04 


3.16 


2.24 2.63 


5.91 


.93 


4.37 .41 


1.57 


6.29 


1.52 


33.57 


1892 


. . 2.62 


4.41 


2.37 


7.91 7.79 


5.37 


3.10 


2.64 2.08 


1.53 


4.26 


2.28 


46.36 


1893 


, . .84 


3.72 


3.54 


11.86 5.61 


5.16 


1.68 


.19 3.73 


.49 


1.90 


2.40 


41.12 


1894 


. 2.45 


2.45 


3.53 


3.52 3.31 


1.51 


2.69 


2.31 4.75 


.78 


1.89 


2.73 


31.92 


1895 


. 1.93 


.79 


2.66 


3.19 3.16 


2.64 


6.97 


2.05 3.02 


.77 


4.56 


5.45 


37.19 


1896 


. 3.54 


3.32 


2.37 


2.26 7.28 


5.03 


2.26 


1.50 5.82 


2.80 


5.36 


.82 


42.36 


1897 


. . 4.97 


3.25 


7.50 


3.90 .91 


3.37 


5.69 


1.36 .18 


.59 


7.19 


3.96 


42.87 


1898 


, . 3.97 


4.23 


9.73 


3.58 6.51 


4.28 


4.37 


2.61 3.80 


5.58 


2.26 


1.47 


52.39 


1899 


, . 2.48 


2.00 


3.38 


1.82 5.47 


2.58 


1.89 


4.73 .84 


2.98 


2.13 


3.90 


34.20 


1900 


. 1.41 


4.86 


2.09 


2.27 7.63 


8.39 


2.51 


.51 4.27 


2.04 


4.05 


1.20 


41.23 


1901 


. 1.40 


2.02 


3.32 


2.87 1.96 


2.21 


1.69 


4.40 1.17 


2.35 


1.25 


3.68 


28.32 


1902 


.. .61 


1.37 


4.19 


2.69 2.63 


8.15 


2.02 


4.41 2.43 


3.24 


3.41 


3.92 


39.07 


1903 


. 1.29 


3.48 


3.34 


4.07 1.71 


2.41 


2.29 


2.84 1.84 


2.51 


1.10 


1.80 


28.68 


1904 


. 4 . 25 


1.10 


11.43 


4.19 3.52 


5.33 


5.12 


5.98 5.04 


1.31 


.20 


1.84 


49.31 


1905 


. 1.95 


1.73 


2.14 


3.91 5.07 


4.26 


4.46 


3.44 3.47 


6.17 


1.95 


2.08 


40.63 


1906 


. . 4.50 


3.07 


5.35 


2.72 3.04 


3.65 


1.37 


2.03 5.52 


1.48 


4.25 


2.61 


39.59 


1907 


,. 6.18 


.75 


2.55 


2.73 4.03 


6.20 


5.27 


5.97 .79 


3.28 


1.82 


3.63 


43.20 


1908 


. . 1.46 


5.68 


3.93 


5.35 8.73 


5.29 


4.94 


2.25 .55 


.02 


2.72 


.97 


41.89 


1909 


. . 2.46 


5.83 


1.35 


6.79 4.79 


4.85 


4.45 


1.55 6.21 


4.54 


5.09 


2.36 


50.27 


1910 


. . 1.93 


2.65 


.07 


2.55 3.76 


4.17 


8.01 


3.35 6.47 


5.05 


.32 


.94 


39.27 


1911 


. . 2.55 


3.05 


1.91 


5.18 .86 


2.38 


1.47 


4.04 11.66 


5.59 


3.52 


2.55 


44.76 


1912 


. . .57 


3.60 


5.50 


7.42 3.22 






1.58 


1.65 


1.78 


.52 




1913 


. . 5.01 


.97 


8.33 


2.42 1.04 


5.37 


1.86 


.72 3 . 52 


4.55 


5.48 


1.26 


40.53 


1914 


. . 2.06 


4.10 


.80 


1.62 .54 


1.37 


1.87 


5.31 5.64 


3.35 


1.18 


2.32 


30.16 


1915 


. . 2.84 


2.66 


.62 


1.52 10.08 


5.56 


5.12 


11.19 




1.74 


4.26 




1916 


. . 9.01 


1.70 


2.05 


1.42 3.25 


4.13 


2.04 


8.31 2.34 


1.32 


2.18 


2.26 


40.01 


1917 


. . 1.60 


.41 


1.71 


5.00 5.52 


1.93 


3.69 


1.28 2.01 


2.71 


.49 


.89 


27.24 


1918 


. . 2.09 


1.33 


.76 


7.83 3.37 


1.97 


.98 


4.82 6.78 


3.19 


2.93 


3.11 


39.16 


1919 


. . .32 






1.26 8.37 


6.61 


.30 


.62 2.49 


10.58 


2.38 


.90 




1920 


. . 2.00 


1.18 


4.41 


3.15 4.31 


1.02 


2.98 


3.19 3.52 


.92 


.43 


2.32 


29.43 


1921... 


. 1.01 


.62 


6.20 


5.01 1.04 


4.97 


.65 


2.66 3.89 


1.34 


3.96 


2.63 


33.98 


1922 


. . .77 


.95 


6.16 


7.55 2.38 


2.25 


3.27 


1.09 .44 


3.27 


1.98 


5.04 


35.15 


1923 


. . 1.64 


.90 


4.54 


4.29 3.98 


4.09 


2.32 


5.40 4.47 


3.43 


1.73 


3.53 


40.32 


1924 


.. 1.51 


.82 


1.27 


1.21 5.11 


6.20 


2.32 


3.18 2.85 


.53 


2.15 


3.50 


30.65 


1925 


. . .51 


1.25 


1.28 


1.52 .94 


3.95 


1.46 


1.87 4.26 


4.72 


2.76 


1.63 


26.15 


1926... 


.86 


2.13 


2.18 


1.85 1.25 


2.38 


3.18 


5.86 9.04 


3.62 


3.05 


.98 


36.38 


1927 


. . 3.20 


.52 


4.89 


7.95 4.89 


3.07 


4.12 


2.97 2.81 


4.27 


5.72 


2.74 


47.15 


1928 


. . 1 . 54 


2.30 


1.28 


3.54 2.90 


7.75 


4.13 


2.47 1.70 


4.21 


1.78 


2.14 


35.74 


1929 


. . 2 . 50 


.73 


3.91 


8.08 9.45 


6.25 


2.78 


3.45 1.42 


4.33 


1.48 


2.78 


47.16 


1930 


. . 6.76 


1.89 


1.19 


2.07 2.24 


4.05 


.65 


.89 3.84 


2.02 


1.76 


.35 


27.71 



280 



BULLETIN NO. 532 



[April, 



Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


GREENVILLE, 


Bond county, concluded 


1931 


.25 


1.55 


2.34 


3.63 3.40 


l.ll 


1.59 4.75 


3.71 


3.01 


4.60 


3.22 


33.16 


1932 


. . 3.60 


1.29 


1.28 


2.39 1.84 


3.20 


5.02 9.64 


3.38 


3.12 


1.60 


4.10 


40.46 


1933 


. . 3.06 


1.57 


5.78 


3.76 10.27 


.48 


1.16 2.17 


3.86 


3.77 


.83 


1.96 


38.67 


1934 


. . 2.40 


.75 


3.96 


2.42 1.36 


2.87 


2.26 4.38 


6.06 


2.05 


4.18 


1.62 


34.31 


1935 


. . 2.65 


1.48 


5.42 


2.25 9.99 


3.36 


5.01 .75 


5.19 


2.38 


4.49 


1.45 


44.42 


1936 


. 1.76 


2.22 


2.85 


3. Q8 1.05 


4.13 


1.04 .66 


4.60 


3.67 


2.65 


2.87 


31.48 


1937 


. . 7.06 


1.71 


2.64 


6.46 2.62 


5.42 


5.21 1.65 


2.01 


7.12 


2.08 


3.68 


47.66 


1938 


. . 1.53 


3.40 


11.23 


4.83 5.51 


2.83 


3.53 3.73 


1.92 


1.00 


2.30 


2.18 


43.99 


1939 


. . 4.78 


3.16 


2.58 


6.58 1.67 


4.76 


4.76 8.05 


.95 


1.70 


1.82 


1.85 


42.66 


1940 


. . 1.78 


1.43 


2.27 


4.45 2.29 


2.89 


1.55 6.57 


.28 


2.50 


2.83 


2.10 


30.94 


1941 


. . 2.95 


.93 


.55 


4.61 3.40 


4.73 


3.68 1.58 


5.26 


7.46 


3.45 


2.03 


40.63 


1942 


. . 1.95 


3.85 


2.99 


2.92 4.45 


12.23 


3.98 2.61 


2.31 


3.68 


4.51 


3.31 


48.79 


1943 


. . .67 


.88 


2.77 


2.66 12.25 


4.89 


1.93 1.07 


1.57 


2.35 


2.43 


1.99 


35.46 


1944 


. . .14 


3.53 


3.55 


8.19 7.12 


.67 


2.04 


3.50 


.36 




1.43 




1945 


. . 1.44 


4.83 


9.19 


5.51 3.73 


8.19 


1.20 2.17 


7.11 


2.02 


2.90 


1.85 


50.14 


1946 


. . 1.98 


2.99 


2.12 


2.37 8.44 


3.89 


3.03 12.68 


1.49 


4.76 


8.40 


2.51 


54.66 


Aver 


. . 2 59 


2.47 


3.54 


4.08 4.49 


4.43 


3.14 3.47 


3.54 


3.07 


3.06 


2.52 


40 40 


HARRISBURG, 


Saline county 


1920 


. . 4.54 


1.06 


5.61 


3.90 8.08 


.78 


1.91 7.97 


3.84 


3.41 


2.33 


5.13 


48.56 


1921 


. . 3.07 


3.25 


5.19 


2.69 .82 


2.60 


2.29 5.20 


3.73 


1.82 


9.71 


3.58 


43.95 


1922 


.. 1.11 


2.59 


10.41 


4.56 3.65 


3.74 


4.90 1.50 


2.20 


4.76 


1.82 


5.31 


46.55 


1923 


. . 4.74 


4.53 


3.62 


4.63 6.39 


3.34 


2.75 7.98 


3.82 


2.52 


3.12 


7.18 


54.62 


1924 


. . 2.05 


1.77 


2.02 


2.52 4.63 


5.74 


3.03 2.09 


3.18 


.15 


.89 


3.49 


31.56 


1925 


. . 1.70 


2.82 


2.62 


2.79 1.70 


5.69 


3.49 .42 


5.97 


8.64 


5.82 


.86 


42.52 


1926 


. . 3.32 


1.76 


2.82 


3.29 .80 


1.09 


.91 5.77 


1.71 


3.74 


3.78 


2.53 


31.52 


1927 


. . 6.27 


1.25 


6.64 


8.82 7.61 


5.81 


4.86 1.66 


6.07 


2.11 


5.30 


4.62 


61.02 


1928 


. . 1.80 


2.71 


1.25 


5.88 2.80 


13.95 


3.5? 4.70 


T 


7.38 


4.10 


2.79 


50.95 


1929 


. . 6.21 


4.08 


2.74 


3.98 5.81 


4.73 


3.55 2.70 


7.86 


1.58 


2.61 


4.15 


50.00 


1930 


. . 7.67 


2.82 


2.02 


.82 .95 


2.05 


.40 .60 


5.03 


.47 


1.55 


.95 


25.33 


1931... 


.93 


2.42 


3.94 


2.65 3.49 


1.98 


1.29 4.61- 


2.92 


1.68 


6.09 


3.90 


35.90 


1932 


.. 5.80 


2.39 




2.42 1.05 


2.01 


3.03 7.09 


7.39 


5.30 


2.23 


6.77 




1933 


. . 3.23 


3.27 


4.37 


3.40 9.11 


.57 


4.58 2.32 


4.07 


3.30 


1.05 


1.65 


40.92 


1934 


. . 1.48 


1.55 


3.46 


1.90 1.98 


2.93 


5.68 3.71 


5.00 


2.10 


5.81 


1.84 


37.44 


1935 


. . 3.19 


1.55 


10.10 


3.64 6.19 


6.85 


1.97 1.57 


2.38 


1.70 


1.35 


1.50 


41.99 


1936... 


.1.16 


1.47 


3.55 


3.46 1.27 


1.78 


.57 .40 


4.97 


3.49 


1.40 


3.59 


27.11 


1937 


. .15.13 


1.75 


.73 


4.34 2.88 


8.60 


4.49 .17 


2.47 


4.96 


1.77 


2.99 


50.28 


1938 


. . 3.33 


2.13 


3.75 


2.02 3.18 


4.43 


5.44 1.43 


1.65 


.51 


2.58 


1.08 


31.53 


1939 


. . 4.43 


6.86 


3.36 


6.10 1.91 


5.13 


3.95 2.50 


.72 


2.11 


2.03 


1.45 


40.55 


1940 


, . 2.28 


5.08 


4.00 


6.44 3.34 


1.99 


1.48 1.72 


1.01 


.55 


3.93 


2.20 


34.02 


1941... 


. . 2.77 


.60 


.86 


4.06 1.59 


4.42 


6.48 5.84 


.81 


8.09 


2.60 


2.48 


40.60 


1942 


. 2.64 


2.80 


4.20 


3.52 4.84 


3.48 


3.13 3.72 


1.93 


1.76 


6.55 


1.93 


40.50 


1943 


. .07 


1.26 


7.04 


2.87 6.76 


2.92 


4.44 1.34 


4.27 


1.43 


1.78 


2.47 


36.65 


1944 


.. .85 


3.17 


3.83 


5.93 5.30 


1.13 


.22 3.78 


1.14 


.21 


2.03 


2.80 


30.39 


1945 


. 1.86 


6.07 


11.12 


7.48 2.27 


6.55 


1.80 7.59 


7.46 


3.42 


3.57 


.86 


60.05 


1946 


. 2.51 


3.62 


1.11 


2.04 5.77 


.41 


4.46 9.20 


1.27 


1.95 


4.90 


2.60 


39.80 


Aver 


3.49 


2.76 


4.24 


3.93 3.86 


3.88 


3.14 3.61 


3.44 


2.93 


3.36 


2.99 


41.63 


MASCOUTAH, St. Clair county 


1882 


. 3.50 


7.25 


5.00 


2.65 4.75 


5.81 


5.12 2.37 


4.25 


3.66 


5.74 


2.37 


52.47 


1883 


, . 1.55 


12.25 


3.00 


3.25 6.20 


6.70 


5.60 3.20 




7.60 


3.50 


2.10 




1884 


. 1.42 


6.70 


5.60 


5.30 7.70 


5.50 


1.40 1.60 


3.80 


1.60 


3.40 


6.90 


50.92 


1885 


. 1.10 


.71 


.44 


6.30 2.30 


8.10 


5.00 4.20 


7.10 


6.60 


3.10 


3.74 


48.69 


1886. . . 


. 3.51 


2.59 


3.81 


6.80 5.90 


4.90 


1.20 2.90 


6.90 


.70 


4.92 


2.50 


46.63 


1887 , 


. 1.58 


4.70 


4.80 


3.40 3.80 


1.50 


3.50 1.20 


2.70 


1.50 


5.50 


4.20 


38.38 


1888 


. . 2.70 


3.10 


3.80 


1.50 4.80 


8.70 


1.30 5.60 


1.40 


3.30 


3.20 






1889 


. 2.65 




.80 


2.20 4.90 


5.00 


6.40 1.30 


4.20 


2.40 


4.80 


1.60 




1890 


.10.00 


4.70 


4.62 


8.20 2.80 


3.20 


.30 1.90 


5.30 




2.60 


1.30 




1891 


. 1.65 


3.18 


3.07 


2.50 2.60 


5.30 


.70 7.40 


1.90 


1.30 


6.40 


1.40 


37.40 


1892 


. 2.70 


3.00 


2.45 


9.20 7.70 


6.20 


3.50 1.10 


1.40 


1.40 


3.60 


1.55 


43.80 


1893 


. .74 


2.43 


3.50 


10.20 4.20 


2.80 


2.50 1.30 


5.70 


3.00 


1.60 


.60 


38.57 


1894 


.1.17 


2.21 


2.40 


3.50 4.40 


1.70 


2.00 1.50 


4.50 


.80 


.40 


3.63 


28.21 


1895 


3.36 


1.76 


2.19 


1.60 3.20 


2.10 


4.80 1.70 


1.90 


.50 


3.75 


5.75 


32.61 



1949] CLIMATE OF ILLINOIS: APPENDIX B 281 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MASCOUTAH, St 


. Clair county, concluded 


1896... 


.1.54 


2.41 


2.89 


2.30 


9.70 


5.20 3.80 1.40 


5.80 


1.90 


4.20 


.10 


41.24 


1897 


.. 4.71 


3.59 


9.91 


3.64 


2.27 


4.83 3.27 .14 


1.00 


.40 


4.68 


2.73 


41.17 


1898 


. . 4.03 


2.89 


11.33 


4.21 


6.84 


5.62 4.84 5.57 


3.80 


4.42 


2.43 


1.48 


57.46 


1899 


. . 2.70 


3.45 


2.88 


1.95 


5.56 


3.59 1.94 2.12 


.65 


3.36 


3.50 


3.41 


35.11 


1900 


. .40 


3.99 


3.40 


1.80 


5.50 


5.17 2.65 1.47 


3.32 


1.99 


3.84 


1.44 


34.97 


1901 


.. 1.61 


2.55 


3.10 


2.81 


4.19 


3.10 .76 .73 


1.80 


2.76 


1.44 


3.53 


28.38 


1902 


, . 1.36 


.83 


4.78 


2.70 


3.15 


5.00 2.59 4.40 


2.52 


1.55 


3.53 


3.75 


36.16 


1903 


. . 1.76 


4.74 


2.34 


3.54 


2.12 


3.92 3.83 3.30 


2.83 


3.45 


1.58 


1.44 


34.85 


1904 


.. 3.15 


1.71 


7.78 


4.11 


3.25 


6.90 5.05 7.50 


4.25 


.88 


.70 


1.52 


46.80 


1905 


. . 3.37 


1.84 


2.89 


5.69 


4.66 


1.64 6.07 1.77 


6.66 


6.14 


2.90 


2.23 


45.86 


1906 


. . 4.28 


3.35 


6.22 


2.00 


1.50 


3.04 .90 2.33 


5.12 


1.85 




. 




1907..... 








3.85 


8.19 


3.33 3.61 4.50 


1.74 


2.82 


2.76 


3.45 




1908 


. 1.84 


5.44 


3.30 


5.91 


10.67 


3.85 4.73 2.70 


.81 


.11 


3.28 


.61 


43.25 


1909 


. . 3.04 


4.13 


4.40 


5.62 


4.48 


2.90 7.63 .07 


4.16 


3.22 


4.56 


2.68 


46.89 


1910 


. . 2.33 


3.68 


.02 


4.62 


5.22 


6.42 5.90 5.08 


7.84 


4.54 


.17 


1.51 


47.33 


1911 


.76 


2.89 


2.24 


6.41 


1.68 


1.82 1.58 3.70 


5.85 


3.51 


2.68 


2.00 


35.12 


1912 


.-1.23 


2.28 


5.25 


6.15 


3.59 


6.48 3.60 4.25 


2.67 


1.88 


1.20 


.35 


38.93 


1913 


. . 5.10 




8.81 


2.86 


1.26 


1.92 2.13 1.98 


2.97 


5.15 


3.90 


1.60 




1914 


. . 2.07 


4.15 


1.43 


1.73 


.17 


.70 1.17 6.52 


5.50 


5.58 


1.41 


2.78 


33.21 


1915 


, . 2.42 


2.43 


.57 


1.44 


8.29 


9.07 4.69 12.98 


1.70 


.81 


2.95 


3.17 


50.52 


1916 


,.10.46 


1.33 


1.46 


1.36 


4.05 


4.34 1.32 11.45 


1.54 


2.50 


2.55 


2.98 


45.34 


1917 


. . 3.04 


.07 


1.95 


6.08 


3.68 


2.05 2.80 1.18 


7.14 


2.46 


1.40 


1.33 


33.18 


1918 


, . 1.52 


1.11 


1.18 


8.32 


4.88 


1.70 .42 5.52 


4.59 


3.25 


3.08 


3.55 


39.12 


1919 


. . .22 


1.88 


2.20 


2.51 


5.15 


3.40 .87 5.42 


3.70 


12.25 


3.22 


.93 


41.75 


1920 


. . 2.58 


1.18 


4.28 


3.13 


7.56 


1.96 2.02 6.39 


5.77 


1.66 


.46 


3.10 


40.09 


1921... 


.1.17 


.78 


6.32 


5.84 


3.58 


3.74 .72 2.80 


5.21 


1.54 


4.65 


1.31 


37.66 


1922 


. . .76 


1.51 


5.17 


7.00 


5.04 


2.46 3.41 1.48 


.76 


3 71 




3 62 




1923 


.. 3.15 


1.85 


3.87 


3.94 


4.77 


3.03 2.36 


1.24 


3.61 


1.95 


3.74 




1924 


. . 1.40 


1.32 


3.01 


1.57 


5.14 


6.20 3.42 3.83 


3.35 


.57 


1.29 


6.48 


37.58 


1925 


. . 1.06 


2.11 


1.68 


2.78 


1.58 


5.62 1.46 1.45 


7.67 


5.44 


3.83 


1.69 


36.37 


1926 . . 


. . 1 . 34 


2.30 


3.64 




1.88 


1.20 1.84 4.99 


8 00 


3.09 


3 40 


1.47 




1927 


. . 4.03 


.97 


6.26 


10.98 


7.41 


2.70 2.52 3.68 


2.89 


3.15 


5.77 


2.94 


53.30 


1928 


. . 2.10 


2.82 


1.87 


4.39 


1.63 


6.33 3.36 3.06 


1.10 


2.90 


3.04 


2.58 


35.18 


1929 


. . 2.23 


1.38 


2.64 


6.08 


9.98 


2.30 3.81 2.58 


1.64 


3.16 


2.01 


4.55 


42.36 


1930 


.. 6.71 


2.83 


1.13 


1.78 


2.12 


4.17 1.98 .95 


3.41 


2.01 


1.75 


1.09 


29.93 


1931 


.79 


1.55 




3.11 


3.19 


2.14 4.42 9.37 


4.45 


6.09 


5.17 


3.80 




1932 


. . 3.98 


.84 


1.57 


3.34 


1.52 


4.42 4.26 5.45 


1.10 




2.23 


2.89 




1933 


. . 2.47 


1.27 


3.13 


4.17 


7.97 


.05 1.44 1.51 


4.48 


3.17 


1.35 


1.48 


32.49 


1934 


. . 1.63 


.92 


3.80 


3.43 


1.03 


4.50 1.56 3.57 


7.19 


1.80 


3.84 


2.05 


35.32 


1935 


. . 2.74 


.86 


4.98 


3.57 


6.96 


6.63 5.04 1.36 


4.59 


2.33 


4.43 


1.11 


44.60 


1936 


. 1.95 


2.78 


1.21 


2.03 


1.10 11.41 2.86 .32 


4.08 


3.76 


3.34 


2.31 


27.15 


1937 


. . 5.75 


1.41 


3.04 


5.87 


1.98 


7.20 4.00 1.43 


1.20 


4.58 


1.33 


3.24 


41.03 


1938 


. . 1.12 


3 77 


5.11 


3.2a 


5.57 


4.99 5.04 2.27 


3.39 


.94 


4.68 


2.28 


42.39 


1939 


. . 3.91 


3.63 


2.35 


5.82 


2.79 


4.99 5.21 5.25 


3.02 


1.89 


2.38 


1.62 


42.86 


1940 


. . 1.70 


1.17 


.93 


6.00 


2.00 


1.53 1.53 5.52 


.03 


1.25 


3.61 


3.51 


28.78 


1941... 


. . 2.27 


.71 


.63 


6.62 


1.84 


1.45 1.74 2.51 


9.21 


7.85 


3.50 


1.51 


39.84 


1942 


. . 3.05 


3 37 


2.54 


2.23 


4.25 


7.57 6.65 3.09 


1.71 


3.88 


5.34 


3.60 


47.28 


1943 


. . 1.03 


.7 


2.81 


2.49 


10.64 


5.81 1.54 4.37 


3.09 


2.16 


1.69 


1.64 


38.05 


1944 


. . .26 


3.03 


2.32 


4.44 


4.41 


2.05 3.06 4.91 


2.84 


.62 


1.02 


2.26 


31.22 


1945 


. . 1.16 


3.11 


9.50 


4.78 


4.69 


4.50 .81 1.59 


9.49 


2.98 


2.45 


1.95 


46.99 


1946 


. . 2.19 


3.15 


2.38 


2.97 


5.89 


2.96 1.39 19.01 


2.26 


2.19 


6.02 


1.27 


51.68 


Aver 


. . 2.55 


2.69 


3.52 


4.22 


4.49 


4.24 3.03 3.69 


3.78 


2.98 


3.10 


2.46 


40 75 


McLEANSBORO, Hamilton county 


1882 


. . 2.99 


4.97 


3.22 


2.86 


6.27 


3.93 3.06 7.85 


3.99 


2.82 


2.77 


2.60 


47.33 


1883 


. . 2 . 30 


8.27 


3.32 


3.19 


5.20 


9.13 3.14 2.54 





9.28 


6.64 


3.50 


56.51 


1884 


.. 2.15 


3.87 


2.55 


2.96 


2.80 


5.27 1.78 2.70 


3.80 


1.92 


1.88 


8.24 


39.92 


1885 


. . 4.20 


1.10 


.89 


2.22 


2.51 


4.83 1.74 3.67 


6.02 


3.66 


2.56 


3.50 


36.90 


1886 


. . 3.51 


2.75 


4.10 


4.14 


4.92 


3.82 1.28 2.61 


2.50 


.70 


6.69 


2.69 


39.71 


1887 


. . .98 


3.94 


3.10 


3.43 


3.35 


3.45 3.05 .19 


1.45 


.77 


3.08 


3.29 


30.08 


1888 


. . 2.81 


1.57 


4.77 


1.48 


2.79 


5.83 2.18 7.76 


1.06 


2.28 


4.88 


2.47 


39.88 


1889 


. . 3.20 


2.36 


1.95 


.88 


2.80 


4.31 3.02 


4.33 


1.52 


5.74 


1.77 




1890 


.. 7.12 


5.23 


5.94 


4.03 


4.10 


2.10 5.53 7.05 


4.69 


1.13 




1.38 





282 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


McLEANSBORO, Hamilton county, 


concluded 


1891 






2.08 




1.92 3.59 1.29 


8.51 


.78 


.55 


5.20 


2.35 




1892 


. 1.43 


3.44 


.93 


7.50 


6.92 2.30 1.85 


3.97 




2.11 


4.25 


.98 




1893 


.. 1.12 


3.55 


3.25 


6.02 


5.96 4.54 1.89 


2.12 


2.44 


2.35 


2.48 


1.51 


37.23 


1894 


2 35 


o GO 


3 01 


3 38 


5 33 1 12 .98 














1895 








2.22 


1.99 7.62 7.11 


2.03 


3.00 


.57 


5.57 


2.85 




1896 


. 1.47 


2.24 


4.51 


2.06 


7.06 4.55 4.38 


1.29 


3.91 


1.73 


2.39 


.70 


36.23 


1897 


.. 4.23 


4.00 


11.29 


7.27 


2.53 5.52 3.43 


1.70 


.63 


.45 


5.85 


5.12 


52.02 


1898 


.. 4.98 


1.29 


11.11 


5.38 


6.05 4.99 3.57 


5.15 


2.75 


3.77 


1.26 


1.69 


51.99 


1899 


.. 4.96 


2.61 


4.33 


1.95 


3.82 4.91 5.16 


3.14 


2.02 


4.03 


2.46 


2.36 


41.75 


1900 


1 24 


3.52 




2.08 


5.34 6.13 4.45 


.63 


3.07 


1.53 


3.97 


1.25 




1901 


.'. 1.41 


2.10 


3.79 


2.73 


1.06 2.39 2.87 


2.65 


.94 


2.33 


1.36 


5.20 


28.83 


1902 


.. 1.93 


.96 


3.83 


2.18 


3.30 2.68 2.21 


2.71 


2.44 


.85 


3.65 


5.27 


32.01 


1903 


.. 2.21 


4.86 


3.72 


3.75 


3.38 4.09 1.31 


3.90 


1.71 


3.96 


.98 


2.20 


35.07 


1904 


.. 3.78 


3.49 


8.89 


3.93 


3.32 4.67 5.48 


2.12 


10.11 


.40 


.94 


3.17 


50.30 


1905 


.. 2.61 


1.55 


2.61 


4.25 


3.49 1.81 7.39 


3.30 


3.03 


4.01 


2.66 


3.46 


40.17 


1906 


.. 6.20 


2.74 


5.38 


1.46 


.50 2.89 1.92 


4.35 


5.43 


1.76 


5.32 


6.01 


43.96 


1907 


.. 7.72 


.91 


2.97 


2.16 


3.61 2.89 1.62 


5.80 


1.03 


1.96 


3.83 


4.12 


38.62 


1908 


2 35 


7.55 


4.45 


7.10 


6.60 .65 2.83 


2.17 


' .41 


T 


3.23 


1.33 


38.67 


1909 


. . 3.08 


6 . 63 


4.13 


6.55 


3.66 3.13 6.34 


.31 


3.72 


1.52 


3.44 


3.58 


46.09 


1910 


.. 3.09 


3.09 


T 


2.45 


2.96 3.13 3.57 


2.57 


5.03 


7.84 


.56 


2.06 


36.35 


1911... 


.84 


2.72 


1.51 


7.57 


.86 2.71 1.62 


3.17 


6.19 


1.87 


3.07 


2.48 


34.61 


1912 


.. 2.92 


2.75 


5.40 


6.45 


3.10 4.68 6.76 


4.48 


4.88 


1.49 


2.65 


.93 


46.49 


1913 


.. 9.55 


1.18 


9.91 


3.30 


2.25 1.57 1.40 


1.21 


4.03 


4.52 


2.80 


1.68 


43.40 


1914 








3.77 


.34 1.91 .68 


2.70 


2.94 


3.06 


.28 


3.80 




1915..... 


. . 4.49 


2.63 


.95 


1.64 


8.28 6.83 3.82 


8.87 


1.87 


1.04 


3.07 


6.25 


49.74 


1916 


. . 9.29 


1.90 


1.73 


1.77 


3.11 5.06 2.71 


6.19 


2.15 


2.31 


1.82 


3.88 


41.92 


1917 


.. 5.62 


72 


3.35 


7.56 


4.03 2.90 8.42 


3.13 


3.65 


3.16 


2.40 


1.16 


46.10 


1918 


.. 5.03 


.80 


1.04 


7.11 


7.33 4.40 .32 


7.89 


3.81 


2.64 


2.36 


7.53 


50.26 


1919 


.. 1.00 


1.76 


5.35 


4.63 


5.99 3.60 .45 


3.55 


.95 


10.73 


3.98 


1.21 


43.20 


1920 


. . 2 . 99 


.51 


6.43 


1.97 


7.55 1.51 2.96 


2.85 


3.26 


2.77 


1.73 


4.47 


39.00 


1921 


. 1.80 


1 33 


5.34 


3.50 


2.08 3.52 1.13 


3.70 


6.85 




4.55 


4.44 




1922 


.. 1.84 


1.96 


9.53 


5.31 


2.77 3.37 2.36 


2.14 


.71 


3.15 


1.79 


7.02 


41.95 


1923 


.. 2.48 


3.72 


5.03 


3.99 


5.71 5.06 .76 


5.17 


3.45 


3.74 


2.86 


6.57 


48.54 


1924 


.. 2.04 


1.84 


2.20 


2.68 


3.89 5.94 3.50 


1.17 


3.96 


.26 


1.62 


2.80 


31.90 


1925 


.. 1.32 


3.08 


1.62 


2.35 


2.92 3.97 1.18 


.51 


8.12 


4.38 


6.70 


1.05 


37.20 


1926 


.. 2.74 


2 25 


3.51 


2.39 


1.35 1.02 2.92 


5.76 


6.07 


5.42 


3.74 


2.66 


39.83 


1927 


.. 4.95 


1.11 


6.52 


9.56 


10.02 5.06 3.63 


2.93 


5.44 


2.18 


4.90 


5.21 


61.51 


1928 


.. 1.85 


2.22 


1.42 


3.61 


3.30 8.51 3.13 


3.50 


.48 


6.32 


4.77 


2.85 


41.96 


1929 


.. 6.63 


2.44 


2.96 


3.96 


.41 5.16 3.95 


.67 


3.36 


2.25 


3.09 


5.08 


45.96 


1930 


.. 8.26 


3.74 


2.93 


.71 


1.66 2.08 1.00 


2.51 


10.09 


.74 


2.00 


1.39 


37.11 


1931 


.77 


1.99 


3.12 


3.38 


4.59 1.32 3.48 


7.34 


5.99 


2.59 


5.13 


5.04 


44.74 


1932 


.. 5.96 


1.66 


3.36 


4.26 


1.14 1.51 2.13 


6.85 


7.63 


5.41 


2.22 


8.13 


50.26 


1933 


.. 5.95 


1.67 


4.75 


4.08 


11.25 T 3.55 


1.47 


1.28 


3.27 


.83 


2.04 


40.14 


1934 


.. 1.61 


1.36 


3.17 


3.71 


2.73 2.20 4.57 


5.46 


6.48 


1.51 


6.64 


2.26 


41.70 


1935 


.. 3.41 


.90 


8.96 


4.54 


7.93 7.79 2.84 


3.04 


2.72 


2.24 


3.64 


1.43 


49.44 


1936... 


. 1.35 


1.86 


2.34 


3.46 


1.15 2.00 1.36 


.53 


3.39 


3.94 


3.61 


3.62 


28.61 


1937 


. .12.53 


1.95 


1.21 


3.83 


4.25 6.05 3.13 


2.88 


2.95 


5.40 


2.78 


2.83 


49.79 


1938 


.. 2.43 


2.57 


4.96 


1.74 


3.82 2.86 2.78 


2.28 


4.16 


.48 


4.34 


1.80 


34.22 


1939 


. . 5.15 


4.28 


3.90 


4.34 


2.25 5.04 2.56 


2.67 


.40 


1.62 


2.06 


2.81 


37.08 


1940 


.. 1.80 


4.75 


.84 


6.39 


1.92 1.74 2.28 


1.25 


.77 


.37 


4.08 


3.09 


29.28 


1941... 


.. 2.19 


1.33 


1.29 


3.58 


2.79 3.70 4.47 


3.22 


.87 


9.88 


2.39 


3.47 


39.18 


1942 


.. 2.52 


5.25 


3.50 


2.66 


3.97 3.08 6.00 


1.93 


1.33 


2.43 


4.54 


2.17 


39.38 


1943 


. . .58 


1.51 


4.76 


3.29 


6.68 4.94 


1.55 




2.00 


2.15 


2 29 




1944 


.. .70 


3.14 


4.43 


5.38 


3.33 .28 .98 


2.47 


1.33 


1.59 


2.09 


2.09 


27.81 


1945 


.. 1.30 


6.35 


9.65 


7.86 


3.57 8.13 2.74 


8.91 


7.38 


2.09 


3.80 


1.60 


63.38 


1946 


.. 2.56 


3.24 


1.81 


3.22 


8.56 4.56 4.20 


11.56 


2.13 


1.67 


4.09 


2.44 


50.04 


Aver 


3.42 


2.81 


4.01 


3.89 


4.01 3.84 3.05 


3.61 


3.41 


2.77 


3.30 


3.19 


41.31 


MOUNT CARMEL, Wabash county 


1884... 










. 2.05 


1.29 


5.62 


2.51 


1.97 


7.59 




1885 


.. 3. 8i 


1.48 


.95 


2.71 


2.85 4.38 2.38 


5.16 


8.57 


2.96 


4.28 


2.20 


41.73 



1949] CLIMATE OF ILLINOIS: APPENDIX B 283 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July 


Aug. 


Sept. Oct. 


Nov. 


Dec. 


Annual 


MOUNT 


CARMEL 


, Wabash county, 


concluded 








1886 


. . 4.23 


1.90 


2.30 


3.67 2.89 


3.09 


1.69 


4.14 


2.22 .47 


5.84 


2.61 


35.05 


1887 


. . .87 


4.53 


3.96 


4.52 4.29 


.75 


4.14 


1.61 


2.91 .91 


4.42 


2.80 


35.71 


1888 


. . 3.46 


1.66 


5.94 


1.99 2.50 


3.81 


3.19 


7.15 


.62 2.71 


4.69 


2.15 


39.87 


1889 


, . 3 . 24 


1.76 


1.47 


2.04 5.60 


4.72 


3.60 


2.13 


3.84 2.29 


7.11 


2.82 


40.62 


1890 


. . 8.77 


7.41 


8.27 


3.65 3.19 


3.02 


4.77 


6.14 


4.66 2.35 


5.26 


1.73 


59.22 


1891 


, . 2.83 


6.04 


4.70 


2.05 3.19 


3.53 


1.57 


2.11 


1.22 .48 


5.48 


3.25 


36.45 


1892 


. . 2.40 


4.58 


2.41 


6.40 4.94 


3.85 


2.93 


4.11 


1.80 1.28 


4.26 


1.25 


40.21 


1893 


. . 2.61 


4.81 


4.00 


7.93 4.56 


5.84 


1.41 


1.44 


3.43 3.18 


2.62 


2.02 


43.85 


1894 


,. 2.70 


4.80 


3.87 


3.18 5.29 


2.10 


1.19 


2.61 


2.34 2.14 


.44 


4.48 


35.14 


1895 


. . 5.84 


.50 


2.61 


3.14 2.43 


1.83 


5.77 


1.91 


2.96 .42 


5.75 


3.55 


36.71 


1896... 


.94 


2.40 


5.49 


2.25 9.23 


4.69 


3.96 


2.52 


4.15 2.04 


3.34 


.41 


41.42 


1897 


. . 4.52 


4.10 


10.22 


6.20 3.14 


3.15 


3.10 


.59 


.60 .58 


6.69 


4.88 


47.77 


1898 


. . 6.53 


1.79 


11.35 


4.42 5.82 


8.16 


3.57 


3.28 


3.64 3.53 


2.54 


2.21 


56.84 


1899 


, . 4.93 


4.01 


5.16 


1.15 3.35 


5.65 


3.47 


1.39 


2.03 4.89 


1.82 


3.33 


41.18 


1900 


. . 2.01 


4.41 


2.13 


1.11 4.09 


7.91 


4.17 


1.09 


3.63 1.61 


4.32 


2.09 


38.57 


1901... 


. 1.63 


1.70 


5.20 


3.34 1.84 


4.44 


.32 


1.46 


2.14 4.43 


1.74 


6.07 


34.31 


1902 


. 2.37 


1.10 


2.99 


2.07 2.52 


4.98 


1.65 


2.66 


3.17 1.83 


5.00 


5.82 


36.16 


1903 


. 3.58 


5.46 


4.44 


5.82 2.05 


6.22 


3.46 


2.71 


1.38 3.96 


1.89 


3.44 


44.41 


1904 


. 4.82 


3.50 


12.84 


2.64 1.32 


3.05 


4.46 


4.15 


5.68 .60 


.64 


3.66 


47.36 


1905 


, . 3.28 


2.28 


3.14 


4.82 4.82 


2.39 


7.48 


3.54 


1.26 7.14 


3.00 


3.32 


46.47 


1906 


. 5.85 


2.52 


6.50 


2.16 .82 


3.58 


2.96 


5.82 


5.66 4.42 


7.60 


6.04 


53.93 


1907 


. . 9.39 


1.28 


4.50 


3.48 3.80 


3.64 


3.42 


6.88 


.64 2.02 


4.72 


4.92 


48.69 


1908 


, . 1.44 


8.86 


4.62 


5.96 6.22 


1.16 


1.96 


1.00 


2.04 .10 


2.70 


2.03 


38.09 


1909 


, . 3.20 


6.06 


3.99 


5.90 4.42 


5.69 


4.54 


3.88 


3.16 3 . 74 


2.60 


4.88 


52.06 


1910 


. 3.44 


4.04 


.28 


3.68 3.08 


1.72 


6.83 


3.14 


9.16 8.42 


1.74 


2.34 


47.87 


1911 


. 2.26 


3.02 


1.82 


7.10 2.00 


4.34 


.88 


2.28 


5.44 2.80 


3.36 


2.86 


38.16 


1912 


. . 3.88 


4.25 


5.74 


6.70 3.98 


5.02 


4.28 


5.60 


5.24 1.56 


1.80 


1.10 


49.15 


1913 


. 9.76 


1.16 


12.13 


3.86 2.06 


2.58 


1.84 


1.28 


2.88 3.45 


4.60 


2.54 


48.14 


1914 


, . 1 . 95 


3.82 


3.63 


3.02 .32 


2.21 


1.66 


2.91 


5.97 3.13 


.68 


3.95 


33.25 


1915 


. 4.67 


1.39 


1.17 


.63 6.33 


4.74 


2.31 


7.28 


1.70 1.02 


3.34 


3.94 


38.52 


1916... 


, . 6.42 


1.64 


2.17 


2.20 3.20 


8.15 


2.84 


5.58 


2.07 2.33 


2.47 


4.48 


43.55 


1917 


. . 5 . 34 


.93 


4.39 


5.44 3.70 


4.81 


3.66 


2.98 


.75 3.99 


2.00 


1.93 


39.92 


1918 


. . 4.38 


.80 


.77 


5.83 6.53 


3.34 


4.29 


3.47 


4.21 2.57 


2.41 


7.93 


46.53 


1919 


. . 1.35 


1.51 


4.88 


3.05 6.15 


5.02 


1.23 


1.89 


1.86 11.13 


3.34 


2.28 


43.69 


1920 


. 3.10 


1.40 


6.10 


2.24 7.54 


2.00 


2.56 


5.55 


4.47 2.63 


2.03 


4.24 


43.86 


1921... 


.. 2.21 


1.91 


4.18 


2.21 2.11 


3.64 


2.25 


3.11 


3.01 1.65 


3.74 


4.24 


34.26 


1922 


. . 1.89 


2.01 


10.47 


5.27 5.07 


1.14 


1.93 


1.49 


2.21 2.39 


1.80 


6.28 


41.95 


1923 


, . 2.22 


3.03 


4.41 


3.04 5.43 


5.60 


2.73 


3.90 


2.31 3.72 


3.60 


6.19 


46.18 


1924 


. . 2.98 


1.50 


2.98 


2.05 4.25 


4.34 


3.56 


2.92 


2.36 .24 


2.15 


3.76 


33.09 


1925 


. . .85 


2.82 


2.73 


2.50 1.23 


5.57 


2.75 


2.45 


4.11 5.75 


5.68 


1.41 


37.85 


1926... 


. . 2.92 


3.67 


3.05 


2.52 .64 


1.74 


2.02 


3.02 


5.54 6.28 


3.43 


2.16 


36.99 


1927 


. . 5.56 


.87 


5.40 


8.91 9.57 


3.31 


6.10 


4.98 


6.35 1.51 


4.71 


5.53 


62.80 


1928 


.. 2.16 


2.62 


1.63 


4.12 3.67 


10.04 


.34 


1.95 


.42 5.84 


5.76 


2.60 


41.15 


1929 


. . 6.83 


3.46 


2.93 


4.79 8.19 


4.45 


3.17 


3.32 


3.27 3.06 


2.35 


3.02 


48.84 


1930 




4.62 


2.16 


1.81 .69 


1.82 




2.59 


5.08 


2.21 


2.16 




1931 


.55 


1.95 


4.10 


3.58 2.99 


2.53 


2.05 


7.83 


6.65 5.74 


6.88 


5.52 


50.37 


1932 


, . 7.13 


1.79 


3.55 


5.11 1.00 


2.85 


1.79 


4.07 


6.87 4.98 


4.36 


6.50 


50.00 


1933 


. . 6.27 


1.72 


5.77 


5.08 10.83 


3.72 


5.28 


2.79 


6.18 4.61 


.93 


3.30 


56.48 


1934 


.. 1.81 


1.31 


3.00 


1.18 1.48 


4.15 


4.90 


4.15 


7.03 .53 


4.09 


2.91 


36.54 


1935 


. . 4.22 


.74 


6.92 


3.81 10.03 


4.83 


2.52 


3.19 


1.63 2.16 


3.76 


1.47 


45.28 


1936 


. . 2.09 


2.09 


3.49 


3.26 .89 


2.83 


2.54 


1.03 


2.64 3.93 


4.09 


4.11 


32.99 


1937 


..13.73 


2.33 


1.19 


5.09 3.70 


5.76 


2.54 


5.31 


4.45 6.62 


1.49 


3.02 


55.23 


1938 


. . 2.53 


2.32 


5.89 


3.08 5.09 


2.94 


12.12 


2.16 


1.80 .60 


5.16 


1.64 


45.33 


1939 


. . 5.28 


5.14 


4.14 


8.23 1.86 


5.88 


3.80 


4.17 


1 . 03 1 . 34 


2.11 


2.01 


44.99 


1940 


. . 2.01 


4.02 


1.07 


7.74 3.15 


2.95 


.86 


1.15 


1.25 .46 


4.16 


2.34 


31.16 


1941 


. 1.74 


.85 


.97 


2.91 2.70 


3.79 


5.03 


2.31 


1.37 10.29 


3.14 


3.39 


38.49 


1942 


. . 2.12 


3.79 


4.73 


2.53 3.48 


7.05 


3.39 


2.78 


1 . 56 1 . 65 


4.98 


2.25 


40.31 


1943 


. . .26 


1.87 


4.54 


3.91 8.20 


5.98 


6.67 


.75 


2.98 2.07 


1.83 


2.18 


41.24 


1944 


. . .51 


3.62 


4.05 


7.58 5.02 


1.65 


.81 


3.53 


2.33 .28 


2.45 


2.34 


34.17 


1945 


. . 1.89 


6.77 


13.46 


7.29 4.14 


9.27 


4.25 


7.52 


7.68 1.17 


3.83 


3.07 


70.34 


1946 


.. 2.21 


3.07 


1.47 


1.90 9.86 


5.05 


5.11 


8.71 


1.78 1.73 


4.47 


2.62 


47.98 


Aver 


. . 3 . 67 


2.95 


4.43 


3.97 4.12 


4.17 


3.29 


3.40 


3.41 2.97 


3.52 


3.38 


43.28 



284 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


MOUNT VERNON, 


Jefferson county 


1895 








2.21 


1.94 


5.94 3.15 


3.13 


.27 


4.66 


3.80 




1896 


. 1.77 


1.95 


4.05 


1.67 7.64 


3.37 


3.30 3.06 


6.19 


1.86 


3.10 


.29 


41.25 


1897 


. . 3.57 


3.39 


10.18 


4.47 1.30 


7.49 


3.00 .77 


.41 


.56 


4.00 


1.89 


41.03 


1898 


. . 5.86 


1.60 


11.94 


3.54 5.86 


5.28 


6.43 3.18 


4.54 


4.41 


2.14 


2.12 


56.90 


1899 


. . 3.26 


3.38 


2.90 


2.27 4.19 


1.94 


4.98 2.40 


.90 


3.95 


1.30 


2.19 


33.66 


1900 


. . 1.08 


2.94 


1.43 


1.48, 5.37 


8.35 


3.72 1.81 


4.07 


1.56 


3.49 


1.67 


36.97 


1901 


. 1.37 


2.54 


3.79 


2.51 1.23 


2.32 


.69 3.29 


1.53 


2.25 


1.79 


4.05 


27.36 


1902 


. . 1.45 


.92 


3.92 


1.42 5.14 


5.35 


2.81 2.85 


3.26 


.28 


4.47 


4.91 


36.78 


1903 


. . 1.66 


3.37 


3.15 


3.66 2.54 


4.89 


.94 2.87 


1.94 


3.20 


.84 


2.68 


31.74 


1904 


. . 3.33 


2.58 


10.01 


3.79 5.50 


5.17 


5.66 3.99 


4.22 


.56 


.81 


3.10 


48.72 


1905 


. . 2.42 


1.44 


3.18 


4.92 3.55 


2.14 


7.97 2.75 


4.24 


5 X7 


2.52 


3.89 


44.89 


1906 


. . 3.74 


2.78 


5.58 


1.58 1.68 


2.75 


1.07 2.27 


6.50 


1.87 


6.90 


3.18 


39.90 


1907 


.. 8.15 


1.00 


3.38 


3.22 4.39 


5.50 


3.98 6.61 


.97 


3.49 


3.64 


3.50 


47.83 


1908 


.. 2.16 


6.63 


5.42 


6.18 6.23 


1.41 


3.87 1.83 


.92 


T 


2.33 


1.01 


37.99 


1909 


. . 3.82 


5.17 


4.98 


7.50 4.45 


7.13 


4.03 .30 


3.72 


1.55 


3.23 


2.81 


48.69 


1910 


. . 2.27 


5.71 


.02 


3.43 2.61 


1.75 


5.97 2.07 


9.21 


6.65 


1.83 


1.70 


43.22 


1911 


. 1.23 


2.80 


1.59 


6.25 1.06 


2.08 


1.44 3.68 


7.51 


2.62 


2.63 


3.10 


35.99 


1912 


. . 1.38 


4.25 


3.94 


3.81 4.67 


5.64 


5.98 4.68 


3.60 


.74 


2.46 


.69 


41.84 


1913 


. . 8.76 


1.05 


8.84 


2 . 94 1 . 89 


4.57 


1.44 .80 


4.20 


4.66 


3.84 


1.83 


44.82 


1914 


. . 2.65 


3.57 


2.86 


2.34 .35 


1.54 


.51 6.38 


3.95 


4.93 


.20 


3.40 


32.68 


1915 


.. 4.16 


2.48 


.76 


.92 7.61 


4.60 


2.73 9.87 


1.68 


.50 


2.34 


4.76 


42.41 


1916 


. . 8.25 


1.36 


1.55 


1.11 4.35 


4.02 


2.05 7.91 


2.65 


2.37 


1.64 


3.33 


40.59 


1917 


5.11 


.80 


2.29 


6.52 3.66 




2.52 


.44 


2.95 


1.40 


2.20 




1918 


. . 2.56 


1.47 


.51 


7.41 5.32 


2.12 


.70 4.17 


4.41 


2.34 


2.67 


5.47 


39.15 


1919 






2.84 


4.24 7.36 


6.05 


.53 3.66 


2.16 13.91 


2.63 


.99 




1920 


. . 2.55 


.75 


6.32 


4.33 6.36 


5.54 


2.97 3.46 


3.60 


1.62 


1.13 


3.57 


42.20 


1921 


.. 2.04 


1.38 


6.59 


3.52 2.67 


4.11 


.12 5.37 


4.49 


.95 


5.82 


4.45 


41.51 


1922 


.. 1.11 


2.02 


7.87 


4.80 1.14 


5.00 


4.58 1.81 


.64 


4.90 


2.00 


5.16 


41.03 


1923 


. . 2.43 


2.10 


4.97 


2.61 5.50 


3.55 


1.70 6.46 


3.00 


3.54 


2.58 


5.88 


44.32 


1924 


. . 1.95 


.66 


2.64 


1.97 4.56 


5.46 


3.33 1.67 


3.52 


.53 


.66 


3.39 


30.34 


1925 


. . .83 


2.60 


1.82 


2.08 3.46 


6.42 


.71 .55 


3.51 


5.56 


4.19 


1.75 


33.48 


1926 


. . 2.03 


4.13 


3.16 


3.02 1.31 


1.60 


1.97 6.30 


6.50 


7.42 


2.98 


2.03 


42.45 


1927 


. . 3.98 


.84 


5.81 


6.20 8.21 


3.87 


4.27 8.25 


3.41 


?: 77 


4.92 


4.02 


56.55 


1928 


. . 1.77 


3.43 


1.46 


3.16 5.28 10.85 


1.49 5.02 


2.02 


6.69 


3.64 


3.53 


48.34 


1929 


. . 3.58 


1.76 


3.11 


4.05 7.75 


5.80 


2.25 2.46 


4.02 


2.74 


1.93 


3.65 


43.10 


1930 


. . 7.20 


2.79 


1.18 


1.75 1.93 


2.71 


.53 4.11 


9.95 


2.06 


2.27 


1.29 


37.77 


1931 


.48 


1.44 


3.20 


3.11 4.05 


1.82 


2.04 5.59 


5.34 


4.85 


5.44 


4.54 


41.90 


1932 


. . 5.28 


1.00 


2.71 


3.08 1.87 


3.92 


2.71 6.93 


4.59 


5.14 


2.12 


4.90 


44.25 


1933 


. . 2.78 


1.17 


5.28 


5.12 10.78 


.14 


2.98 1.38 


3.14 


2.24 


1.00 


2.60 


38.61 


1934 


. . 1.93 


1.27 


4.03 


3 . 63 1 . 52 


3.48 


5.44 5.16 


7.46 


2.06 


7.44 


1.78 


45.20 


1935 


. . 3.54 


.81 


6.94 


4.77 6.35 


6.64 


5.64 2.11 


4.16 


2.73 


7.02 


1.42 


52.13 


1936... 


. 1.81 


1.93 


1.64 


2.78 .93 


2.54 


.46 .76 


3.05 


4.36 


3.94 


3.12 


27.32 


1937 


..11.48 


2.33 


1.64 


7.74 5.31 


5.42 


3.65 1.08 


3.20 


4.04 


1.60 


3.75 


51.24 


1938 


. . 3.06 


3.43 


8.83 


2.82 5.23 


3.15 


1.63 5.29 


2.39 


.52 


2.01 


1.59 


39.95 


1939 


. . 5.74 


5.87 


2.90 


7.95 2.84 


3.96 


2.85 3.19 


.66 


1.83 


2.48 


2.30 


42.57 


1940 


. . 2.91 


2.83 


1.52 


5.06 2.96 


2.63 


.78 2.04 


.23 


1.97 


4.11 


3.47 


30.51 


1941... 


. 3.30 


1.63 


1.28 


3.39 1.93 


4.02 


2.28 1.53 


1.84 


8.25 


3.58 


1.55 


34.58 


1942 


. . 1.82 


2.98 


4.73 


3.69 4.87 


5.24 


5.02 2.57 


.58 


2.04 


4.47 


2.30 


40.31 


1943 


. . .60 


.92 


3.23 


3.67 8.67 


7.48 


1.14 .55 


4.78 


2.68 


2.59 


1.94 


38.25 


1944 


. . .12 


2.73 


3.92 


6.46 4.69 


1.48 


1.89 6.14 


2.90 


.78 


2.03 


2.60 


35.74 


1945 


, . 2.24 


5.80 


12.04 


6.69 4.64 


7.27 


.36 7.78-10.18 


2.29 


1.98 


1.80 


63.07 


1946 


. . 2.23 


4.75 


2.22 


4.08 8.83 


2.03 


1.43 14.37 


1.61 


3.58 


4.31 


1.81 


51.25 


Aver 


.. 3.18 


2.53 


4.12 


3.90 4.30 


4.19 


2.82 3.85 


3.60 


3.10 


2.98 


2.86 


41.43 


NASHVILLE 


, Washington county 


1911... 




















2.18 




1912 


. . 1.43 


2.24 


4.60 


5.60 3.34 


4.08 


4.73 3.76 


2.72 


2.66 


1.66 


.56 


37.38 


1913 


, . 7.57 


.88 


7.17 


3.03 1.78 


1.86 


1.32 2.02 


2.87 


6.25 


3.98 


1.76 


40.49 


1914 


. 2.64 


4.07 


3.74 


3.23 .35 


1.13 


.46 5.79 


2.26 


5.16 


.90 


3.29 


33.02 


1915 




2.98 


.39 


.88 6.90 


8.11 


4.43 8.68 


1.34 


.66 


2.60 


3.61 





1949] CLIMATE OF ILLINOIS: APPENDIX B 285 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


NASHVILLE, Washington 


county, concluded 


1916... 


.10.32 


1.16 


1.27 


1.38 


4.34 5.12 3.45 


9.54 


2.03 


2.68 


1.83 


4.84 


47.96 


1917 


. 3.59 


.12 


2.45 


7.88 


5.72 3.43 2.29 


3.00 


2.04 


4.28 


1.75 


1.26 


37.81 


1918 






.73 


9.77 


5.92 1.84 .57 


3.03 


5.34 


2.45 


2.27 


4.53 




1919 


.90 


1 91 


4.68 


2.45 


4.68 9.97 1.27 


8.07 


2.10 


14.04 


4.65 


.73 


55.45 


1920 


. 2.66 


.96 


5.39 


2.86 


6.83 1.06 2.12 


3.46 


3.11 


2.38 


.52 


3.52 


34.87 


1921... 


. . 2.67 


1.98 


7.08 


5.09 


2.30 4.40 .32 


5.01 


6.21 


1.53 


4.21 


2.94 


43.74 


1922 


. 1.11 


1.45 


6.08 


5.36 


2.58 1.88 3.74 


3.52 


1.16 


4.99 


2.05 


4.81 


38.73 


1923 


. 2.85 


2.03 


4.93 


3.54 


6.46 2.00 2.86 


5.36 


4.23 


3.24 


2.43 


3.13 


43.06 


1924 


. 1.54 


1.31 


2.78 


1.56 


3.78 5.57 3.27 


2.72 


2.50 


.67 


1.02 






1925 


. .68 


1.68 




2.50 


.92 4.03 1.58 


1.76 


3.25 


5.98 


3.39 


1.26 




1926 


. 1.67 


2 25 


2.56 


2.49 


1.52 2.30 


5.37 


5 49 


3 06 


3 03 


1 50 




1927 


. . 3.98 


1.15 


6.41 


8.45 


7.96 2.66 4.34 


6.05 


3.50 


2.48 


5.87 


3.14 


55.99 


1928 


. 1.38 




2.32 


3.68 


3.10 7.54 2.59 


4.38 


1.40 


3.66 


2.75 


2.31 




1929 


. 3.55 


1.80 


2.94 


4.44 


8.35 4.49 1.67 


1.97 


2.68 


3.15 


2.44 






1930 


. 7.45 


1.81 




1.59 


2.05 1.90 1.34 


.87 


4.29 


2.55 


2.02 


1.24 




1931 


. .42 


1.59 


2.51 


2.40 


3.43 1.51 6.53 


7.52 


3.44 


5.81 


4.02 


3.59 


42.77 


1932 






2.17 


2.87 


1.84 3.21 2.22 


4.88 


1.97 


4.12 




3.41 




1933 


. 2.50 


1.32 


3.66 


4.26 


7.75 .19 2.58 


1.50 


2.56 


3.49 


86 


1.49 


32.16 


1934 


. 1.70 


1.15 


3.33 


4.06 


2.77 2.44 3.64 


3.64 


6.52 


2.41 


4.52 


2.22 


38.40 


1935 


. 2.54 


.86 


6.00 


4.01 


7.45 7.21 1.82 


1.12 


2.69 


1.41 


4.41 


1.31 


40.83 


1936 


. 1.40 


1.75 


1.18 


2.23 


.94 3.43 1.11 


.18 


4.36 


3.45 


2.77 


2.66 


25.46 


1937 


. 8.24 


1.43 


1.34 


5.48 


2.03 5.00 3.96 


1.93 


2.83 


4.72 


1.48 


3.78 


42.22 


1938 


. 1.50 


3.50 


6.44 


1.72 


4.91 5.43 1.82 


4.89 


2.97 


.84 


2.01 


2.06 


38.09 


1939 


. 3.91 


3.07 


3.18 


6.50 


2.74 4.17 5.97 


3.50 


2.12 


1.83 


1.64 


1.48 


40.11 


1940 


. 1.97 


1 91 


1.18 


4.89 


2.11 1.65 1.68 


2.55 


.83 


2.83 


4.12 


3.00 


28.72 


1941... 


. 2.82 


.75 


.68 


5.53 


1.80 5.48 1.12 


1.57 


5.24 


6.71 


4.48 


1.60 


37.78 


1942 


. 2.28 


3.14 


3.25 


2.17 


4.44 7.44 3.74 


1.30 


.84 


3.83 


5.79 


2.98 


41.20 


1943 


. .73 


.87 


1.90 


3.28 


11.73 6.11 2.93 


2.63 


3.01 


2.67 


2.09 


2.22 


40.17 


1944 


. .29 


2.73 


3.16 


5.39 


4.48 1.41 2.80 


2.82 


1.78 


1.12 


1.52 


1.63 


29.13 


1945 


. 1.38 


4 37 


10.12 


5.49 


4.71 11.21 .62 


3.48 


7.71 


2.26 


3.60 


1.48 


56.33 


1946 


. 1.86 


3.83 


1.54 


4.12 


7.86 3.45 2.78 


21.18 


1.96 


1.88 


4.96 


2.16 


56.58 


Aver 


2.89 


2.00 


3.66 


4.12 


4.50 4.17 2.65 


4.38 


3.22 


3.57 


2.87 


2.46 


40.49 


NEW BURNSIDE, Johnson county 


1895 






2.65 


2.20 


1.98 2.24 5.51 


1.26 


2.81 


.60 


7.03 


2.05 




1896 


. 1.33 


1.20 


2.86 


3.36 


9.44 5.90 4.90 


2.54 


2.54 


1.74 


3.14 


.68 


39.63 


1897 


. . 2.70 


3.35 


10.97 


5.82 


1.10 4.15 5.81 


.81 


1.18 


1.20 


4.07 


2.71 


43.87 


1898 


. . 4.67 


1.07 


8.51 


3.76 


7.28 2.77 5.82 


3.28 


4.33 


4.35 


.99 


2.24 


49.07 


1899 


. . 5.36 


2.63 


4.91 


4.04 


5.37 2.22 4.72 


1.42 


1.53 


5.18 


1.86 


3.78 


43.02 


1900 


.. 1.84 


3.36 


1.89 


2.08 


3.90 9.08 3.43 


.77 


2.36 


2.74 


3.99 


1.61 


37.05 


1901 


. 1.01 


2.14 


3.72 


3.63 


1.63 1.34 .33 


2.81 


1.00 


3.92 


1.70 


4.85 


28.08 


1902 


. . 2.89 


.77 


3.08 


3.49 


3.20 3.40 2.04 


4.33 


5.07 




5.71 


6.03 




1903 


. . 1.01 


4.90 


6.21 


2.76 


3.06 3.13 1.43 


2.13 


.89 


3.35 


1.06 


3.19 


33.12 


1904 


. . 4.49 


2 92 


7.48 


5.06 


3.11 3.83 5.24 


2.33 


5.31 


1.74 


.51 


3.20 


45.22 


1905 


.. 2.61 


1.72 


2.72 


5.25 


5.59 2.31 10.39 


3.00 


2.96 


6.44 


2.74 


3.58 


49.31' 


1906 


. . 6.65 


2.54 


6.68 


1.32 


1.66 3.11 4.76 


4.88 


5.43 


.86 


8.33 


8.31 


54.53 


1907 


. . 9.97 


2.11 


3.77 


2.84 


4.85 5.26 4.72 


5.56 


1.28 


3.10 


4.30 


3.16 


50.92 


1908 


. . 2.84 


7.67 


3.18 


6.52 


5.31 1.94 3.74 


3.13 


1.31 


T 


4.85 


.62 


41.11 


1909 


.. 2.60 


5.35 


3.92 


5.45 


4.01 4.67 3.28 


.15 


5.47 


.83 


4.09 


3.06 


42.88 


1910 


. . 3.06 


3.05 





4.80 


2.96 2.95 7.38 


1.81 


1.70 


12.48 


.23 


2.93 


43.35 


1911... 


T 


1.84 


1.78 


11.22 


1.78 2.78 3.17 


4.09 


5.45 


2.94 


2.14 


2.38 


39.57 


1912 


.. 3.16 




4.66 


5.84 


3.65 4.70 3.14 


4.04 


3.50 


1.77 


1.58 


1.39 




1913 


. . 9.33 


1.16 


6.95 


3.43 


1.64 .66 5.55 


1.09 


4.01 


6.43 


4.19 


1.61 


46.05 


1914 


. . 2.06 


5.75 


3.18 


2.49 


1.50 1.53 1.97 


1.82 


3.83 


4.20 


.80 


3.46 


32.59 


1915 


. . 4.85 


2.83 


1.26 


1.18 


6.51 5.15 1.88 


9.76 


2.82 


2.43 


3.58 


8.86 


51.11 


1916 


..10.38 


1.69 


2.17 


3.87 


2.12 5.90 1.69 


6.22 


2.11 


2.16 


2.02 


4.97 


45.30 


1917 


.. 5.13 


1.65 


4.15 


7.81 


4.63 3.54 2.49 


4.56 


1.53 


2.43 


2.23 


2.11 


42.26 


1918 


. . 5.53 


.63 


1.46 


7.14 


9.20 1.24 .71 


5.38 


5.09 


2.32 


2.96 


7.22 


48.88 


1919 


. . 1.41 


1.68 


6.61 


3.43 


6.50 3.47 1.32 


2.95 


2.06 


10.41 


6.46 


1.81 


48.11 


1920 


. . 4.46 


1.25 


7.88 


3.06 


9.25 .86 2.87 


2.83 


1.65 


3.09 


1.29 


5.92 


44.41 



286 
Table 


BULLETIN NO. 532 

11. SOUTHERN ILLINOIS: Monthly 


[April, 

and Annual Precipitation 


(Continued) , 


Year 


Jan. 


Feb. Mar. 


Apr. 


May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


NEW BURNSIDE, 


Johnson county, 


concluded 


1921... 


. . 3.14 


3.30 6.08 


4.90 


2.60 


3.05 


1.20 6.31 


7.09 


2.56 


8.00 


3.73 


51.96 


1922 


. . 1 . 20 


2.80 11.79 


5.03 


3.90 


3.02 


3.33 2.01 


.77 


3.31 


2.18 


4.82 


44.16 


1923 


.. 5.41 


3.91 4.15 


5.12 


6.89 


3.84 


.44 8.97 


5.00 


3.31 


3.05 


7.55 


57.64 


1924 


. . 2.50 


1.95 2.11 


3.09 


4.92 


7.02 


5.06 2.59 


3.11 


.17 


1.55 


3.69 


37.76 


1925 


.. 1.71 


3.25 2.91 


3.15 


1.01 


6.01 


2.62 .93 


6.78 


6.90 


5.96 


1.26 


42.49 


1926... 


. . 3.35 


2.07 3.05 


3.65 


< 1.55 


.77 


1.46 8.12 


2.92 


4.66 


4.59 


3.26 


39.45 


1927 


. . 7.37 


1.44 7.54 


9.60 


7.28 


6.20 


6.83 1.58 


5.24 


4.02 


5.63 


5.96 


68.69 


1928 


. . 2.02 


2.97 1.62 


7.13 


3.00 


16.15 


2.31 2.96 


.44 


6.68 


4.94 


3.00 


53.22 


1929 


. . 7.50 


4.28 3.52 


4.64 


6.32 


7.03 


3.93 2.87 


6.87 


1.66 


3.14 


4.53 


56.29 


1930 


.. 9.11 


2.75 2.63 


1.14 


1.62 


3.82 


1.02 .84 


5.25 


2.64 


2.41 


1.39 


34.62 


1931... 


.1.16 


2.77 4.55 


4.15 


4.13 


1.50 


1.86 5.63 


2.25 


1.47 


6.48 


4.13 


40.08 


1932 


. . 7.04 


2.92 5.46 


3.45 


.67 


2.55 


4.09 9.25 


8.98 


5.68 


2.50 


7.07 


59.66 


1933 


. . 3.87 


3.41 6.54 


4.08 


10.21 


3.45 


4.97 2.25 


4.47 


3.16 


1.52 


1.60 


49.53 


1934 


. . 1.81 


1 . 86 3 . 66 


2.34 


.90 


4.06 


2.51 4.62 


8.76 


2.02 


9.62 


2.42 


44.58 


1935 


, . 3.99 


1.37 9.98 


2.57 


5.89 


13.28 


1.67 2.38 


2.30 


3.12 


3.01 


1.93 


51.49 


1936 


. 1.33 


2.10 3.36 


4.71 


1.23 


1.15 


2.26 .31 


7.59 


3.40 


4.03 


4.18 


35.65 


1937 


..16.94 


1.95 1.00 


5.43 


3.84 


7.49 


4.24 .52 


3.55 


5.80 


2.30 


3.40 


56.46 


1938 


. . 4.38 


2.73 5.49 


1.66 


4.03 


4.78 


4.42 2.39 


2.43 


.83 


3.27 


1.67 


38.08 


1939 


. . 5.05 


8.39 4.54 


6.08 


3.56 


5.66 


5.33 2.37 


1.52 


2.00 


2.12 


1.76 


48.38 


1940 


, . 2.23 


5.01 4.06 


7.64 


3.43 


1.42 


1.57 3.05 


1.19 


.60 


5.03 


2.97 


38.20 


1941 


. . 2.83 


1.09 .75 


3.96 


1.16 


1.82 


1.44 4.54 


1.96 


7.11 


2.64 


3.84 


33.14 


1942 


. . 3.52 


3.96 4.81 


5.09 


5.01 


6.15 


3.87 7.14 


1.25 


1.96 


7.19 


2.07 


52.02 


1943 


. . .34 


1.49 8.64 


4.48 


9.05 


4.61 


3.11 1.39 


5.16 


2.21 


1.39 


2.18 


44.05 


1944 


. . .72 


3.35 4.53 


6.29 


4.53 


.96 


.33 2.25 


1.14 


.87 


2.04 


4.09 


31.10 


1945 


. . 2.12 


7.39 11.75 


11.87 


2.97 


10.10 


1.81 7.23 


7.52 


2.97 


4.14 


1.47 


71.34 


1946 


, . 3.58 


4 . 50 1 . 62 


2.96 


8.59 


.53 


3.54 10.26 


1.34 


2.08 


5.53 


2.71 


47.24 


Aver 


. . 3.99 


2.93 4.59 


4.54 


4.22 


4.13 


3.34 3.57 


3.50 


3.20 


3.58 


3.43 


45 11 


OLNEY, 


Richland county 


1887... 


.1.16 


. 6.00 


5.44 


4.44 




2.51 1.82 


2.80 


.75 


5.52 






1888 


. . 1.93 


1.57 5.25 


1.80 


2.61 


4.41 


5.64 9.78 


.91 


2.82 


7.06 


2.65 


46.43 


1889 


. . 2 . 73 


2.66 1.91 


1.23 


4.70 


5.71 


7.59 3.32 


5.09 


2.71 


4.66 


3.96 


46.27 


1890 


. 7.21 


4.48 6.52 


3.81 


3.95 


4.37 


1.25 4.44 


5.84 


1.38 


2.46 


2.16 


47.87 


1891 


, . 2.06 


5.48 4.23 


2.74 


1.30 


3.54 


.56 4.41 


1.33 


1.45 


6.71 


2.37 


36.18 


1892 


. . 1.35 


4.15 1.56 


7.85 


5.11 


2.07 


4.14 3.26 


.76 


.82 


3.39 


1.03 


35.49 


1893 


, . .64 


3.73 4.05 


10.44 


4.14 


5.38 


.96 2.65 


3.95 


1.97 


3.10 


1.74 


42.75 


1894 


, . 2 . 27 


3.19 3.06 


2.80 


5.20 


1.39 


2.28 2.63 


2.42 


2.02 


.47 


3.34 


31.07 


1895 


, . 4.25 


.45 1.40 


2.15 


1.78 


3.00 


5.85 1.48 


2.06 


.13 


4.40 


3.47 


30.42 


1896 


.89 


2.21 3.07 


1.52 


6.13 


3.82 


8.67 .47 


4.57 


1.69 


5.56 


.46 


39.06 


1897 


. 3.77 


2.92 11.77 


6.49 


2.75 


4.48 


2.85 .40 


.71 


.52 


6.57 


3.86 


47.09 


1898 


. . 5.22 


1.93 10.97 


5.00 


4.38 


1.10 


4.76 3.58 


4.41 


3.06 


2.14 


1.89 


48.44 


1899 


. 3.98 


2.81 3.03 


.99 


2.93 


3.95 


2.82 2.92 


.93 


2.86 


1.82 


2.66 


31.70 


1900 


. .93 


2.99 2.37 


1.21 


3.14 


6.29 


4.15 1.36 


3.67 


1.58 


2.54 


1.67 


31.90 


1901 . . . 


. 1.00 


2.88 4.24 


2.58 


3.09 


2.56 


.25 2.45 


1.07 


2.49 


1.27 


5.16 


29.04 


1902 


. 1.41 


.69 2.64 


1.51 


1.85 


4.70 


3.07 3.20 


2.14 


1.33 


3.51 


4.01 


30.06 


1903 


. . 2.94 


4.02 3.66 


4.96 


.94 


3.57 


4.46 2.49 


.42 


1.99 


1.35 


2.87 


33.67 


1904 


. . 4.00 


2.05 10.60 


2.20 


6.56 


3.06 


2.27 1.76 


6.13 


.53 


.94 


4.02 


44.12 


1905 


. 2.89 


1.29 2.61 


3.74 


3.11 


2.09 


4.13 4.40 


2.07 


8.70 


1.65 


2.41 


39.09 


1906... 


, . 3.37 


2.33 4.84 


1.93 


1.29 


3.21 


3.97 3.77 


7.75 


2.98 


5.55 


4.19 


45.18 


1907 


. 7.53 


.52 4.50 


3.92 


6.38 


5.77 


7.08 6.37 


1.35 


2.43 


3.57 


3.52 


52.94 


1908 


. 1.98 


5.17 3.76 


5.07 


6.63 


1.01 


3.52 1.02 


.83 


.24 


3.81 


1.05 


34.09 


1909 


. 2.77 


6.42 3.80 


3.44 


3.52 


5.57 


5.03 .81 


3.94 


3.60 


4.13 


3.28 


46.31 


1910 


. . 2.97 


3.57 .27 


3.79 


5.18 


3.07 


4.30 2.10 


6.72 


6.55 


2.32 


1.78 


42.62 


1911... 


. 2.06 


2.41 2.10 


6.81 


1.73 


7.93 


1.28 2.40 


12.23 


3.05 


3.03 


2.62 


47.65 


1912 


. 1.75 


2.08 4.56 


4.50 


5.84 


2.32 


4.64 






1.31 


1.09 




1913 


. 9.01 


1.10 9 . 57 


3.23 


2.37 


1.48 


2.18 1.97 


4.04 


3.72 


4.89 


1.41 


44.97 


1914 


. 2.77 


3.60 2.75 


3.73 


.77 


1.76 


3.63 7.83 


2.48 


3.06 


.89 


2.79 


36.06 


1915 


. . 3.63 


2.91 1.11 


1.21 


6.65 


5.53 


5.76 8.82 


1.58 


.75 


3.54 


4.34 


45.83 


1916... 


.10.05 


1.14 1.66 


1.09 


4.42 


7.04 


1.30 7.92 


3.61 


2.32 


1.15 


2.11 


43.81 


1917 


. 4.92 


.12 2.89 


7.12 


4.84 


4.69 


1.05 3.30 


1.14 


4.63 


1.00 


.79 


36.49 


1918 


. 3.39 


.99 1.95 


7.30 


6.58 


3.84 


2.25 3.62 


4.97 


2.97 


2.15 


4.83 


44.84 


1919 


. 1.21 


1.23 3.27 


2.49 


5.15 


8.51 


1.41 2.19 


2.29 


12.32 


5.01 


1.10 


46.18 


1920 


. 2.02 


1.07 5.09 


2.07 


5.20 


2.01 


4.67 4.61 


3.73 


1.99 


1.10 


3.19 


36.75 



1949] CLIMATE OF ILLINOIS: APPENDIX B 287 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


OLNEY, Richland county, 


concluded 










1921... 


. 2.58 


.93 


6.25 


2.48 


2.23 


3.61 2.38 


4.72 6.38 


2.21 


5.07 


3.71 


42.55 


1922 


. 1.14 


1.82 


7.93 


5.85 


2.63 


1.03 1.56 


2.09 .52 


2.97 


2.32 


5.36 


35.22 


1923 , 


.2.67 


1.81 


4.94 


3.44 


5.77 


3.38 .56 


7.15 2.39 


3.56 


1.88 


5.80 


43.35 


1924 


. 2.75 


1.74 


2.45 


1.89 


5.45 


5.38 3.77 


6.07 3.40 


.41 


1.18 


3.07 


37.56 


1925 


. .82 


2.23 


2.21 


1.99 


3.44 


4.88 1.67 


3.25 3.85 


4.25 


4.91 


2.00 


35.50 


1926... 


. 2.47 


3.69 


3.34 


5.66 


.87 


1.86 2.90 


8.89 10.99 


5.22 


2.62 


1.75 


50.26 


1927 


. 4.34 


1.11 


5.50 


4.77 


8.99 


2.75 4.05 


4.12 3.90 


1.68 


5.75 


3.58 


50.54 


1928 


.1.55 


3.92 


1.60 


2.93 


2.79 


7.24 3.40 


3.35 2.16 


5.59 


3.53 


2.36 


40.42 


1929 


. 5.08 


2.39 


3.20 


5.11 


7.41 


4.07 2.35 


2.24 4.01 


2.13 


2.07 


4.18 


44.24 


1930 


. 8.38 


3.18 


1.01 


1.71 


1.19 


1.95 .38 


2.62 3.83 


1.93 


2.45 


1.39 


30.02 


1931... 


.63 


1.55 


3.15 


3.16 


3.97 


.85 7.71 


5.08 6.35 


2.08 


7.41 


4.63 


46.57 


1932 


. 7.20 


1.37 


2.33 


2.41 


1.15 


3.62 1.93 


4.90 7.11 


4.05 


3.27 


5.58 


44.92 


1933 


. 3.87 


1.83 


6.23 


5.30 


9.17 


.99 5.35 


1.51 2.59 


2.19 


.67 


2.23 


41.90 


1934 


. 1.51 


1.26 


3.27 


2.76 


2.17 


3.19 8.39 


5.73 6.75 


.79 


5.50 


2.63 


43.95 


1935 


. 3.52 


.62 


6.10 


2.41 


8.60 


5.33 .95 


.66 3.30 


1.28 


5.32 


1.34 


39.43 


1936... 


.1.38 


2.18 


1.95 


2.34 


.78 


1 . 55 .79 


1.27 3.08 


3.82 


3.62 


2.80 


25.56 


1937 


.10.90 


2.29 


2.68 


6.77 


3.89 


4.48 3.66 


3.80 1.97 


5.40 


1.81 


4.24 


51.89 


1938 


. 1.44 


2.08 


9.39 


4.44 


6.34 


3.14 8.77 


3.75 1.73 


.22 


3.63 


2.04 


46.97 


1939 


. 4.40 


3.50 


3.55 


6.04 


2.19 


6.38 2.51 


3.39 .59 


1.47 


2.02 


2.38 


38.42 


1940 


. 1.74 


3.13 


1.70 


5.73 


4.45 


1.96 .66 


1.82 .32 


1.67 


5.45 


2.92 


31.55 


1941... 


.1.55 


.86 


.83 


3.86 


3.02 


6.53 3.01 


1.83 2.70 


6.84 


3.68 


2.20 


36.91 


1942 


.1.60 


3.31 


4.51 


2.96 


4.30 


5 . 55 3 . 26 


3.75 .78 


1.62 


4.34 


2.27 


38.25 


1943 


.1.37 


2.36 


2.10 


4.62 


12.79 


4.46 3.82 


.39 3.37 


2.41 


2.64 


2.21 


42.54 


1944 


. .57 


3.78 


3.10 


8.47 


2.85 


1.29 1.01 


6.24 1.76 


.40 


1.41 


1.33 


32.21 


1945 


. 1.91 


4.27 


12.04 


7.72 


4.69 


9.59 3.20 


4.18 7.37 


1.65 


4.78 


2.35 


63.75 


1946 


.2.37 


3.75 


2.11 


2.37 


10.59 


2.01 2.38 


7.09 1.96 


2.73 


5.08 


3.18 


45.62 


Aver 


. 3.13 


2.46 


4.08 


3.83 


4.27 


3.84 3.34 


3.62 3.41 


2.68 


3.35 


2.80 


40 81 


PADUCAH 


, McCracken county, Kentucky 


1882... 


. 2.01 


4.26 


4.90 


4.37 


10.31 


3.26 7.88 


7.59 1.28 


1.89 


4.34 


2.58 


54.67 


1883 


. 4.35 


6.22 


7.26 


6.86 


4.28 


3.54 6.64 


2.50 1.06 


7.38 


3.93 


3.41 


57.43 


1884 


. 2.31 


4.40 


3.70 


4.89 


4.62 


5.11 5.01 


3.24 5.03 


3.21 


.50 


4.55 


46.57 


1885 


.1.62 


.75 


2.52 


1.52 


3.05 


8.68 1.34 


2.52 2.61 


1.65 


2.55 


3.15 


31.96 


1886... 


. 2.29 


2.02 


2.17 


5.02 


1.09 


5.61 1.14 


6.21 1.74 


.28 


4.07 


1.71 


33.35 


1887 


. 1.23 


5.33 


3.12 


1.50 


1.57 


1.92 3.03 


1.30 2.04 


.51 


4.13 


2.01 


27.69 


1888 


. 4.34 


1.70 


5.00 


3.30 


3.43 


4.23 1.23 


4.56 .10 


1.54 


5.44 


.65 


35.52 


1889 


. 3.64 


1.61 


1.92 


1.34 


4.48 


5.19 4.91 


.45 5.69 


.72 


5.46 


.89 


36.30 


1890 


. 6.82 


8.35 


5.23 


4.62 


4.42 


.84 1.33 


7.12 2.61 


3.77 


7.56 


2.81 


55.48 


1891... 


. 4.08 


6.59 


8.10 


1.91 


1.88 


3.63 3.59 


6.07 .49 


.31 


6.42 


5.00 


48.07 


1892 


. .62 


2.56 


2.55 


9.08 


2.69 


1.55 3.15 


3.95 .04 


.62 


2.35 


3.62 


32.78 


1893 


. 3.00 


4.37 


2.08 


5.11 


7.53 


4.80 .81 


2.80 3.54 


5.84 


3.19 


2.16 


45.23 


1894 


. 2.94 


5.56 


3.86 


3.70 


3.95 


1.59 1.48 


2.50 3.05 


1.12 


.96 


3.90 


34.61 


1895 


. 5.28 


1.00 


3.22 


3.99 


1.57 


3.49 6.32 


2.29 2.54 


1.04 


7.01 


3.36 


41.11 


1896 


. 1.65 


2.28 


4.88 


1.77 


8.49 


4.72 3.75 


2.03 2.87 


2.34 


5.35 


1.73 


41.86 


1897 


. 3.21 


4.39 


8.65 


9.23 


2.60 


5.68 4.11 


1.22 T 


.59 


5.74 


3.66 


49.08 


1898 


.9.30 


.83 


9.92 


3.66 


5.68 


4.15 4.00 


2.68 5.35 


6.88 


1.17 


2.05 


55.67 


1899 


. 7.90 


2.83 


5.42 


3.38 


5.72 


1 . 82 5.19 


3.98 1.51 


3.06 


2.00 


5.11 


47.92 


1900 


. 3.01 


5.61 


1.67 


3.22 


4.58 


9.39 5.47 


.21 2.72 


2.06 


6.53 


2.51 


46.98 


1901... 


. 1.56 


2.37 


4.58 


2.77 


1.83 


1.40 1.34 


7.14 4.01 


6.22 


2.06 


6.74 


42.02 


1902 


. 4.16 


1.63 


3.65 


2.62 


2.63 


2.69 1.94 


4.02 6.18 


2.91 


5.90 


9.20 


47.53 


1903 


. 2.88 


6.47 


3.42 


1.86 


3.75 


.47 2.63 


1.42 .44 


1.92 


1.98 


4.20 


31.44 


1904 


. 4.48 


2.38 


7.22 


2.80 


1.66 


3.32 6.38 


.92 3.41 


1.24 


.20 


3.74 


37.75 


1905 


. 3.72 


1.96 


3.46 


3.54 


4.96 


2.03 5.78 


2.34 1.58 


4.44 


5.95 


3.74 


43.50 


1906 


. 5.20 


2.76 


7.02 


1.28 


.68 


3.52 6.02 


3.40 4.70 


1.94 


8.08 


7.71 


52.31 


1907 


.12.22 


3.84 


4.38 


3.68 


7.76 


3.42 3.20 


2.69 2.26 


3.38 


5.10 


3.99 


55.92 


1908 


. 1.78 


8.44 


3.76 


7.14 


3.74 


3.60 3.44 


4.46 .04 


T 


4.58 


1.74 


42.72 


1909 


.2.90 


10.04 


5.80 


5.82 


4.72 


2.66 6.20 


.84 4.36 


1.50 


4.50 


4.56 


53.90 


1910 


. 3.54 


3.24 


.88 


6.90 


3.20 


2.92 11.94 


2.20 1.20 


9.22 


2.02 


4.03 


51.29 


1911 


. 2.81 


3.00 


1.54 


6.71 


1.60 


3.28 2.06 


6.09 3.38 


1.49 


4.48 


4.40 


40.84 


1912 


. 4.88 


2.93 


6.20 


8.92 


3.28 


6.07 4.76 


1.50 1.76 


3.00 


1.24 


2.12 


46.66 


1913 


. 14 . 68 


2.88 


8.81 


3.43 


1.92 


.40 5.78 


6.03 2.65 


3.88 


2.22 


1.61 


54.29 


1914 


. 1.52 


4.55 


3.12 


2.50 


1.45 


.46 T 


6.59 4.04 


3.56 


.82 


4.35 


32.96 


1915 


. 4.49 


2.44 


1.26 


.76 


5.17 


3.20 3.26 


5.79 3.76 


2.90 


6.07 


7.92 


47.02 



288 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


PADUCAH 


, McCracken county, Kentucky, concluded 


1916... 


. 9.83 


1.23 


2.68 


2.57 5.30 6.42 


2.36 


2.55 


1.95 


2.22 


1.96 


4.39 


43.46 


1917 


. . 4.20 


2.76 


5.06 


7.36 3.38 6.09 


3.68 


2.32 


1.20 


1.84 


2.88 


2.25 


43.02 


1918 


. 4.72 


1.05 


2.07 


4.64 4.88 4.29 


.26 


5.47 


4.07 


2.54 


2.00 


5.39 


41.38 


1919 


. 3.16 


1.69 


7.29 


3.52 6.53 6.34 


.84 


4.44 


1.70 


6.76 


8.50 


3.84 


54.61 


1920 


. . 5.84 


2.22 


4.72 


4.76 5.23 2.18 


4.16 


6.12 


3.72 


2.92 


.98 


5.74 


48.59 


1921 


. 3.04 


4.32 


6.46 


4.92' 1.95 4.40 


.34 


4.00 


5.55 


1.11 


9.88 


3.67 


49.64 


1922 


. 2.20 


3.06 


10.62 


6.98 2.80 3.63 


3.08 


.80 


1.18 


3.42 


2.22 


4.60 


44.59 


1923 


. 6.54 


3.76 


5.06 


5.54 7.30 2.60 


1.67 


7.35 


5.34 


2.66 


4.72 


5.31 


57.85 


1924 


. 4.05 


2.12 


1.84 


3.09 6.15 7.55 


5.30 


2.15 


1.44 


.18 


1.86 


4.74 


40.47 


1925 


. 1.21 


2.99 


2.85 


2.47 1.18 5.07 


2.22 


.37 


4.54 


10.81 


5.04 


.92 


39.67 


1926... 


. 3.50 


1.88 


2.44 


4.03 1.01 3.19 


.83 


8.16 


1.88 


3.29 


4.16 


4.92 


39.29 


1927 


. 7.51 


1.69 


9.18 


13.25 11.05 4.37 


3.72 


3.15 


5.83 


4.23 


5.04 


3.33 


72.35 


1928 


. 2.26 


2.70 


2.61 


6.02 2.60 19.22 


.92 


3.61 





5.16 


5.06 


3.01 


53.17 


1929 


. 7.40 


3.85 


3.37 


4.90 9.45 6.91 


5.48 


3.98 


8.00 


1.59 


3.70 


3.23 


61.86 


1930 


.. 8.64 


3.52 


2.29 


.95 1.55 3.10 


.56 


2.96 


5.63 


1.98 


2.23 


1.92 


35.33 


1931 


.96 


3.78 


3.46 


5.21 2.76 4.27 


2.54 


4.85 


1.72 


2.06 


5.99 


3.89 


41.49 


1932 


. 8.00 


5.02 


3.62 


3.35 .63 3.31 


4.39 


6.51 


7.47 


3.66 


3.03 


5.71 


54.70 


1933 


. 3.81 


5.80 


7.35 


4.86 5.49 .37 


6.23 


2.16 


7.54 


4.27 


1.75 


4.13 


53.76 


1934 


. .72 


2.89 


6.13 


2.22 1.14 


2.67 


3.98 


10.99 


2.34 


8.90 






1935 


. 4.91 


2.51 


13.62 


5.64 5.04 8.89 


1.00 


1.39 


1.22 


3.79 


2.14 


2.59 


52.74 


1936 . .. 


. 1.08 


1.66 


4.40 


1.32 .41 


3.75 


.59 


6.02 


4.48 


3.42 


4.04 




1937 


.17.53 


2.11 


1.38 


6.25 3.26 2.80 


3.23 


1.74 


2.03 


5.51 


1.88 


3.09 


50.81 


1938 


. 3.78 


3.47 


7.98 


2.11 3.13 1.64 


8.68 


4.11 


1.56 


1.31 


3.59 


1.75 


43.11 


1939 


. 6.26 


8.62 


5.50 


9.43 1.95 3.02 


1.64 


3.01 


1.12 


1.39 


1.54 


2.76 


46.24 


1940 


. 2.74 


5.58 


4.37 


5.38 2.75 4.71 


1.43 


2.36 


.99 


.68 


5.18 


3.72 


39.89 


1941 


. 2.50 


1.38 


.70 


2.19 2.74 2.84 


2.28 


3.92 


1.09 


6.99 


2.29 


2.73 


31.65 


1942 


. . 5.70 


3.80 


4.33 


4.87 3.11 2.30 


3.92 


5.00 


1.34 


2.97 


4.35 


3.08 


44.77 


1943 


. .47 


1.02 


6.18 


2.49 8.51 2.06 


3.43 


.83 


4.33 


1.25 


1.54 


2.47 


34.58 


1944 


. 1.16 


4.87 


4.64 


5.61 3.34 1.14 


1.21 


2.13 


1.52 


.88 


3.03 


3.58 


33.11 


1945 


. 3.20 


6.52 


10.87 


9.48 5.04 7.58 


1.73 


5.03 


5.34 


3.98 


3.69 


2.39 


64.85 


1946..... 


. 4.86 


5.96 


2.38 


2.57 8.23 .28 


4.12 


4.61 


.99 


2.80 


7.04 


3.39 


47.23 


Aver 


. 4 . 34 


3.59 


4.72 


4.47 3.99 3.90 


3.43 


3.51 


3.01 


2.95 


3.90 


3.62 


45 43 










ST. LOUIS, 


Missouri 3 


1837... 


.70 


1.08 


3.43 


1.40 3.13 2.77 


4.07 


3.10 


2.88 


1.15 


1.60 


1.70 


27.01 


1838 


. 3.72 


1.25 


1.51 


3.36 4.68 3.73 


3.13 


4.48 


.06 


3.06 


2.09 


.44 


31.51 


1839 


. 2.21 


2.50 


2.59 


5.46 7.93 7.26 


5.71 


2.89 


2.45 


3.96 


2.48 


2.00 


47.44 


1840 


.1.80 


1.38 


2.10 


3.31 4.58 6.27 


2.36 


7.15 


3.96 


6.30 


1.73 


.71 


41.65 


1841 


.. .84 


.88 


4.99 


3.85 2.38 1.67 


3.09 


5.63 


3.22 


6.81 


5.44 


3.93 


42.73 


1842 


. .45 


3.90 


2.22 


3.49 3.22 5.12 


1.76 


2.64 


2.17 


2.57 


2.38 


2.39 


32.31 


1843 


. 2.34 


1.90 


3.49 


4.87 4.15 3.95 


2.49 


1.32 


2.19 


1.55 


4.82 


1.72 


34.79 


1844 


. 3.36 


1.73 


4.84 


3.86 11.26 6.85 


8.13 


.45 


.30 


2.25 


1.17 


1.61 


45.81 


1845 


. 1.83 


1.07 


3.18 


2.28 4.42 10.01 


4.75 


6.23 


1.03 


1.16 


1.10 


.93 


37.99 


1846 


. 2.98 


1.27 


1.27 


4.84 3.75 5.21 


.84 


4.73 


4.84 


2.71 


2.11 


10.90 


45.45 


1847 


. 2.12 


3.58 


2.28 


3.98 4.36 8.61 


5.37 


.90 


3.26 


8.74 


8.63 


.89 


52.72 


1848 


. 1.86 


2.27 


6.61 


3.16 8.10 17.07 


5.37 


9.74 


1.12 


2.41 


1.91 


5.74 


65.36 


1849 


. 4.18 


.56 


2.70 


2.64 2.71 6.46 


9.40 


5.15 


5.81 


2.17 


2.11 


1.82 


45.71 


1850 


. 1.94 


4.10 


5.63 


7.68 7.47 1.47 


4.83 


2.10 


3.74 


2.71 


6.24 


2.59 


50.50 


1851 


. .61 


6.74 


3.14 


4.70 2.83 6.19 


5.77 


8.97 


.49 


1.51 


1.99 


3.90 


46.84 


1852 


. .99 


2.12 


7.67 


2.28 5.19 10.25 


3.36 


1.60 


1.47 


5.26 


3.29 


3.48 


46.96 


1853 


. .52 


1.67 


.79 


3.24 3.64 3.23 


4.10 


5.48 


4.67 


.96 


1.51 


1.08 


30.89 


1854 


.1.18 


3.11 


7.49 


7.60 6.30 3.21 


.92 


1.80 


1.44 


4.15 


1.94 


1.49 


40.63 


1855 


. 4.66 


.70 


2.89 


2.65 7.46 4.27 


5.17 


6.53 


3.89 


3.89 


5.16 


3.10 


50.37 


1856 


. 1.03 


3.64 


1.06 


6.35 3.03 1.24 


4.61 


6.82 


3.51 


2.10 


4.90 


4.29 


42.58 


1857 


. .41 


7.74 


1.80 


1.72 4.81 3.71 


2.82 


4.15 


3.18 


3.02 


3.80 


1.87 


39.03 


1858 


. 3.42 


2.12 


3.96 


6.07 10.64 6.69 


8.03 


2.87 


3.86 


7.73 


4.92 


8.52 


68.83 


1859 


. 2.32 


5.35 


7.32 


4.89 6.60 11.02 


5.54 


2.93 


4.44 


1.80 


5.43 


3.76 


61.40 


1860 


. 1.80 


2.60 


1.16 


2.03 2.29 6.58 


2.97 


2.96 


2.11 


1.58 


1.63 


2.08 


29.79 


1861 


.1.16 


2.01 


7.38 


3.18 4.39 4.96 


2.04 


3.44 


4.14 


2.85 


1.39 


1.09 


38.03 


1862 


. 4.01 


.80 


4.11 


4.82 2.51 2.85 


3.61 


1.32 


6.27 


3.73 


3.59 


6.38 


44.00 


1863 


. 4.11 


3.99 


3.02 


1.55 2.68 3.16 


2.51 


6.93 


1.56 


4.76 


2.15 


4.03 


40.45 


1864 


. 2.74 


.82 


1.71 


5.58 3.90 .41 


3.60 


4.91 


2.82 


3.15 


5.25 


2.72 


37.61 


1865 


.87 


3.75 


8.61 


3.31 5.66 5.21 


7.94 


1.96 


2.60 


3.33 





3.63 


46.87 



Authorities: 1837, Medical Department, United States Army (St. Louis Arsenal); 1838 thru 
1869, Dr. George Engelmann; 1870, St. Louis University; since 1871, the United States Weather Bureau. 



1949] CLIMATE OF ILLINOIS: APPENDIX B 289 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ST. LOUIS, 


Missouri, continued 


1866... 


. 4.16 


2.24 


2.80 


1.56 


2.24 


5.59 


3.67 5.16 10.53 


2.01 


1.37 


1.87 


43.20 


1867 


. 2.28 


4.81 


2.37 


.53 


8.26 


5.64 


3.71 2.29 .17 


1.31 


2.74 


3.65 


37.76 


1868 


. 1.71 


.55 


7.66 


7.08 


3.96 


1.58 


2.03 8.53 5.25 


2.11 


2.04 


3.09 


45.59 


1869 


. 2.02 


2.49 


4.24 


4.61 


3.60 


6.25 


2.49 5.51 1.70 


3.42 


7.48 


3.16 


46.97 


1870 


. 2.25 


.28 


2.76 


2.39 


2.05 


1.46 


1.81 6.05 1.07 


3.40 


1.87 


1.69 


27.08 


1871... 


. 2.53 


2.92 


1.27 


.49 


3.15 


2.51 


1.64 3.55 .25 


2.07 


1.83 


1.17 


23.38 


1872 


. .64 


1.15 


2.43 


2.77 


6.04 


4.28 


4.59 .93 3.38 


.55 


2.01 


1.70 


30.47 


1873 


. 3.53 


1.52 


2.10 


6.88 


5.73 


6.68 


5.96 .07 3.02 


3.27 


1.64 


5.10 


45.50 


1874 


. 3.14 


3.66 


4.36 


3.44 


3.70 


2.00 


5.71 4.70 2.30 


1.09 


2.32 


1.46 


37.88 


1875 


. .54 


2.59 


4.08 


2.53 


5.48 


10.84 


9.50 2.66 .24 


1.23 


.89 


2.42 


43.00 


1876 


. 4.75 


2.86 


6.90 


2.25 


3.13 


6.43 


5.90 5.03 7.63 


1.66 


1.74 


.18 


48.46 


1877 


. 1.24 


.88 


3.41 


3.03 


3.11 


8.69 


2.88 2.61 3.56 


4.92 


3.76 


3.34 


41.43 


1878 


. 2.36 


1.69 


2.79 


6.74 


4.63 


2.40 


3.92 4.75 3.42 


3.27 


1.38 


3.48 


40.83 


1879 


. 1.64 


1.48 


1.92 


2.31 


.95 


4.04 


1.97 2.23 1.34 


.68 


4.30 


2.84 


25.70 


1880 


. 3.83 


2.65 


2.51 


3.31 


3.44 


2.56 


5.17 1.53 3.10 


2.09 


2.67 


1.80 


34.66 


1881 


.49 


4.16 


1.95 


3.14 


3.96 


2.74 


2.13 .31 3.14 


7.21 


6.74 


1.40 


37.37 


1882 


. 2.80 


8.94 


3.49 


3.58 


4.55 


4.53 


3.84 2.20 1.73 


2.44 


3.24 


1.81 


43.15 


1883 


. .94 


5.88 


2.29 


3.31 


2.89 


5.04 


4.31 3.34 .01 


6.60 


3.71 


1.78 


40.10 


1884 


. .79 


4.43 


3.00 


4.15 


2.68 


4.52 


2.86 1.21 6.04 


2.48 


2.30 


6.18 


40.64 


1885 


. 3.26 


.87 


.40 


4.84 


2.80 


7.68 


2.58 2.96 8.98 


7.51 


1.68 


2.03 


45.59 


1886 


. 3.11 


1.71 


3.04 


2.10 


7.84 


7.09 


.55 2.44 9.60 


.85 


3.36 


2.65 


44.34 


1887 


. .65 


3.68 


3.54 


4.36 


5.27 


2.54 


2.74 1.14 2.47 


.76 


4.61 


3.54 


35.30 


1888 


. 2.15 


2.39 


3.79 


1.88 


3.81 


8.09 


2.09 6.66 1.31 


2.59 


4.40 


2.01 


41.17 


1889 


. 3.04 


4.78 


1.62 


1.68 


3.80 


4.72 


2.02 .85 3.54 


1.65 


4.43 


1.03 


33.16 


1890 


. 7.47 


2.86 


5.99 


4.05 


5.81 


3.18 


.37 2.43 1.80 


.86 


1.55 


1.32 


37.69 


1891 


. 1.35 


2.95 


2.29 


2.29 


2.73 


5.97 


1.50 2.75 1.43 


.65 


5.30 


1.32 


30.53 


1892 


. 1.52 


4.89 


1.92 


7.60 


7.87 


2.73 


4.64 1.75 1.59 


1.66 


3.46 


1.99 


41.62 


1893 


. .33 


2.98 


5.10 


10.84 


5.42 


3.49 


2.49 .65 3.69 


1.66 


1.36 


1.32 


39.33 


1894 


. 2.56 


2.88 


2.69 


2.68 


3.61 


1.12 


1.35 1.66 3.11 


1.56 


1.49 


2.73 


27.44 


1895 


.1.65 


.43 


2.82 


.46 


3.16 


2.46 


7.26 2.08 2.01 


.23 


3.98 


4.66 


31.20 


1896 


. 1.43 


2.81 


2.03 


2.43 


9.12 


4.57 


4.67 2.12 2.42 


1.20 


3.70 


1.05 


37.55 


1897 


. 3.75 


2.67 


8.25 


4.66 


1.59 


5.32 


3.23 .66 .09 


.31 


6.21 


3.43 


40.17 


1898 


. 4.53 


1.71 


7.73 


3.85 


8.55 


3.85 


7.44 .87 3.23 


4.34 


2.07 


1.03 


49.20 


1899 


. 1.66 


3.40 


3.96 


1.98 


6.32 


2.32 


4.54 2.77 1.27 


2.89 


1.95 


1.55 


34.61 


1900 


. .65 


5.09 


1.45 


1.83 


4.47 


2.62 


3.85 1.30 2.68 


2.07 


3.10 


.40 


29.51 


1901 


.1.12 


1.86 


2.94 


2.35 


2.69 


3.92 


1.47 .76 .64 


2.12 


1.21 


3.72 


24.80 


1902 


.1.18 


.83 


4.50 


2.49 


3.04 


7.86 


2.34 5.20 1.98 


2.00 


3.20 


3.81 


38.43 


1903 


. 1.76 


3.14 


3.20 


2.79 


2.08 


5.71 


2.68 6.16 3.06 


1.37 


.61 


1.25 


33.81 


1904 


. 3.15 


.84 


7.87 


3.25 


2.88 


4.64 


3.09 2.62 2.97 


.50 


.54 


1.36 


33.71 


1905 


. 2.47 


1.12 


2.35 


2.32 


4.67 


2.72 


4.42 2.58 5.56 


6.64 


1.63 


2.06 


38.54 


1906 


. 3.57 


2.92 


4.53 


1.98 


2.61 


2.80 


.98 3.72 4.40 


1.25 


4.67 


2.09 


35.52 


1907 


. 7.35 


1.12 


2.39 


3.65 


5.57 


4.96 


3.32 4.36 1.57 


3.15 


1.89 


2.06 


41.39 


1908 


. 2.08 


3.39 


3.43 


3.84 


7.72 


3.02 


4.24 1.55 1.24 


.21 


2.83 


.64 


34.19 


1909 


. 3.20 


3.94 


3.69 


6.18 


5.99 


2.63 


7.34 .66 4.22 


3.40 


4.36 


1.89 


47.50 


1910 


. 2.73 


3.22 


.14 


4.09 


5.23 


4.24 


4.21 1.90 6.09 


3.98 


.30 


1.18 


37.31 


1911... 


.85 


3.02 


2.22 


7.46 


2.26 


1.34 


.64 3.51 7.09 


2.63 


3.44 


1.67 


36.13 


1912 


. 1.31 


2.80 


5.85 


7.84 


4.29 


6.93 


5.29 2.65 2.84 


2.61 


1.76 


.42 


44.59 


1913 


. 4.34 


1.20 


7.97 


3.57 


1.53 


1.55 


3.61 1.59 4.50 


4.08 


3.12 


1.62 


38.68 


1914 


. 2.21 


4.63 


1.25 


1.92 


.69 


.10 


1.52 5.42 6.68 


7.45 


1.53 


2.23 


35.63 


1915 


. 2.83 


2.30 


.44 


1.20 


7.67 


9.77 


6.02 11.43 1.41 


.90 


1.97 


3.34 


49.28 


1916 


. 8.53 


1.78 


1.83 


1.78 


3.00 


3.97 


1.20 10.69 2.69 


1.64 


2.53 


2.16 


41.80 


1917 


.1.72 


.35 


1.80 


4.64 


3.78 


.62 


3.17 1.99 3.50 


1.87 


.78 


.78 


25.00 


1918 


. 1.31 


2.09 


.67 


7.09 


3.28 


1.47 


.60 5.26 5.09 


3.63 


2.73 


2.69 


35.91 


1919 


. .13 


1.54 


1.72 


1.76 


7.86 


5.30 


1.50 3.03 6.13 


8.52 


2.08 


1.22 


40.79 


1920 


. 1.85 


.74 


3.97 


3.43 


5.00 


1.53 


.73 4.16 4.79 


2.36 


.56 


2.41 


31.53 


1921... 


.1.10 


1.08 


6.14 


7.01 


4.29 


2.31 


2.05 2.75 5.60 


1.45 


4.43 


2.89 


41.10 


1922 


. .74 


1.52 


4.84 


7.40 


1.26 


.80 


2.42 1.79 2.49 


1.74 


2.36 


4.98 


32.34 


1923 


. 2.08 


1.50 


4.26 


3.20 


5.85 


4.33 


1.83 6.19 3.51 


3.74 


1.90 


3.30 


41.69 


1924 


.1.15 


1.29 


3.24 


1.90 


6.18 


6.80 


3.62 3.90 1.97 


.30 


1.53 


4.63 


36.51 


1925 


. .53 


2.19 


1.50 


2.70 


1.48 


4.84 


1.78 2.75 4.59 


4.32 


4.09 


1.46 


32.23 



290 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


ST. LOUIS, 


Missouri, concluded 


1926 


. 1.69 


2.52 


3.95 


4.42 


1.58 


1.72 .54 1.83 


7.40 


3.84 


2.71 


1.15 


33.35 


1927 


. 3.66 


.56 


7.67 


6.30 


9.21 


2.59 2.79 2.60 


2.93 


4.65 


5.56 


2.31 


50.83 


1928 


. 1.91 


2.43 


2.27 


3.02 


2.18 


7.25 6.66 4.83 


1.70 


2.24 


1.90 


2.22 


38.61 


1929 


. 2.11 


.88 


5.33 


6.99 


10.09 


3.65 2.67 3.40 


1.71 


4.99 


1.41 


3.07 


46.30 


1930 


. 5.70 


2.35 


.99 


1.32 


1.69 


2.63 .25 .28 


3.51 


1.84 


1.77 


.90 


23.23 


1931 


.40 


1.77 


2.39 


3.23 


'3.61 


1.98 4.06 3.46 


5.66 


2.90 


4.65 


3.28 


37.39 


1932 


. 2.50 


1.59 


1.33 


3.19 


2.09 


2.45 5.30 8.68 


2.15 


4.28 


2.08 


2.37 


38.01 


1933 


. 2.18 


.96 


4.91 


3.84 


8.59 


.15 4.63 .60 


2.60 


2.97 


1.64 


1.70 


34.77 


1934 


. 1.72 


1.26 


2.96 


2.40 


.54 


3.25 1.22 3.14 


5.86 


2.23 


2.66 


1.95 


29.19 


1935 


. 2.76 


1.27 


6.43 


2.50 


7.35 


4.37 3.13 1.82 


3.35 


2.56 


2.71 


1.11 


39.36 


1936 


. 1.32 


1.97 


1.67 


2.80 


.85 


3.07 .60 .85 


5.94 


2.79 


2.20 


2.08 


26.14 


1937 


. 5.21 


1.52 


1.75 


6.03 


2.65 


5.84 .67 1.57 


2.02 


3.51 


1.19 


3.91 


35.87 


1938 


.1.31 


3.51 


9.52 


3.34 


5.97 


4.50 3.64 1.15 


1.01 


1.17 


4.04 


2.06 


41.22 


1939 


. 4.08 


3.22 


3.35 


5.85 


2.64 


3.24 2.07 10.06 


1.01 


.77 


2.43 


1.43 


40.15 


1940'. 


. 1.33 


1.39 


1.50 


3.86 


1.46 


2.66 .78 4.11 


.03 


1.44 


3.23 


3.21 


25.00 


1941 


. 2.38 


.64 


.60 


4.47 


1.91 


2.52 1.68 2.63 


3.58 


7.46 


3.05 


1.20 


32.12 


1942 


. 1.44 


2.54 


1.92 


2.19 


4.99 


7.24 7.92 3.60 


1.99 


2.30 


4.40 


4.61 


45.14 


1943 


. .74 


1.13 


3.19 


1.87 


10.20 


5.87 1.31 1.85 


2.40 


2.22 


.97 


1.85 


33.60 


1944 


. .30 


2.72 


2.49 


8.82 


4.15 


1.34 3.45 2.46 


4.37 


.78 


1.11 


1.52 


33.51 


1945 


. 1.02 


3.57 


8.27 


5.40 


4.31 


7.42 1.00 4.38 


10.01 


1.08 


1.68 


1.68 


49.82 


1946 


.1.59 


3.11 


3.08 


2.85 


5.58 


3.46 1.45 20.45 


1.52 


3.45 


7.63 


2.95 


57.12 


Aver 


2.23 


2.43 


3.51 


3.78 


4.48 


4.42 3.41 3.59 


3.24 


2.83 


2.84 


2.47 


39.23 


SALEM 


, Marion county 












1915 












6.00 9.68 


1.33 


.48 


1.83 


4.01 




1916... 


. 8.17 


1.34 


1.07 


1.06 


3.16 


4.15 3.00 7.54 


2.21 


2.68 


2.25 


4.11 


40.74 


1917 


. 3.47 


.26 


2.16 


7.22 


4.74 


4.47 1.43 2.93 


.49 


4.29 


1.64 


.84 


33.94 


1918 


.2.65 


1.62 




8.74 


4.89 


3.46 1.11 5.13 


7.10 


2.29 


1.81 


4.88 




1919 


. .71 


1.86 


3.39 


2.40 


6.61 


5.44 1.69 2.56 


1.66 


14.08 


4.04 


1.33 


45.77 


1920 


. 2.71 


2.12 


4.95 


3.95 


6.43 


1.39 3.96 10.23 


4.16 


2.71 


.52 


3.70 


46.83 


1921... 


. 1.77 


.99 


6.63 


3.62 


2.38 


3.83 1.97 4.62 


5.33 


1.59 


4.46 


3.61 


40.80 


1922 


. 1.11 


1.63 


7.94 


6.71 


1.63 


1.96 1.95 1.99 


.48 


6.09 


1.89 


5.08 


38.46 


1923 


. 2.48 


2.13 


5.97 


5.51 


5.58 


2.95 2.85 8.28 


2.15 


3.46 


1.85 


3.72 


46.93 


1924 


. 1.87 


1.26 


3.44 


1.96 


5.57 


7.03 3.85 2.07 


2.61 


.62 


.97 


4.67 


35.92 


1925 


. .89 


2.26 


2.08 


2.14 


2.22 


6.11 2.57 1.84 


4.83 


3.81 


4.38 


1.70 


34.83 


1926... 


. 1.81 


3.12 


3.23 


6.85 


1.55 


1.39 3.65 5.03 


9.25 


4.41 


3.13 


1.99 


45.41 


1927 


. 3.23 


1.27 


5.40 


6.70 


7.22 


1.80 8.31 4.36 


3.76 


3.92 


5.31 


3.96 


55.24 


1928 


.1.69 


3.66 


2.72 


3.06 


2.47 


8.11 3.84 6.47 


1.41 


4.35 


2.82 


2.49 


43.09 


1929 


. 4.36 


1.79 


3.14 


5.53 


9.55 


5.71 2.65 2.46 


.84 


3.56 


2.21 


5.07 


46.87 


1930 


. 8.33 


2.53 


1.70 


1.57 


2.48 


2.64 .23 1.93 


4.76 


2.23 


2.02 


1.13 


31.55 


1931 


.29 


1.57 


2.46 


2.85 


4.78 


1.45 5.72 5.52 


5.05 


3.56 


4.82 


4.81 


42.88 


1932 


. 4.99 


.65 


1.98 


2.08 


2.28 


3.88 3.72 4.03 


2.89 


3.83 


2.57 


3.93 


36.83 


1933 


. 3.36 


1.61 


4.60 


4.47 


7.83 


.22 2.52 1.29 


3.95 


3.77 


.92 


1.55 


36.09 


1934 


. 2.02 


1.30 


3.52 


2.67 


2.66 


3.83 3.89 3.56 


5.32 


2.83 


6.12 


2.49 


40.21 


1935 


. 3.15 


.82 


6.91 


3.09 


10.46 


3.87 3.87 1.16 


2.73 


3.61 


5.31 


1.24 


46.22 


1936... 


.1.43 


2.01 


1.99 


2.08 


1.04 


3.92 .62 1.58 


3.23 


3.44 


3.34 


3.13 


27.81 


1937 


. 8.06 


1.88 


2.04 


5.64 


3.15 


5.14 3.94 3.14 


2.65 


3.92 


1.66 


3.78 


45.00 


1938 


. 1.50 


2.45 


8.19 


2.17 


6.04 


2.34 5.25 2.45 


2.84 


1.31 


2.74 


2.12 


39.40 


1939 


. 4.46 


3.96 


2.39 


7.67 


2.08 


6.91 3.42 6.87 


1.80 


.88 


1.78 


1.69 


43.91 


1940 


. 1.83 


2.06 


2.41 


5.00 


2.01 


2.82 1.02 1.70 


.66 


3.10 


3.60 


2.80 


29.01 


1941... 


. 2.12 


1.08 


.80 


5.14 


1.53 


5.05 2.16 2.54 


1.97 


6.42 


3.74 


1.57 


34.12 


1942 


. 1.57 


3.65 


3.99 


2.60 


3.28 


10.43 10.63 2.41 


2.02 


3.35 


4.97 


2.52 


51.42 


1943 


. 1.38 


.76 


1.78 


3.92 


12.22 


3.65 .23 .78 


2.18 


2.45 


2.90 


1.94 


34.19 


1944 


. .18 


3.56 


2.96 


6.69 


3.48 


1.43 2.81 5.13 


1.98 


.15 


1.61 


1.47 


31.45 


1945 


. 1.33 


3.94 


10.91 


6.57 


5.20 


10.14 .84 2.57 


7.17 


1.94 


3.37 


2.21 


56.19 


1946 


. 1.79 


3.92 


1.39 


3.13 


6.15 


2.98 2.99 8.70 


1.93 


3.00 


5.20 


2.82 


44.00 


Aver 


. 2.73 


2.03 


3.74 


4.28 


4.54 


4.15 3.21 4.08 


3.15 


3.38 


2.99 


2.89 


41.17 



1949] 



CLIMATE OF ILLINOIS: APPENDIX B 



291 



Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July 


Aug. Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SHAWNEETOWN 


, Gallatin county 


1892... 


. 1.11 


1.67 


2.45 


5.10 


3.80 1.82 


2.30 


2.96 2.30 


2.02 


4.22 


1.36 


31.11 


1893 


. 1.63 


4.60 


2.08 


10.55 


3.77 3.12 


2.17 


.34 










1911... 




















3 37 




1912 


.3.69 


2.60 


6.16 


6.94 


2.67 3.97 


3.67 


6.91 3.60 


2.16 


1.23 


1.70 


45.30 


1913 


.11.35 


1.80 


9.44 


3.90 


1.02 1.93 


1.96 


.45 3.07 


2.87 


4.42 


1.85 


44.06 


1914 


.1.53 


4.98 


3.04 


2.85 


1.58 3.49 


1.56 


5 . 87 4 . 55 


2.79 


.50 


4.64 


37.38 


1915 


. 4.95 


2.00 


1.40 


.53 


8.69 6.34 


3.88 


7.39 4.11 


2.14 


3.38 


8.99 


53.80 


1916 


.11.23 


1.61 


2.31 


3.10 


2.86 5.92 


2.74 


6.29 2.07 


2.32 


1.81 


4.56 


46.82 


1917 


. 5.52 


2.18 


4.33 


6.55 


5.17 3.94 


2.73 


2.54 1.03 


2.67 


2.48 


1.84 


40.98 


1918 


. 4.62 


.85 


1.60 


6.30 


5.65 2.39 


2.42 


3.16 4.27 


2.32 


1.76 


5.96 


41.30 


1919 


. 1.57 


1.68 


7.01 


2.47 


7.09 3.17 


1.00 


2.48 1.16 


7.27 


7.70 


2.54 


45.14 


1920 


. 4.55 


1.47 


6.90 


3.25 


9.00 .74 


4.22 


5.15 2.05 


2.20 


1.34 


5.33 


46.20 


1921... 


.3.17 


4.42 


5.06 


4.70 


1.84 2.36 


1.90 


6.10 4.26 


2.35 


10.50 


4.64 


51.30 


1922 


. 1.01 


2.93 


9.80 


4.38 


4.56 2.48 


4.22 


1.79 3.69 


4.52 


1.93 


4.96 


46.27 


1923 


. 4.88 


5.42 


3.82 


4.92 


5.45 5.15 


3.02 


7.00 1.89 


2.48 


3.71 


7.23 


54.97 


1924 


. 3.75 


1.97 


2.15 


3.30 


5.13 4.89 


2.63 


.73 7.03 


.25 


1.30 


3.90 


37.03 


1925 


. 1.61 


2.74 


3.05 


2.45 


1.07 6.97 


3.48 


.52 6.34 


7.50 


5.50 


.86 


42.09 


1926... 


. 3.22 


1.60 


2.40 


4.64 


.80 1.10 


1.33 


8.88 2.01 


4.98 


3.35 


3.59 


37.90 


1927 


. 7.18 


1.36 


7.42 


9.05 


6.23 3.50 


3.04 


1.15 4 . 50 


2.76 


4.57 


4.42 


55.18 


1928 


. 1.49 


2.44 


2.06 


5.36 


3.09 11.69 


1.27 


2.34 .18 


6.57 


3.88 


2.88 


43.25 


1929 


. 5.44 


3.60 


2.58 


3.93 


9.69 3.68 


2.06 


4.88 7.26 


1.74 


2.83 


3.20 


50.89 


1930 


. 8.41 


2.84 


2.30 


1.05 


1.08 5.44 


1.94 


1.17 4.43 


.79 


1.22 


1.47 


32.14 


1931... 


.42 


2.10 


3.86 


3.54 


2.11 3.01 


1.50 


4.17 2.75 


1.53 


6.32 


3.25 


34.56 


1932 


. 7.95 


2.61 


5.60 


2.92 


.54 1.23 


2.90 


6.17 11.37 


3.67 


3.05 


7.53 


55.54 


1933 


. 3.78 


3.59 


7.15 


4.97 


8.02 T 


4.35 


2.06 3.88 


3.67 


.90 


2.23 


44.60 


1934 


.1.15 


1.72 


2.83 


2.32 


1 . 74 1 . 77 


4.84 


3.49 5.55 


1.55 


7.00 


2.65 


36.61 


1935 


. 3.05 


2.10 


10.17 


3.84 


8.31 9.73 


2.78 


1.93 1.49 


3.40 


2.84 


1.22 


50.86 


1936... 


.1.15 


1.80 


5.31 


3.97 


1 . 72 1 . 67 


.75 


1.09 3.25 


4.53 


5.03 


2.59 


32.86 


1937 




1.80 


.85 


4.82 


3.66 3.90 


6.97 


3.91 1.66 


5.04 


1.37 


2.93 




1938 


. 4.14 


2.32 


4.91 


2.73 


4.89 2.86 


6.25 


3.79 1.83 


1.02 


2.65 


1.65 


39.04 


1939 


.5.88 


6.85 


5.47 


7.02 


.97 4.03 


4.84 


3.37 .15 


1.76 


1.64 


1.82 


43.80 


1940 


. 2.41 


4.18 


1.90 


7.81 


4.02 4.17 


.84 


2.22 1.25 


.62 


5.71 


1.90 


37.03 


1941... 


. 2.23 


.72 


.96 


2.91 


2.22 2.17 


5.72 


4.81 .43 


6.65 


2.69 


4.19 


35.70 


1942 


. 3.10 


5.86 


5.40 


4.96 


4.26 3.38 


1.68 


6.28 .52 


1.30 


6.59 


3.05 


46.38 


1943 


. .18 


.78 


11.25 


3.74 


6.18 5.63 


1.63 


.40 3.46 


1.21 


1.22 


2.27 


37.95 


1944 


. .94 


3.55 


4.69 


7.07 


3.12 2.00 


.34 


3.34 .78 


.28 


2.07 


3.10 


31.28 


1945 


. 2.50 


6.85 


12.26 


7.81 


3.16 8.10 


1.71 


6.22 10.32 


1.95 


4.42 


1.63 


66.93 


1946 


.2.90 


4.97 


1.87 


2.96 


6.79 .99 


3.30 


7.52 1.39 


1.57 


5.10 


3.18 


42.54 


Aver 


3.71 


2.88 


4.64 


4.56 


4.11 3.75 


2.81 


3.75 3.33 


2.85 


3.51 


3.36 


43.26 


SPARTA, Randolph county" 


1887.. . 


1.65 




4 62 


2 66 


4 49 2 27 


1 93 


88 2 97 


2 28 


7 09 


3 41 




1888 


.2.17 


3.27 


5.18 


1.82 


2.79 7.23 


1.30 


10.22 2.26 


3.55 


4.48 


2.49 


46.76 


1889 . . 


3 55 


2 35 


1 68 




3 68 8 11 


3 41 


3 59 2 27 


1 51 


5 15 


1 66 




1890 


. 8.12 


3.93 


7.33 


6.54 


2 . 92 1 . 38 


1.73 


7.06 4.34 


.62 


2.38 


1.59 


47.94 


1891... 


. 1.88 


5.22 


2.00 


2.74 


2.87 4.27 


.65 


3 . 43 .66 


1.93 


6.23 


1.83 


33.71 


1892 


.1.67 


4.09 


1.52 


11.03 


5.91 3.22 


2.95 


2.22 2.59 


2.44 


5.95 


2.19 


45.78 


1893 


. .28 


1.77 


2.74 


9.23 


4.09 4.14 


2.64 


2.39 3.07 


6.55 


1.68 


1.23 


39.81 


1894 


. 2.30 


2.60 


2.81 


3.93 


3.57 1.17 


3.15 


1.32 3.91 


1.22 


.77 


2.84 


29.59 


1895 


.1.50 


.45 


2.53 


1.03 


3.08 3.84 


3.75 


2.56 2.65 


.41 


4.30 


5.45 


31.55 


1896... 


. 1.33 


2.36 


3.69 


3.64 


8.56 2.84 


6.06 


1.47 3.15 


1.56 


3.43 


.22 


38.31 


1897 


. 3.16 


2.37 


10.51 


3.55 


1.57 4.88 


.93 


.49 .27 


1.13 


4.54 


4.13 


37.53 


1898 


. 3.83 


1.94 


9.95 


3.40 


5.93 5.09 


6.91 


4.85 4.81 


6.36 


1.88 


1.97 


56.92 


1899 


. 2.16 


2.91 


2.27 


1.30 


3.04 2.72 


5.79 


1.64 .93 


2.75 


1.33 


1.89 


28.73 


1900 


. .63 


3.05 


1.25 


2.37 


2.79 6.66 


3.48 


1.50 3.22 


2.20 


3.38 


1.19 


31.72 


1901... 


.99 


1.96 


3.03 


2.11 


2.32 1.37 


1.33 


1.05 2.37 


2.28 


2.40 


3.59 


24.80 


1902 


. .96 


.76 


4.47 


2.04 


4.70 2.82 


2.71 


4.15 3.79 


1.42 


4.09 


4.33 


36.24 


1903 


. .95 


2.89 


3.06 


3.13 


2.69 2.51 


1.35 


3.58 1.63 


4.32 


2.05 


1.69 


29.85 


1904 


. 2.39 


1.83 


8.66 


4.62 


3.14 5.18 


2.23 


5.33 6.47 


.57 


.86 


1.66 


42.94 


1905 


2.61 


1.52 


3.79 


4.63 


3.09 .26 11.34 


3.20 5.19 


3.91 


2.02 


2.92 


44.48 



8 Data from 1887 thru February, 1898, are for Jordans Grove, and those from March, 1898, 
thru April, 1910, are for Tilden, both about 6 miles north of Sparta. 



292 BULLETIN NO. 532 [April, 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. 


Mar. 


Apr. 


May June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


SPARTA, 


Randolph 


county, concluded 


1906 


. . 4.51 


2.64 


4.36 


1.77 


2.80 2.98 


1.72 4.42 


7.42 


1.52 


5.70 


3.23 


43.07 


1907 


.. 6.13 


1.16 


2.66 


3.73 


5.40 4.41 


2.60 5.11 


3.99 


3.01 


3.17 


4.05 


45.42 


1908 


. . 2.03 


5.61 


3.94 


7.02 


7.08 2.30 


5.26 2.74 


1.32 


.10 


4.34 


.72 


42.46 


1909 


. . 2.95 


4.27 


3.96 


7.53 


3.97 3.76 


6.14 .07 


5.47 


1.97 


5.56 


2.86 


48.51 


1910 


. . 2.45 


3.27 


.03 


3.23 


5.46 2.90 


5.16 4.06 


4.47 


4.62 


1.19 


1.58 


38.42 


1911 


.1.17 


2.52 


2.08 


7.98 


.1.46 .91 


1.67 3.92 


6.74 


3.71 


2.71 


2.72 


37.59 


1912 


. . 1.96 


2.25 


5.18 


5.88 


4.38 3.95 


3.41 4.50 


3.22 


3.01 


1.01 


.61 


39.36 


1913 ... 


. .10.69 


1.38 




3.05 


2.60 2.76 


3.32 1.87 


4.21 


8.52 


2.86 


1.59 




1914 


. . 3.02 


3.61 


2.43 


2.58 


.50 .95 


1.03 6.39 


3.08 


6.27 


1.07 


3.72 


34.65 


1915 


. . 3.64 


2.48 


.53 


.53 


8.43 10.81 


4.22 9.68 


1.09 


.74 


2.78 


3.94 


48.87 


1916 


..11.89 


1.76 


1.47 


1.73 


3.29 7.03 


.66 7.79 


2.30 


3.13 


2.18 


3.73 


46.96 


1917 


. . 3.72 


.38 


2.14 


7.76 


4.63 1.98 


3.40 3.69 


1.42 


3.35 


1.62 


1.47 


35.56 


1918 


. . 2.98 


1.61 


1.31 


10.05 


8.06 2.36 


.11 7.48 


5.03 


3.00 


2.71 


4.70 


49.40 


1919 


. . .95 


1.99 


2.67 


2.55 


5.27 5.31 


2.19 1.70 


1.91 


15.07 


3.39 


.42 


43.42 


1920 


.. 2.91 


.81 


5.34 


3.10 


8.75 .25 


3.75 5.22 


1.95 


1.77 


.46 


3.82 


38.13 


1921 


. 1.66 


1.32 


6.10 


5.97 


3.37 4.37 


3.16 4.18 


6.45 


1.41 


4.67 


3.39 


46.05 


1922 


. . 1.53 


1.40 


5.95 


5.97 


2.54 2.49 


2.56 1.42 


1.35 


3.97 


1.85 


6.51 


37.54 


1923 


. . 2.76 


2.19 


4.95 


4.13 


5.37 2.51 


2.39 13.22 


1.99 


3.98 


2.23 


3.78 


49.50 


1924 


. . 1.45 


1.49 


3.13 


3.11 


6.10 5.61 


5.80 2.89 


3.71 


.55 


.95 


3.75 


38.54 


1925 


.. 1.17 


2.73 


1.91 


3.57 


1.45 5.38 


3.49 3.92 


4.89 


4.83 


3.72 


1.42 


38.48 


1926 


. 1.74 


3.82 


1.97 


2.56 


1.75* .81 


3.01 7.80 


8.24 


5.71 


4.02 


1.80 


43.23 


1927 


. . 3.52 


.97 


7.43 


8.29 


6.34 3.31 


5.32 2.05 


2.37 


2.01 


6.32 


2.95 


50.88 


1928 


. . 1.42 


1.84 


2.00 


3.95 


2.86 8.20 


3.21 2.68 


.24 


3.15 


2.72 


2.34 


34.61 


1929 


. . 3.76 


1.89 


2.65 


4.88 


8.96 4.79 


3.88 3.64 


2.16 


3.17 


1.62 


3.53 


44.93 


1930 


. . 6.25 


1.91 


1.60 


.88 


2.06 1.49 


.74 .13 


4.88 


3.11 


1.58 


.99 


25.62 


1931 


.44 


1.58 


2.49 


2.60 


3.05 1.73 


1.66 4.34 


4.00 


2.72 


4.70 


3.71 


33.02 


1932 


. . 4.38 


.63 


2.16 


2.10 


1.54 2.64 


2.87 6.10 


2.51 


4.69 


1.12 


3.78 


34.52 


1933 


.. 2.18 


1.19 


2.66 


5.62 


8.24 .40 


2.01 2.97 


1.66 


3.14 


.86 


1.71 


32.64 


1934 


. . 1.44 


1.27 


3.07 


4.06 


1.98 2.74 


1.28 3.74 


4.98 


1.62 


6.10 


1.80 


34.08 


1935 


. . 2.93 


.74 


6.99 


2.92 


6.63 6.46 


3.31 1.10 


3.30 


2.61 


5.72 


1.22 


43.93 


1936 


.81 


1.25 


1.03 


3.25 


1.34 1.61 


1.13 .39 


4.28 


4.06 


3.48 


2.50 


25.13 


1937 


. . 8.42 


1.41 


1.73 


6.05 


2.86 4.82 


3.63 1.48 


.71 


5.36 


1.67 


3.34 


41.48 


1938 


. . 2.19 


2.94 


7.80 


3.39 


5.79 6.39 


2.25 3.27 


3.40 


1.25 


1.77 


2.24 


42.68 


1939 


. . 3.68 


3.52 


2.82 


7.90 


3.09 5.76 


6.10 4.61 


2.26 


.69 


1.78 


1.60 


43.81 


1940 


.. 1.80 


2.49 


.90 


5.11 


2.83 1.83 


2.89 3.11 


.92 


2.21 


4.13 


3.34 


31.56 


1941 


. . 2.32 


.53 


.47 


4.63 


2.54 3.39 


1.56 1.97 


3.68 


8.41 


2.97 


2.30 


34.77 


1942 


. . 2.46 


3.66 


2.90 


2.12 


4.41 6.18 


4.64 4.17 


1.78 


3.58 


4.04 


3.01 


42.95 


1943 


. . .32 


.71 


1.77 


3.02 


9.61 6.66 


1.89 1.78 


4.96 


3.02 


1.42 


1.75 


36.91 


1944 


. . .25 


2.39 


2.99 


4.31 


3.57 2.60 


1.59 2.60 


2.27 


.22 


1.24 


1.96 


25.99 


1945 


. . 1.26 


4.65 


12.87 


6.75 


5.10 6.70 


1.48 2.12 


6.57 


3.56 


3.81 


1.01 


55.88 


1946 


. . 1.96 


4.73 


1.53 


3.37 


7.73 1.73 


1.78 10.04 


1.31 


3.61 


6.06 


2.29 


46.14 


Aver 


. . 2.75 


2.28 


3.58 


4.22 


4.24 3.72 


3.03 3.75 


3.25 


3.16 


3.09 


2.56 


39 63 


VINCENNES, Knox county, Indiana 


1887 




5.25 


5.58 


3.83 


2 85 1 12 








4 64 


3 16 




1888. ... 


. . 3.07 


1.88 


5.44 


1.82 


2 . 83 2 . 82 








6.79 


2.61 




1889 


. . 3.80 


1.74 


1.19 


2.24 


4.75 6.76 


6.00 .88 


7.34 


2.71 


7.72 


2.89 


48.02 


1890 


.. 9.44 


7.19 


6.89 


4.11 


3.47 2.55 


1.47 6.34 


3.84 


2.14 


4.15 


2.06 


53.65 


1891... 


. . 2.38 


6.74 


4.87 


2.23 


1.16 6.26 


1.36 6.77 


1.51 


1.05 


7.21 


3.45 


44.99 


1892 


.. 1.91 


4.29 


2.01 


5.35 


5.64 1.51 


4.42 3.24 


2.39 


1.06 


4.50 


.75 


37.07 


1893 


. . 2 . 34 


5.02 


4.05 


10.60 


4.15 4.98 


2.17 1.12 












1894 








3.39 


5.22 2 51 


1 31 3 76 


2 29 


2 73 


.27 


3 47 




1895 


. . 4.58 


.50 


1.96 


3.63 


1.85 1.42 


8.27 1.69 


2.75 




5.22 


3.27 




1896 


. . .55 


2.84 


3.81 


.59 


4.84 5.65 


5.44 2.60 


4.53 


1.58 


4.56 


.38 


37.37 


1897 


. . 2.69 


2.57 


13.22 


6.93 


2.31 3.48 


4.59 .51 


1.62 


.44 


8.45 






1898 


. . 6.13 


3.03 


10.59 


3.85 


4.21 2.55 


2.87 3.84 


3.79 


3.24 


4.00 


1.27 


49.37 


1899 


. . 3.78 


2.00 


3.70 


1.10 


4.35 4.91 


3.60 4.08 


.81 


4.00 


2.40 


3.77 


38.50 


1900 


. . 1.63 


3.60 


2.42 


1.37 


3.78 14.31 


7.02 1.43 


3.63 


1.57 


4.38 


1.80 


46.94 



1949] CLIMATE OF ILLINOIS: APPENDIX B 293 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Continued) 



Year 


Jan. 


Feb. Mar. 


Apr. 


May June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


VINCENNES, 


Knox county, Indiana 


, concluded 


1901... 


.86 


2.18 3.70 


3.00 


1.21 6.20 


1.80 


3 90 


2.40 


4.90 


1.63 


5.85 


37.63 


1902 


. . 1.83 


.98 2.99 


1.85 


2.20 6.00 


2.84 


4.68 


2.80 


2.15 


4.40 


4.55 


37.27 


1903 


.. 3.18 


4.59 4.49 


6.23 


1.97 2.28 


3.34 


4.36 


1.30 


3.81 


2.29 


2.62 


40.46 


1904 


, . 5.52 


2.26 10.74 


1.96 


4.39 4.30 


2.16 


4 11 


4.39 


.86 


.71 


3.78 


45.18 


1905 


. . 2.09 


1.84 3.10 


4.15 


3.76 4.71 


8.96 


4.77 


1.60 


8.92 


2.76 


2.82 


49.48 


1906 


. . 3.62 


2.04 6.47 


1.74 


2.51 4.33 


3.28 


4 59 


5.23 


1.95 


5.62 


4.74 


46.12 


1907 


. . 8.21 


.20 4.92 


3.75 


3.24 5.61 


3.47 


4 X6 


.75 


2.90 


4.13 


5.05 


47.09 


1908 


. . 1.15 


8.00 4.56 


6.05 


5.70 2.23 


5.35 


?: 915 


1.60 


.15 


3.20 


1.45 


41.69 


1909 


. . 3.05 


5.95 3.28 


5.25 


4.00 5.00 


5.85 


70 


3.35 


4.10 


3.65 


4.95 


49.13 


1910 


. . 3.50 


3.51 .15 


4.41 


3.76 4.50 


5.93 


1.05 


9.25 


8.80 


2.10 


2.40 


49.36 


1911 


.. 3.18 


2.35 2.20 


6.30 


4.85 4.45 


2.15 


1 80 


14.80 


2.85 


3.82 


3.35 


52.10 


1912 


. . 3.35 


4.06 6.05 


6.05 


4.45 1.95 


5.23 


6.15 


5.70 


1.45 


2.50 


1.20 


48.14 


1913 


..11.35 


1.50 12.95 


4.30 


1.70 1.50 


3.25 


?, 05 


4.40 


3.55 


6.10 


2.50 


55.15 


1914 


. . 1.60 


5.00 2.95 


3.75 


.80 1.35 


2.15 


4 75 


4.10 


4.55 


1.00 


3.00 


35.00 


1915 


. . 4.80 


1.75 1.75 


1.28 


8.05 5.09 


4.73 


6.33 


1.73 


1.63 


3.76 


6.02 


46.92 


1916... 


..10.60 


1.83 2.58 


2.08 


4.60 10.75 


2.45 


5 00 


4.03 


2.27 


2.43 


3.52 


52.14 


1917 


. . 7.37 


.80 4.85 


6.65 


7.35 5.31 


4.39 


3.29 


.42 


4.62 


.79 


1.55 


47.39 


1918 


. . 4.26 


1.11 1.23 


8.38 


6.36 3.18 


5.02 


4.93 


4.74 


3.77 


2.26 


9.17 


54.41 


1919 


. . 1.36 


2.08 5.13 


3.38 


6.51 9.67 


.56 


3.04 


2.39 


12.92 


3.89 


1.40 


52.33 


1920 


. . 3.09 


1.17 6.53 


3.14 


5.41 .89 


1.27 


4.29 




2 99 


2.58 


4.63 




1921... 


. . 2.66 


1.96 6.26 


3.72 


1.81 3.58 


1.20 


6.99 


6.99 


2.21 


5.31 


4.00 


46.69 


1922 


. . 1.35 


2.21 9.47 


5.91 


6.46 3.01 


5.72 


1.58 


.88 


3.79 


2.15 


6.13 


48.66 


1923 


.. 3.19 


2.35 5.74 


4.02 


6.66 5.22 


4.70 


7.76 


2.61 


3.72 


2.45 


7.71 


56.13 


1924 


. . 2.67 


1.32 2.59 


1.93 


5.36 4.74 


2.26 


2.18 


3.99 


.38 


1.80 


3.17 


32.30 


1925 


.. .46 


2.84 2.17 


2.66 


1.41 5.65 


4.15 


3.23 


4.61 


3.24 


5.55 


1.08 


37.05 


1926 


. . 2.45 


2.66 3.84 


4.56 


.77 4.17 


1.42 


3.49 


6.30 


5.46 


2.86 


2.23 


40.21 


1927 


.. 5.00 


1.14 5.21 


5.34 


10.10 4.21 


5.26 


4.82 


5.18 


1.14 


6.60 


4.43 


58.43 


1928 


. . 1.78 


3.15 1.07 


4.58 


3.78 5.90 


1.11 


3.77 


1.47 


5.30 


4.15 


2.34 


38.40 


1929 


. . 6.26 


2.57 3.13 


5.09 


8.08 4.29 


2.00 


2.98 


3.39 


3.04 


2.12 


4.13 


47.08 


1930 


. . 8.84 


3.98 1.30 


2.16 


1.05 3.28 


.22 


4.02 


4.92 


1.88 


1.91 


1.57 


35.13 


1931 


.76 


1.73 3.45 


3.29 


3.00 1.56 


2.18- 


4.47 


5.82 


3.22 


5.48 


4.70 


39.66 


1932 


. . 7.20 


1.49 2.85 


3.15 


.90 3.64 


3.04 


6.74 


6.27 


4.65 


2.78 


6.04 


48.75 


1933 


. . 4.47 


1.77 6.71 


5.61 


11.67 .85 


3.16 


2.41 


2.53 


2.59 


1.05 


3.57 


46.39 


1934 


. . 1.62 


1.21 3.10 


.80 


1.67 2.61 


4.78 


3.19 


6.93 


.34 


3.45 


2.87 


32.57 


1935 


. . 3.37 


.51 6.39 


2.86 


9.17 6.23 


1.17 


4.03 


2.35 


2.69 


3.04 


1.30 


43.11 


1936... 


. 1.82 


2.17 2.72 


3.01 


.99 2.02 


2.63 


.90 


2.53 


4.32 


4.66 


4.15 


31.92 


1937 


..13.42 


2.07 1.35 


5.84 


3.02 5.53 


1.49 


2.77 


3.73 


7.17 


1.32 


3.37 


51.48 


1938 


. . 1.62 


2.18 9.63 


2.63 


6.61 5.21 


7.77 


4.15 


3.20 


1.28 


3.35 


1.61 


49.24 


1939 


.. 4.51 


4.19 4.08 


7.89 


1.53 5.67 


2.91 


1.66 


1.09 


1.31 


1.87 


1.76 


38.47 


1940 


. . 1.33 


2.75 .87 


6.86 


4.20 1.83 


1.73 


2.26 


1.04 


.86 


3.64 


2.98 


30.35 


1941 


. 1.07 


.80 1.18 


3.70 


2.47 5.04 


1.35 


5.45 


.61 


7.21 


3.47 


3.08 


35.43 


1942 


. . 1.45 


2.63 4.34 


2.92 


3.13 8.44 


6.12 


1.28 


.74 


1.31 


6.11 


2.09 


40.56 


1943 


. . 1 . 29 


.77 3.78 


3.53 


10.50 1.35 


2.60 


.33 


2.81 


1.42 


2.08 


2.00 


32.46 


1944 


. . .52 


3.21 3.48 


6.78 


4.38 1.60 


1.31 


5.01 


1.13 


1.24 


1.78 


1.63 


32.07 


1945 


. . 1.42 


5.00 12.33 


6.07 


4.87 9.50 


1.67 


4.68 


9.67 


1.43 


4.60 


2.09 


63.33 


1946 


. . 1.57 


3.27 1.18 


2.62 


8.60 4.16 


2.63 


4.47 


1.74 


1.96 


6.91 


3.00 


42.11 


Aver 


. . 3.59 


2.71 4.48 


4.04 


4.27 4.32 


3.40 


3.58 


3.61 


3.09 


3.63 


3.21 


43.93 


WATERLOO, Monroe 


county 


1911 


















2.79 


1.66 




1912 


. 1.73 


2.07 4.19 


6.87 


3.28 4.37 


1.74 


4.35 


2.52 


2.08 


1.44 


.48 


35.12 


1913 


. . 5.89 


1.00 7.98 


3.32 


1.49 2.70 


3.74 


.30 


5.12 


5.19 


2.55 


1.42 


40.70 


1914 


. . 1 . 53 


3.45 1.49 


2.11 


.18 .80 


.99 


7.15 


2.65 


8.08 


.75 


3.07 


32.25 


1915 


. . 2.71 


2.16 .52 


1.28 


7.00 7.45 


4.64 12.38 


1.71 


.71 


2.50 


3.02 


46.08 


1916... 


.. 9.72 


1.94 1.23 


1.77 


3.67 6.89 


3.52 


6.52 


3.31 


2.26 


2.31 


3.26 


46.40 


1917 


. . 2.49 


.08 1.99 


6.05 


4.93 1.54 


5.16 


2.95 


1.31 


2.06 


1.20 


.92 


30.68 


1918 


.. 1.86 


1.52 1.12 


8.83 


5.94 1.29 


2.04 


4.33 


4.52 


4.00 


3.06 


3.69 


42.20 


1919 


.. .34 


2.20 1.59 


2.60 


5.40 3.31 


5.77 


3.28 


1.25 


11.79 


3.21 


.82 


41.56 


1920 


.. 3.13 


.93 3.72 


3.45 


8.89 1.56 


1.11 


5.10 


3.20 


2.72 


.51 


2.64 


36.96 


1921 


. 1.60 


.74 6.00 


6.27 


4.49 4.33 


.78 


3.89 


5.46 


1.84 


4.99 


2.09 


42.48 


1922 


. . .85 


1.57 5.89 


7.96 


2.26 2.08 


2.97 


1.30 


1.02 


3.43 


2.13 


4.81 


36.27 


1923 


.. 3.00 


1.58 3.92 


3.83 


4.91 4.69 


1.51 


8.68 


2.45 


4.64 


2.02 


3.93 


45.16 


1924 


. . 1.09 


1.42 3.25 


2.16 


6.51 5.43 


4.51 


3 . 57 


3.93 


.42 


1.89 


4.98 


39.16 


1925 


.. .69 


2.44 1.77 


3.08 


1.33 8.29 


2.29 


1.94 


7.35 


3.50 


3.46 


1.57 


37.71 



294 BULLETIN NO. 532 

Table 11. SOUTHERN ILLINOIS: Monthly and Annual Precipitation 

(Concluded) 



Year 


Jan. 


Feb. 


Mar. 


Apr. May 


June 


July Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Annual 


WATERLOO, Monroe 


county, concluded 


1926 


. 1 83 


2 66 


3.28 


3.03 1.28 


1.22 


2 . 69 3 . 93 


8.78 


4.62 


3.15 


1.55 


38.02 


1927 


.3.78 


.93 


5.53 


8.85 7.60 


3.32 


3.42 3.48 


1.42 


2.99 


7.15 


2.66 


51.13 


1928 


1 65 


2 47 


1 79 


3 97 2 89 


9.70 


3 . 48 1 . 82 


1.53 


1.70 


2.84 


2.39 


36 23 


1929 


3 02 


1.23 
2.61 


2.59 
1.26 


4.69 11.05 
.85 2.27 


5.36 
1.97 


2.33 3.03 
1.04 .19 


3.00 
4.86 


4.83 
2.72 


1.46 
1.98 


4.16 
1.02 


46.75 
27.25 


1930 


. 6.48 


1931 


40 


1.97 


2.62 


3.58' 4.20 


1.32 


3 . 65 5 . 59 


3.66 


4.12 


6.55 


3.21 


40.87 


1932 


. 3.48 


1.14 


1.80 


2.68 .68 


3.38 


3.64 5.57 


1.53 


3.81 


1.89 


3.02 


32.62 


1933 


1 65 


1 28 


2 94 


4 47 8.33 


.42 


4.46 1 07 


5.25 


3.49 


1.39 


1.12 


35.87 


1934 


. 1.60 


1.24 
1.28 

1 74 


3.99 
5.63 

1 09 


4.19 1.53 
3.14 8.89 

2 . 42 1 . 28 


3.38 
6.53 

2.56 


.61 4.41 
3.78 2.75 

1 . 33 .90 


8.10 
5.65 

4.48 


1.85 
2.25 

4.02 


3.83 
5.78 

3.77 


2.51 
1.32 

2.68 


37.24 
49.79 

27.56 


1935 . . . 


. 2.79 


1936 


1 29 


1937 


. 6.23 


1.53 
4 93 


1.89 
7 38 


6.34 2.05 
2 78 6 13 


5.41 

8 49 


1.74 2.08 
1 85 2 60 


1.53 
2 05 


5.03 
1 11 


1.83 
6 15 


4.08 
2 86 


39.74 
48 41 


1938 


2 08 


1939 


3 67 


3 74 


2 08 


4 82 1.83 


5 97 


6.92 8.81 


1.07 


1.17 


2.82 


1.56 


44.46 


1940 


. 1.84 


1.73 

42 


.89 
50 


4.48 2.15 
4 52 1 90 


3.12 
2 68 


1.69 4.68 
1.30 5.08 


.07 
5 17 


2.02 
7.13 


4.35 
3 63 


2.89 
1.41 


29.91 
36.42 


1941 


2 68 


1942 


. 2 48 


4.22 


3.02 


2 . 38 '4 . 19 


8.69 


6 . 50 2 . 25 


2.23 


4.27 


5.45 


4.41 


50.09 


1943 


. .85 


.87 


2.87 


2.71 9.40 


7.21 


2.29 2.24 


3 .'91 


2.61 


1.44 


1.45 


37.85 


1944 
1945 . . . 


. .71 
1 54 


3.11 
3 20 


2.73 
11.15 


5.57 6.64 
5.61 5.45 


2.02 
4.59 


5.89 2.53 
1 . 67 .55 


2.31 
8.52 


.59 
2.74 


1.22 
2.08 


2.60 
1.59 


35.92 
48.69 


1946 


1 85 


3 07 


2 83 


2 67 7 45 


1 36 


3.01 8 31 


1 62 


1 95 


6 17 


2 00 


42 29 


Aver. . . 


. 2.53 


1.96 


3.21 


4.10 4.50 


4.10 


2.97 3.93 


3.50 


3.36 


3.05 


2.47 


39.68 



APPENDIX C 

PRECIPITATION DURING GROWING SEASON 

The three following tables give precipitation by 10-day intervals 
during the growing season (April thru September). Records from 
66 stations in northern, central, and southern Illinois are in- 
cluded. Most of the records are from 1921 thru 1946, altho some 
of the records are shorter, and one (Urbana) is for 1889 thru 
1946. 

Measurements are in inches. 



Index to Weather Stations 



Page 

Marengo 303 

Minonk 304 

Monmouth 305 

Morris . .306 

Morrison 307 

Mount Carroll.. ..308 



Page 

Pawpaw 309 

Pontiac 310 

Rockford 311 

Sycamore 312 

Tiskilwa 313 

Walnut.. ..314 



Northern Illinois (Table 12) 

. Page 

Aledo 296 

Aurora 297 

Chicago 298 

Dubuque 299 

Galva 300 

Kankakee 301 

LaSalle 302 

Central Illinois (Table 13) 

Beardstown 315 Grafton 324 Peoria 333 

Bloomington 316 Griggsville 325 Quincy 334 

Carlinville 317 Havana 326 Roberts 335 

Casey 318 Hoopeston 327 Springfield 336 

Charleston 319 Lincoln 328 Tuscola 337 

Danville 320 Macomb 329 Urbana 338 

Decatur 321 Morrisonville 330 White Hall 341 

Effingham 322 Palestine 331 Windsor 342 

Fairview.. ..323 Paris.. ..332 



Southern Illinois (Table 14) 



Anna 343 

Cairo 344 

Carbondale . . . . 345 



Golconda 350 

Grand Chain 351 

Greenville.. ..352 



Nashville 357 

New Burnside 358 

Olney 359 



Chester 346 Harrisburg 353 Salem 360 

Du Quoin 347 Mascoutah 354 Shawneetown 361 

Edwardsville 348 McLeansboro 355 Sparta 362 

Fairfield . . . . 349 Mount Carmel . . . . 356 Waterloo 363 



295 



296 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS : Precipitation During Growing Season 
(Inches) 



ALEDO, 


Mercer county 


1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


1 


.26 
.98 
.52 

.11 
.72 
.65 

.12 
.01 
.06 

.06 
.16 
.86 

.05 
.12 
.25 

.84 
.49 
.57 

.83 


1.70 
.77 
.15 

.89 
.84 
2.05 

.19 
.70 
.44 

1.81 
2.46 
.63 

.02 
.03 
.61 

2.20 
.10 
T 

15.59 


.44 
.17 
.52 

.14 
. 3.24 
' .88 

2.98 
.97 
1.46 

1.27 
.40 
.46 

1.53 
.17 

.69 

1.42 
.62 
2.00 

19.36 


l 

2 
2 
6 

2, 

2 
2 

23 


.18 
,58 
60 

.48 
.17 
.13 

.39 
.07 
,17 

.54 
56 
,26 

.23 

.02 
,41 

,35 

89 
,38 

,41 


.45 
76 
1.88 

.08 
.73 
.11 

3.39 
.92 
2.12 

2.24 
.43 

1.15 

.88 
1.06 
.70 

.61 
5.31 
1.17 

23.99 


.80 
.04 
.49 

1.06 
.36 
.40 

.10 
6.58 
.61 

1.23 
T 
2.02 

3.98 
3.26 
.71 

6.71 
3.27 
1.80 

33.42 


1.94 
1.23 
.81 

.89 
1.99 
2.72 

2.86 
.31 
.61 

.23 
.13 
1.71 

.01 
1.07 
.49 

1.77 
1.41 
1.30 

21.48 


2.61 
1.43 
.55 

.28 
2.31 
.14 

.81 
.89 
3.37 

2.78 
2.17 
.81 

1.73 
.64 
2.03 

.04 
2.19 
.12 

24.90 


.68 
3.50 
2.73 

T 
1.93 

.28 

1.21 
3.12 
.33 

2.34 
3.49 
T 

1.90 
.04 
.38 

3.70 
.88 
.54 

27.05 


April 11-20 . . . 


. . . 1 


April 21-30 


. . . 3 


May 1-10 


1 


May 11-20 


. . 1 


May 21-31 




June 1-10 




June 11-20 


. 5 


June 21-30 . . . 


. . 1 


July 1-10 




July 11-20 


. . . 1 


July 21-31 




Aug. 1-10 


. . . 4 


Aug. 11-20 


. . . 2 


Aug. 21-31 




Sept. 1-10 


. . . 3 


Sept. 11-20 


. . . 4 


Sept. 21-30 


. . . 1 


Total 


. 34 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





.93 
.27 

.67 
.71 
.43 

.87 
.19 
.61 

.40 
T 

.27 

.26 
,04 
,25 

T 
.32 
.43 

.65 


.78 
1.87 
.65 

.70 
2.99 
.64 

1.90 
1.70 
T 

1.98 
1.12 
1.59 

.28 
.11 
.42 

2.57 
.55 
2.59 

22.44 


.53 
.59 
.50 

2.01 
.06 
1.56 

3.83 

1.00 

1.41 
3.95 

.80 


1.53 
1.10 


1 

1 
3 
2, 

3 
1 

2. 
19 


.40 
00 
,26 

73 

77 
67 



06 

.50 

,47 
,34 

16 
63 
21 


52 
65 

.37 


1.89 
T 
.15 

.06 
.45 

.87 

1.46 
.28 
1.99 

.72 
5.09 
.07 

1.73 
1.14 
.37 

5.29 
2.33 
1.53 

25.42 


.94 
.94 
.23 

3.52 
1.35 
2.25 

1.82 
3.57 
2.18 

1.65 
.12 
1.43 

.59 
2.81 
.19 

2.07 
.03 
2.29 

27.98 


.71 
.05 
.54 

.88 
.33 
.07 

.38 
T 

.28 

.01 
.02 
.21 

1.45 
.46 
1.86 

2.63 
4.60 
3.18 

17.66 


1.43 
.72 
1.94 

1.39 
1.77 
3.18 

.85 
1.75 
.26 

.17 
2.24 
.12 

.75 
.52 

.17 

.70 
.04 
.65 

18.65 


2.24 
.65 
.74 

1.88 
4.45 
.89 

3.22 
2.99 
1.43 

3.43 

.72 
2.72 

2.32 
2.05 
.24 

.49 
1.54 
T 

32.00 


April 11-20 


. . . 2 


April 21-30 




May 1-10 




May 11-20 




May 21-31 


. . . 1 


June 1-10 




June 11-20 


. 5 


June 21-30 


. . . 1 


July 1-10 


. . . 1 


July 11-20 




July 21-31 . . . 




Aug. 1-10 


1 


Aug. 11-20 


. .. 7 


Aug. 21-31 




Sept. 1-10 




Sept. 11-20 




Sept 21-30 




Total 


. . . 24 






1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


. . 1 


.34 
.02 
.46 

.17 
.17 
.54 

.80 
.35 

.77 

.40 
.17 
.19 

.22 
,82 
.36 

T 
39 
.21 

.38 


1.13 
1.30 
1.34 

.08 
.47 
1.31 

1.15 
1.25 
.46 

.13 
.46 
2.00 

1.29 
2.55 

.84 

.97 

T 

16.73 


1.79 
3.07 
.02 

.73 
1.85 
1.19 

2.38 
1.31 
1.95 

1.42 
.38 
.53 

.43 
1.48 
T 

3.80 
.22 
1.78 

24.33 


1 
1 

1 

3 
2 
1. 

1 
1 

18, 


.72 
T 
44 

.10 
.84 
69 

.44 
.46 
.69 

05 
10 

18 

62 
T 
21 

67 
49 
,54 

24 


1.01 
.22 
4.15 

1.35 
4.37 
.43 

2.74 
1.19 
1.09 

.91 
1.33 
.52 

1.83 
1.00 
.62 

.39 
1.09 
T 

24.24 


.82 
1.84 
4.24 

1.50 
.81 
2.36 

1.03 
2.73 
1.65 

.16 
.29 
2.11 

.14 
1.23 
2.23 

T 

2.13 
.80 

26.07 


.43 

2.12 
1.54 

3.26 
3.09 
.69 

.58 
1.34 
1.97 

.27 
.20 
.40 

.36 
.29 
T 

.35 
2.08 
2.98 

21.95 


.28 
.33 
.21 

2.39 
1.62 
.75 

T 

4.87 
2.78 

T 
1.06 
.98 

2.15 

2.00 
T 

.44 
.65 
1.21 

21.72 


1.02 
1.16 
1.11 

1.13 
1.67 
1.19 

1.39 

2.06 
1.65 

1.29 
1.06 
.98 

1.47 
1.56 
.62 

1.58 
1.45 
1.19 

23.58 


April 11-20 


. . . 2 


April 21-30 




May 1-10 


. . . 1 


May 11-20 




May 21-31 


. 1 


June 1-10 


. . . 1 


June 11-20 


. . . 1 


June 21-30 


. .. 3 


July 1-10 


. . . 1 


July 11-20 


. . . 1 


July 21-31 .... 




Aug. 1-10. . . 


. 3 


Aug. 11-20 


.. 2 


Aug. 21-31 




Sept. 1-10 




Sept. 11-20 




Sept. 21-30 




Total ., 


. 23 







1949] 

Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



297 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



AURORA, Kane county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


38 ' 


1.13 
.64 
.33 

.66 
.95 
2.86 

T 
.35 
.13 

1.15 
1.23 
1.17 

.94 
.45 
.13 

3.72 
.40 


16.24 


.85 
.52 
.20 

T 
2.21 

.77 

1.81 
.34 
.71 

1.64 
.63 

.85 

.85 
.96 
.98 

2.03 
.62 

.29 

16.26 


.27 
.47 
.65 

1.44 
.50 
1.08 

3.15 
.18 
3.21 

.73 
.15 
1.80 

4.22 
2.08 
.61 

.74 
1.62 
.63 

23.53 


.50 
1.33 
1.76 

.70 
.87 
T 

1.45 
2.28 
2.33 

1.15 
.69 
,65 

.13 
.10 
.15 

1.35 
2.11 
.96 

18.51 


.87 
T 
.53 

.53 
.92 
.81 



8.28 
.48 

2.09 
T 
1.33 

.67 
.93 
.10 

1.09 
2.41 
4.04 

25.08 


1.50 
3.42 
1.60 

.56 
.90 
2.12 

1.42 
.31 

.68 

.46 
.44 
.23 

.89 
.90 
.55 

.26 
2.74 
2.72 

21.70 


2.29 
.59 
T 

.16 
.57 
.61 

.42 
1.54 
2.51 

2.10 
1.69 
1.11 

1.60 
.16 
2.99 

.28 
.73 
.01 

19.36 


2.18 
3.33 

.84 

.10 
1.23 
1.12 

.04 
5.63 
1.52 

1.22 
.33 
2.01 

1.44 
.23 
.13 

.16 
.14 
2.71 

24.36 


April 1 1-20 . . . 


... 2 . 32 


April 21-30 


... 2.17 


May 1-10 


T 


May 11-20 


.24 


May 21-31 


... 2.14 


June 1-10 


80 


June 11-20 


.15 


June 21-30 


... 2.27 


July 1-10 


.75 


July 11-20 


.20 


July 21-31 


T 


Aug 1-10 


. . 1 49 


Aug. 11-20 


... 1 . 85 


Aug. 21-31 


.16 


Sept 1-10 . . 


60 


Sept. 11-20 


... 3 . 53 


Sept. 21-30 


... 1 . 86 


Total 


20 91 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





.50 
.80 
.70 

.98 
1.95 
1.13 

2.56 
.60 
2.86 

.53 
1.80 
T 

.90 
.07 

.98 

1.75 
.87 
1.50 

20.48 


.10 
.27 

.78 

1.41 
T 
1.16 

3.23 
.45 

1.08 

2.74 

.17 

1.77 

2.67 


.76 

.29 

16.88 


.52 
1.43 
1.23 

3.74 
2.04 
1.03 

.23 
T 
2.25 

2.84 
.73 
.02 

1.57 
.09 

.08 

.08 
.47 
. 3.30 

21.65 


1.19 
.02 

.08 

.05 
.01 
.50 

1.48 
1.43 
2.53 

1.12 
.43 
T 

1.12 
.50 
.53 

2.48 
1.29 
1.54 

16.30 


.24 
1.59 
.29 

2.41 
1.44 
1.31 

.49 
1.52 
1.88 

1.64 
.10 
2.02 

3.55 
3.58 
.45 

1.21 
.02 
2.95 

26.69 


1.00 
.13 
.91 

1.45 
.98 
.24 

.30 
.02 
.35 

.03 
.33 

.07 

.66 
2.11 
2.42 

1.25 
6.67 
2.31 

21.23 


1.11 
1.20 
2.16 

.51 
.96 
1.07 

.62 
1.78 
2.49 

T 
.25 
.16 

.12 
4.43 
.40 

1.44 
.38 
.37 

19.45 


1.45 
.25 
.24 

.34 
2.23 
1.55 

3.89 
.55 
2.34 

1.02 
1.09 
2.15 

.74 
1.73 
1.39 

2.00 

3.88 


26.84 


April 11-20 


... 2.71 


April 21-30 


.41 


May 1-10 


.64 


May 11-20 


.80 


May 21-31 


36 


June 1-10 


... 2.15 


June 11-20 


... 1 . 25 


June 21-30 


2 20 


July 1-10 


. . 1 14 


July 11-20 





July 21-31 


.14 


Aug. 1-10 


.43 


Aug. 11-20 


... 3.43 


Aug. 21-31 


.22 


Sept 1-10 . . . 


... 3 . 23 


Sept. 11-20. . . . 


.05 


Sept. 21-30 


... 1.26 


Total 


. . . 20.42 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


1.21 


1.65 
.91 
.22 

1.85 
1.63 
2.12 

2.04 
.98 
2.08 

.53 
.03 
.52 

.89 
2.49 
2.51 

.16 


.18 

20.79 


.65 
1.38 
T 

1.28 
1.26 
1.43 

1.60 
2.11 
.33 

.32 
.45 
2.44 

.40 
.94 
.12 

4.36 
.09 
2.85 

22.01 


.82 
.12 

.18 

1.20 

1.68 
.44 

1.37 
.69 
.02 

1.46 
.33 

.97 

4.74 
T 
1.75 

2.66 
.96 
1.03 

20.42 


1.00 
.51 
1.45 

1.74 
4.64 
1.39 

.33 
2.41 
.39 

.75 

1.27 
1.01 

1.00 
1.42 
2.40 

.13 

.88 
.14 

22.86 


.33 
1.36 
1.33 

.85 
1.88 
1.12 

1.56 
1.33 
.15 


.06 
1.65 

.04 
.48 
1.58 

.48 
2.07 
.44 

16.71 


1.14 
1.62 
1.32 

3.01 
3.04 
.69 

2.61 
.30 
2.35 

.01 
.22 

.42 

1.31 

1.54 
.70 

2.42 
3.36 
3.50 

29.56 


.44 
.28 
.09 

1.38 
1.15 
.93 

.08 
3.24 
.20 

.65 
.15 
.02 

.87 
2.39 
.06 

1.15 
.02 
.30 

13.40 


.90 
1.11 

.78 

1.10 
1.32 
1.10 

1.10 
1.47 
1.50 

1.01 
.53 

.81 

1.30 

1.24 
.95 

1.35 
1.39 
1.39 

20.56 


April 11-20 


. 1 62 


April 21-30 


.84 


May 1-10 , 


1.72 


May 11-20 


.32 


May 21-31 


.72 


June 1-10 


1.54 


June 11-20 .... 


.56 


June 21-30 


... 1.75 


July 1-10 : 


.22 


July 11-20 


... 1 . 14 


July 21-31. .... 


.05 


Aug. 1-10 


1.43 


Aug. 11-20. ... 


.33 


Aug. 21-31 


.64 


Sept. 1-10... 


T 


Sept. 11-20 . . 


.18 


Sept. 21-30 


.87 


Total 


15 14 







298 
Table 12. 



BULLETIN NO. 532 



[April, 



NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



CHICAGO, Cook county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10. . . 


.23 


2.98 
.49 
.23 

.38 
1.59 
1.21 

.02 
.02 
.08 

.86 
1.92 
1.22 

.34 
.23 

.88 

2.88 
1.49 


16.82 


.79 
.29 
.30 

.23 
3.23 
T 

.43 
.25 
1.02 

1.88 
.12 

.67 

2.07 
3.73 
1.96 

1.30 
.96 

.24 

19.47 


.17 
.22 
.45 

1.31 
.42 
.57 

2.76 
.60 
3.24 

.76 
1.95 
.95 

5.97 
1.86 
.29 

.73 
1.50 
.91 

24.66 


.57 
1.19 
1.39 

.66 
.88 
.05 

.13 
2.49 
1.91 

.66 
.98 
.83 

.19 
1.88 
.02 

1.31 
1.48 
.40 

17.02 


1.07 
.02 

.87 

.15 
1.48 
1.10 

.20 
6.02 
1.40 

1.67 
.02 
1.52 

.40 
.32 
.27 

1.49 
1.53 
2.01 

21.54 


1.41 
3.37 
1.23 

.88 
1.14 
2.38 

1.26 
.36 
.93 

2.24 
.65 

.05 

2.09 
.50 

.58 

T 
3.11 
3.61 

25.79 


1.63 
1.65 
.06 

.17 
1.13 
.29 

.35 
3.32 
3.30 

2.02 

.75 
.18 

2.73 
.24 
2.06 

.30 
1.53 
.04 

21.75 


1.39 
2.75 
.65 

.18 
1.16 
.95 

T 
3.81 
1.15 

.95 
.83 
.40 

2.26 
T 
1.23 

.35 
.55 
2.13 

20.74 


April 11-20 


... 2.78 


April 21-30 


... 1.46 


May 1-10 , 


.03 


May 11-20 . . . 


.09 


May 21-31 


.68 


June 1-10 


.42 


June 11-20 . 


. . .21 


June 21-30 .... 


.94 


July 1-10 


1.79 


July 11-20 


.07 


July 21-31 


.01 


Aug. 1-10 


1.42 


\ug 11-20 


3 15 


Aug 21-31 . . . 


.35 


Sept. 1-10 


1.30 


Sept. 11-20 


... 2.40 


Sept 21-30 


. 2 02 


Total 


... 19.35 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 


.01 


.62 
.54 
.59 

2.11 
2.33 
.64 

2.27 
.41 
2.10 

.05 
1.90 
.73 

1.26 
2.82 
1.59 

2.63 
.76 

1.75 

25.10 


.11 
.09 

.38 

1.90 
.09 
.90 

2.39 
.16 
2.24 

3.24 
.03 
1.40 

1.52 
T 
1.56 

T 
.57 
.55 

17.13 


.67 
1.33 
.61 

3.30 
1.15 

.58 

.61 
.02 
2.81 

1.96 
.73 

.03 

1.06 
.05 
.03 

.10 
.68 
3.00 

18.72 


1.06 
.19 

.07 

.01 
.01 
.65 

.19 
.32 
1.73 

.19 
.22 
.01 

.64 
1.93 
.84 

1.52 
.42 
2.09 

12.09 


.38 
1.05 
.34 

2.46 
3.37 
1.26 

.55 
3.17 
1.31 

1.42 
T 
1.63 

1.66 
1.57 
.33 

.90 
.29 
2.09 

23.78 


1.05 
.43 
1.06 

1.43 
.62 
.03 

.34 
.07 
.62 

.04 
.10 
.08 

.32 
2.56 
1.41 

.76 
6.45 
1.76 

19.13 


.94 
1.41 
2.26 

.41 
.69 
.54 

1.44 
2.10 
1.48 

.50 
.78 
.13 

.02 
2.66 


.54 
.56 
.79 

17.25 


1.82 
.21 
.17 

.19 
2.57 
1.22 

3.52 

.28 
2.98 

.62 
1.06 
2.22 

.82 
.55 
.75 

2.65 
2.45 
.19 

24.27 


April 1 1-20 


... 2.04 


April 21-30 . 


25 


May 1-10 


.64 


May 11-20 


... 1.21 


May 21-31 


31 


June 1-10 


... 1 . 22 


June 11-20 


.43 


June 21-30 


.84 


July 1-10 .... 


. . 1 . 70 


July 11-20 


.04 


July 21-31 


.89 


Aug. 1-10 


... 1 01 


Aug. 11-20 


.15 


Aug. 21-31 


.01 


Sept. 1-10 


1 17 


Sept. 1 1-20 


.06 


Sept. 21-30 


.06 


Total 


12 04 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


1.29 


2.01 
.61 
.55 

2.36 
.81 
1.99 

.19 
.22 
.90 

.34 
.45 

.50 

1.71 
1.41 
.83 

.02 
T 
.29 

15.19 


.62 
1.97 
.04 

1.58 
.71 
1.13 

1.52 
1.66 
.25 

.09 
.40 
.61 

.08 
1.29 
.79 

3.87 
.08 
1.25 

17.94 


1.20 
.39 
T 

.84 
1.82 
1.84 

.81 
1.05 
.01 

1.62 
.50 
1.49 

3.5.4 
T 
1.32 

2.79 
1.05 
.98 

21.25 


.56 
.95 
1.37 

2.49 
3.67 
1.02 

.83 
.67 
.03 

2.95 
.53 
.45 

.69 
1.53 
2.95 

.29 
.70 
.13 

21.81 


.51 
1.54 
1.02 

.69 
1.46 
2.19 

.96 
3.01 
1.10 

.48 
.34 

.68 

.01 
1.05 
1.21 

.19 
.81 
.37 

17.62 


2.02 
1.31 
.93 

3.81 
3.12 
.90 

2.02 
.49 
1.26 

.07 
.09 
.35 

.71 
.78 
1.20 

.81 
1.21 
4.15 

25.23 


.71 
.26 
.07 

.75 
1.82 
1.04 

.07 
3.27 
.02 

1.21 
.01 

T 

1.35 
.70 
.04 

1.43 
T 
.53 

13.28 


.99 
1.10 
.65 

1.16 
1.42 
.99 

1.08 
1.34 
1.34 

1.18 
.59 

.67 

1.31 
1.23 

.88 

1.13 
1.18 
1.22 

19.46 


April 11-20 


... 1.47 


April 21-30 


46 


May 1-10 


... 1 . 23 


May 11-20 


.25 


May 21-31 


... 2 18 


June 1-10 


. 3.52 


June 11-20 


.40 


June 21-30 


... 1 21 


July 1-10. . . 


1.44 


July 11-20 


.87 


July 21-31 


.43 


Aug. 1-10. . 


.24 


Aug. 11-20 . . . 


92 


Aug. 21-31 


.31 


Sept. 1-10... 


T 


Sept. 11-20 


.02 


Sept. 21-30 


.47 


Total . . . 


16 71 







1949] CLIMATE OF ILLINOIS: APPENDIX C 299 

Table 12. NORTHERN ILLINOIS: Precipitation During Growing Season 

(Continued) 



DUBUQUE, Dubuque county, Iowa 


1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10. .. 




,93 
04 
.73 

19 
,40 
67 

16 
10 
28 

,17 

74 
57 

58 
56 
,15 

04 
,50 
81 

62 


2 

1 
2. 

2 
1 
1 

1 

2, 
1 

20 


,04 
75 
.10 

48 
,46 

85 

08 
.93 
19 

,89 
93 
19 

73 
04 
.22 

13 

,27 
T 

,28 


.75 
.29 
.44 

.07 
1.13 

.66 

1.06 
.18 
2.42 

.68 
.15 

.84 

1.76 
.66 
2.35 

1.80 
2.94 
.30 

18.48 


.29 
.10 
.73 

.47 
.77 
.92 

2.01 
1.01 
2.35 

1.32 
1.21 
1.58 

2.56 
3.37 
1.12 

1.26 
.94 

.24 

22.25 


.01 
.44 
1.72 

.35 
.49 
.12 

1.79 
6.40 
2.61 

4.81 
.93 
2.19 

1.74 
.17 
T 

1.64 
.49 
2.03 

27.93 


.54 
.32 
1.38 

.23 
1.08 
1.16 

.80 
2.73 
.23 

3.11 
.09 
2.69 

.56 
1.11 . 

.18 

2.51 
1.57 
1.40 

21.69 


1.37 

1.80 

.78 

3.85 
1.27 
2.79 

.31 
1.45 
.55 

.13 
.03 

.68 

.02 
.92 
.53 

5.72 
2.69 
2.29 

27.18 


.98 
.71 
.02 

.12 
.87 
.56 

.85 
1.86 
1.16 

.58 
2.32 
.32 

2.67 
1.44 
5.27 

.35 
.85 
.07 

21.00 


1.06 
.84 
1.57 

.22 
.45 
.72 

T 
3.11 

1.58 

.92 
.35 
.20 

1.80 
.03 
T 

.26 
.38 
.91 

14.40 


April 11-20 


2 


April 21-30.. : . 


. . . . 1 


May 1-10 




May 11-20 




May 21-31. . . . 


. . . . 1. 


June 1-10 


1 


June 11-20 




June 21-30. . . . 


. . . . 2, 


July 1-10 




July 11-20. . . . 


1. 


July 21-31. . . 




Aug. 1-10 


1 


Aug. 11-20. ... 


1. 


Aug. 21-31 


... 1 


Sept. 1-10 . . . 


2. 


Sept. 11-20.. . . 


. . . . 4 


Sept 21-30 


1 


Total 


. 25 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 . . . 




16 
96 
,22 

98 

58 
77 

70 
56 
95 

,21 
T 
73 

,80 
T 
,12 

.08 
08 
36 

,26 


1. 
1 

1 

1 

1 

2 
3 
17 


,12 
09 
22 

,10 
43 

47 

02 
73 
56 

,54 
.91 
,12 

,55 
T 
.47 

.49 
,61 
,57 

,00 


.94 
.19 
.68 

.80 
.40 
1.82 

1.02 

2.37 
.70 

2.09 

.06 

.83 
.70 
2.43 


1.71 

T 

16.74 


.83 
.20 
.50 

1.62 
4.23 
1.39 

T 


1.74 

2.67 
.28 
.89 

1.80 
.52 

T 

.35 
1.31 
1.62 

19.95 


.96 
.07 
T 

.27 
.28 
.21 

1.03 
.94 
1.13 

3.67 
1.19 
.62 

1.22 
1.49 

.58 

3.69 
1.91 
.94 

20.20 


.83 
.59 
.15 

2.37 

.88 
.70 

2.47 
1.15 
1.13 

.84 
.24 
2.74 

.81 
3.76 
.05 

1.83 
.25 
.22 

21.01 


.52 
.09 
.23 

.92 
.04 
.47 

3.08 
.46 

.12 

T 
.37 
.34 

.22 
.67 
3.79 

1.23 
2.68 
1.19 

16.42 


.68 
1.29 
1.32 

.94 
1.78 
1.49 

1.14 
4.84 
T 

.45 
1.05 
.07 

.51 
1.12 
T 

.72 
.03 
1.12 

18.55 


.55 
.47 
.99 

1.50 
1.92 
3.48 

1.31 

3.78 
2.56 

1.93 
.68 
.35 

2.68 
3.40 
.02 

4.85 
4.24 
T 

34.71 


April 11-20 


3, 


April 21-30 




May 1-10 . . . 


. . . . 1 


May 11-20. . . . 




May 21-31 


1 


June 1-10 


. 2 


June 11-20. . . 


1, 


June 21-30. . . . 




July 1-10 




July 11-20. . . . 




July 21-31. . . . 




Aug 1-10 


. . . 1 


Aug. 11-20. . . . 




Aug. 21-31. . . . 




Sept. 1-10 


1 


Sept 11-20 . . 




Sept. 21-30 


1 


Total 


19 






1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 . . . 




.25 

.85 
.88 

.93 
.01 
.50 

.87 
.55 
,75 

.77 
.20 
,33 

.21 
.64 
.42 

.14 
,10 
.45 

85 


1 

1 

1 
1 
3 

2 

2 

1 
2 

23, 


,58 
.53 
.31 

,78 
.30 
.92 

.92 

,07 
.49 

.11 
.98 
.62 

.24 
,65 
.83 

,56 
02 
.90 

81 


.97 
2.21 
T 

.38 
.37 
1.35 
1.34 
2.45 
.63 

.19 
.45 
.33 

.12 
.50 
1.05 

6.18 
.54 
2.22 

21.28 


.51 
.07 
2.38 

2.30 
1.03 
2.56 

2.09 
2.23 
1.64 

1.04 
1.83 
.83 

1.51 
.17 
1.12 

1.61 
1.51 
.70 

25.13 


.47 
.77 
2.03 

.49 
1.55 

.77 

1.63 
1.07 
1.72 

.75 
.95 
1.01 

1.73 
3.34 
1.52 

.64 
.85 
.37 

21.66 


.26 
1.49 
1.87 

.33 
2.43 
1.92 

1.52 
5.19 
4.16 

2.85 
.52 
1.79 

1.08 
.92 
2.52 

.04 
2.48 
.68 

32.05 


1.00 
2.15 
.46 

1.11 
2.56 
2.67 

1.69 

1.99 
2.70 

.33 
.09 
1.32 

.42 
1.64 
1.20 

1.91 
1.76 
3.67 

28.67 


.28 
.03 
.54 

.85 
.99 

.28 

.07 
2.61 
1.91 

T 
.40 
.13 

.76 
2.36 
.06 

5.12 
.60 
3.23 

20.22 


.73 
.94 

.82 

.95 
1.03 
1.32 

1.34 
1.95 
1.55 

1.39 

.80 
.94 

1.34 
1.28 
1.15 

1.85 
1.47 
1.20 

22.05 


April 11-20.. . . 


. . . . 1 


April 21-30 




May 1-10 . . . 




May 11-20. . . . 




May 21-31 




June 1-10 .... 


2 


June 11-20 




June 21-30 . . . 


. . . . 1 


July 1-10 


. 3 


July 11-20 


... 1 


July 21-31. . . . 




Aug 1-10 


. 2 


Aug 11-20 . . 


. . . . 1 


Aug. 21-31. . . . 




Sept. 1-10 




Sept. 11-20.. . . 





Sept 21-30 




Total 


. ... 19 



300 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 







( 


SALVA, 


, Henry 


county 












1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10... 


.45 


1.35 


.57 


.11 


.48 


1.04 


2.13 


2.49 


.56 


April 11-20 


... 3.00 


1.84 


.13 


.23 


1.35 


.14 


2.63 


1.07 


2.84 


April 2 1-30 


... 2.66 


.28 


.45 


.95 


2.57 


1.73 


2.27 


:21 


2.60 


May 1-10 


.19 


.67 


.12 


1.65 


.09 


.60 


2.46 


.09 


T 


May 11-20 


.03 


1.12 


2.55 


.38 


1.22 


.73 


3.43 


2.21 


1.49 


May 21-31 


... 1.01 


2.70 


.. .43 


.97 


.18 


.99 


2.50 


.33 


.18 


June 1-10 


1.79 


.02 


.88 


2.21 


.54 


.07 


1.67 


.85 


.65 


June 11-20 


.65 


.46 


.82 


.82 


1.05 


4.65 


.89 


1.47 


3.37 


June 21-30 


... 1.21 


T 


2.66 


5.39 


.60 


.51 


1.37 


3.65 


.15 


July 1-10 


.16 


.89 


.55 


.58 


2.08 


2.51 


.28 


4.09 


3.63 


July 11-20 


... 1.56 


2.76 


T 


.63 


1.26 


.09 


.17 


.39 


1.35 


July 21-31 


.66 


.53 


.43 


1.95 


1.13 


2.48 


.95 


.53 


1.43 


Aug. 1-10 


. 2.97 





1.36 


3.91 


.51 


2.46 


1.72 


1.84 


2.22 


Aug. 11-20 


... 2.52 


T 


.24 


9.39 


.94 


1.74 


.64 


.40 


.14 


Aug. 21-31 


.69 


.94 


1.03 


.21 


T 


1.94 


.66 


.65 


.16 


Sept. 1-10 


... 1.16 


2.66 


.40 


1.56 


.76 


5.82 


3.94 


.01 


.93 


Sept. 11-20 


... 3.87 


.40 


.43 


.94 


2.76 


2.46 


1.53 


2.25 


.90 


Sept. 21-30 


.92 





2.35 


.43 


1.07 


1.43 


2.28 


.35 


.53 


Total 


25.50 


16.62 


15.40 


32.31 


18.59 


31.39 


31.52 


22.88 


23.13 




1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 




.58 




.99 




.31 


.88 


1.68 


2.95 


April 11-20 




.39 




1.29 




1.35 


.08 


.19 


.45 


April 2 1-30 




1.64 




.88 




.27 


.85 


2.69 


.27 


May 1-10. . . 




1.21 


2.79 


2.83 





3.71 


1.19 


1.11 


1.36 


May 11-20 




1.94 


.14 


2.89 


.08 


.79 


.60 


1.04 


3.93 


May 21-31 




1.48 


4.10 


1.60 


.68 


1.65 


.21 


.32 


.90 


June 1-10 


1.89 


1.92 


2.47 


T 


1.28 


1.50 


.44 


1.04 


1.39 


June 11-20 


... 1 . 12 


.06 


.80 





.83 


2.88 


T 


1.62 


.88 


June 21-30 


.16 





1.20 


1.33 


1.74 


2.23 


.53 


.10 


1.23 


July 1-10. . , 


... 1.20 


.45 


3.29 


1.54 


.90 


3.46 


.13 


.14 


3.37 


July 11-20 





.65 





.35 


2.37 


.29 


T 


2.34 


.93 


July 21-31 


.11 





.08 


.17 


T 


1.22 


.29 


.43 


1.63 


Aug. 1-10 


.43 


2.91 


1.48 


1.18 


2.20 


.84 


.73 


.22 


.83 


Aug. 11-20 


... 1 . 85 


1.27 


2.06 


.59 


.88 


.43 


1.05 


.58 


.29 


Aug. 21-31 


.09 


.65 


.27 


.33 


.14 


.35 


1.28 


1.65 


.42 


Sept. 1-10 


.42 


3.13 


.55 


.09 


4.46 


1.44 


1.32 


.63 


T 


Sept. 11-20 


.28 


.64 


1.13 


.73 


2.40 


T 


4.39 


.46 


2.78 


Sept. 21-30 


... 1 . 14 


1.80 


.12 


3.58 


1.04 


.96 


2.61 


.35 





Total 




20.72 




20.37 




23.68 


16.58 


16.59 


23.61 




1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


.31 


1.01 


2.50 


.87 


.61 


.71 


.71 


.38 


1.02 


April 11-20 


. .. 2.66 


1.43 


2.06 


.41 


.24 


1.56 


2.67 


.30 


1.23 


April 21-30 


.53 


1.07 


T 


.30 


4.53 


2.75 


1.70 


.35 


1.37 


May 1-10. . . 


.73 


.35 


.98 


1.17 


1.49 


1.88 


3.23 


2.84 


1.31 


May 11-20 


.27 


.67 


3.82 


3.79 


3.08 


.73 


3.61 


1.89 


1.70 


May 21-31 


... 1 . 39 


1.04 


1.98 


.42 


.34 


1.02 


.66 


1.06 


1.13 


June 1-10 


... 2.82 


.39 


1.95 


2.08 


2.70 


.73 


1.17 





1.25 


June 11-20 


.70 


1.96 


1.81 


2.86 


1.19 


3.28 


1.22 


6.11 


1.60 


June 21-30 


... 3.44 


1.27 


2.54 


.47 


.03 


.23 


1.38 


.89 


1.32 


July 1-10. . . 


. .. 2.60 


.13 


1.22 


3.29 


1.36 


T 


.12 


.38 


1.48 


July 11-20 


91 


.45 


.27 


1.35 


1.04 


.41 


.19 


.20 


.77 


July 21-31 


.10 


2.21 


3.30 


.19 


.10 


1.60 


.94 


.78 


.89 


Aug. 1-10. . . 


. 2.41 


.67 


T 


1.31 


2.20 





.21 


1.01 


1.36 


Aug. 11-20 


... 1.24 


2.15 


1.80 





1.75 


.66 


1.30 


1.99 


1.38 


Aug. 21-31 


.49 


1.16 


.01 


1.64 


.58 


2.74 





T 


.70 


Sept. 1-10... 





.78 


4.19 


1.47 


.28 


.03 


.61 


1.46 


1.47 


Sept. 11-20 


.18 





.29 


.38 


.96 


1.56 


2.41 


.56 


1.33 


Sept. 21-30 


.18 


.37 


1.80 


.60 





1.00 


3.25 


.92 


1.12 


Total 


20.96 


17.11 


30.52 


22.60 


22.48 


20.89 


25.38 


21.12 


22.43 



1949] 
Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



301 



-NORTHERN ILLINOIS : Precipitation During Growing Season 
(Continued) 



KANKAKEE, Kankakee county 


1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 




.43 
90 
.69 

07 
38 
49 

17 
43 
26 

49 
80 
22 

95 
05 
10 

55 

51 

71 

20 


.54 
2.93 
.42 

.60 
1.90 
3.13 

.16 
.74 
.03 

.11 
1.51 

.88 

1.24 
.03 
.22 

.65 
1.19 


16.28 


5 
1 

1 
1 

2 
18 


.80 
,14 
.33 

.16 
,42 
,79 

,73 
,08 
.30 

.01 
T 
,65 

,39 

,82 
70 

71 
,89 
13 

,05 


.05 

.41 
1.09 

.86 
.57 
.86 

2.52 
.08 
3.59 

.96 
1.11 
.54 

6.37 
.98 
.31 

1.4$ 
.73 
.74 

23.25 


.32 

.57 
.81 

.09 
.25 
T 

T 
2.07 
.48 

.33 
1.11 

.64 

.08 
.58 
.03 

1.06 

2.64 
.50 

11.56 


1.12 
.58 
1.29 

2.09 
1.10 
.49 

.15 
4.68 
.39 

1.37 
.40 
2.77 

2.50 
.94 

.47 

3.67 
1.63 
5.05 

30.69 


1.78 
4.21 
2.21 

.77 
2.09 
2.30 

2.53 

.88 
.49 

1.14 
2.63 
.22 

.72 
1.00 
.37 

.11 
.90 
3.86 

28.21 


1.65 
.55 
.15 

.37 
.94 
.22 

.79 
3.93 
1.43 

3.84 
1.20 

.85 

.74 
T 
1.36 

.64 
1.41 
.03 

20.10 


1.38 
1.51 
1.39 

1.41 
2.01 
.85 

.15 
4.23 
.29 

3.40 
.12 
.27 

1.25 
.55 
l.OS 

.40 
.21 
1.49 

21.99 


April 11-20 


... 1 


April 21-30 


... 1 


May 1-10 . 




May 11-20. . . . 


... 1, 


May 21-31 




June 1-10 


1 


June 11-20. . . . 




June 21-30 


... 1. 


July 1-10. . , 




July 11-20 




July 21-31 




Aug. 1-10. . . 


. 2. 


Aug. 11-20 


. 2 


Aug. 21-31 




Sept. 1-10 




Sept. 11-20 


2 


Sept. 21-30 .... 


... 1 


Total 


... 20 , 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10... 




T 
01 
92 

15 
02 
07 

04 
14 

84 

21 
18 
19 

31 
72 
49 

,13 
40 
33 

15 


1.31 
1.04 
1.40 

1.47 
3.14 
.67 

2.35 
.75 
1.41 

.18 
1.69 
T 

1.19 
1.08 
1.54 

.28 
1.43 
.93 

21.86 


L 

2. 

2 

1, 
2 

14 


,12 
,05 
25 

91 
20 
,21 

,87 
71 
39 

.52 

05 

,18 
17 
31 

.11 
.40 
.59 

.04 


2.04 
1.22 
1.28 

2.78 
2.03 
.25 

.01 
.19 
.90 

.19 
.03 
.10 

2.77 

.23 

.35 
.42 
3.35 

18.14 


.87 
.36 
.12 

.41 
.11 
.20 

.92 
1.59 
1.00 

.02 
1.53 
T 

1.70 

2.89 
.30 

4.04 
.29 
2.06 

18.41 


.42 
.99 
.98 

3.72 
.34 
2.36 

1.00 
3.17 
1.60 

.32 
.21 
1.12 

.69 
1.11 
.36 

.96 

1.24 

20.59 


.47 
.30 
2.47 

1.12 
.53 

.67 

.35 
T 
.53 

.58 
.29 
.01 

.54 
1.51 
2.24 

.86 
1.85 
3.48 

17.80 


2.31 
.95 
2.72 

1.41 
.94 
1.04 

1.20 
2.38 
1.45 

.35 
1.50 

.77 

.43 
1.90 
1.66 

.53 
.73 
1.07 

23.34 


2.93 
.89 
.22 

.08 
2.98 
2.05 

3.05 
.08 
1.64 

.95 
.62 
1.22 

1.49 
.42 
1.13 

.76 
2.61 
.03 

23.15 


April 11-20 


. 3 


April 21-30 




May 1-10 




May 11-20 


... 1. 


May 21-31 




June 1-10 


. 2. 


June 11-20 


. . . 1. 


June 21-30 .... 




July 1-10 




July 11-20 




July 21-31 




Aug. 1-10 




Aug. 11-20 





Aug. 21-31. . . . 




Sept. 1-10 


... 2 


Sept. 11-20 




Sept 21-30 . . . 




Total 


... 14 






1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10.. . 




61 
95 
49 

.74 
.15 
,01 

62 
06 
74 

88 
84 
83 

02 
75 
54 

01 
12 

28 

.64 


1.41 
.77 
2.05 

2.52 
.87 
1.40 

.55 
2.35 
1.45 


.04 
.50 

.10 
2.64 
1.58 

.22 

.25 

18.70 


1 

2 

1 

1 
1 

1, 
2. 

i! 
i 

2 
18 


.10 
08 
T 

.34 

.23 
.05 

14 
36 
19 

42 
31 
44 

.29 
.73 

,88 

.24 

.90 

.70 


2.62 
.21 


1.21 
2.53 
.07 

2.14 
2.01 
.21 

1.68 
.33 
.69 

2.50 
.15 
5.58 

.67 
.20 
1.32 

24.12 


.76 
.90 
3.79 

2.10 
5.39 
.79 

1.78 
.70 
.24 

1.09 
1.04 
.59 

1.65 
.52 
.57 

1.27 
.64 
.10 

23.92 


1.01 
3.43 
2.04 

1.34 

.48 
4.58 

2.71 
2.14 
T 

.45 
.97 
1.93 


.75 
1.51 

.35 
.78 
1.15 

25.62 


1.61 

1.70 
1.31 

2.84 
2.84 
.53 

.47 
2.85 
.55 

.25 
.51 
.44 

1.39 
.90 

.49 

1.40 
1.65 
4.22 

25.95 


.37 
.44 
.57 

2.19 
1.56 
.37 

.69 
3.21 
1.38 

1.11 
.15 
.21 

.27 
1.86 
.02 

.40 
.02 
.44 

15.26 


1.08 
1.31 
1.19 

1.30 
1.62 
1.06 

1.23 

1.80 
.95 

.88 
.81 
.70 

1.41 
1.00 
.93 

.99 
.91 
1.36 

20.53 


April 11-20 . . 


. . 2. 


April 21-30.. . . . 




May 1-10 


1 


May 11-20 




May 21-31 
June 1-10. . . . 


... 1 

. 1 


June 11-20 


. . . 2. 


June 21-30 


1 


July 1-10 




July 11-20 
July 21-31 


. . . 2. 


Aug. 1-10. . . 


... 1 


Aug. 11-20 




Aug. 21-31 




Sept. 1-10 




Sept. 11-20. . . . 




Sept 21-30 




Total , 


... 19 







302 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 







LA 


SALLE, La Salle county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


.13 


1.84 
.73 

.47 

.54 
1.23 
3.37 

T ' 
.55 

.04 

.15 
.83 
.22 

2.09 
.08 

.78 

3.28 
2.23 


18.43 


.52 
.24 

.42 

.09 
1.94 
1.34 

.47 
.72 
1.59 

.69 
T 
.37 

2.24 
.17 
.40 

1.83 
1.43 
1.90 

16.36 


.37 
.53 
1.82 

.31 
.45 

.98 

3.56 
.45 

4.85 

.66 
1.16 
3.01 

5.94 
1.82 
1.29 

1.04 
2.47 
.45 

31.16 


.67 
.73 
1.30 

.16 
1.10 
T 

.52 
2.63 
.29 

1.18 
.20 
.29 

.32 
.33 
T 

.51 
1.14 
1.43 

12.80 


1.28 
1.11 
1.06 

.43 
.73 
1.04 

.17 
3.56 
.36 

1.72 
.10 
2.55 

1.85 
1.02 
.15 

3.83 
2.75 
5.10 

28.81 


1.94 
2.61 
1.63 

1.38 
1.86 
1.97 

2.71 
.62 
.41 

.23 
.02 
1.04 

2.03 
.38 
.63 

.83 
.98 
2.70 

23.97 


1.49 
.67 

.08 

T 
1.51 
.24 

.38 
3.43 
2.27 

.74 
1.61 
1.16 

.92 
.18 
3.35 

.43 
2.15 
.06 

20.67 


2.08 
2.23 
.99 

T 
1.06 
.17 

.16 
2.84 
.23 

4.29 
.14 
.38 

2.22 
T 

.17 

.02 
.15 
1.44 

18.57 


April 1U20 


2.28 


April 21-30 


... 2.47 


May 1-10 


.35 


May 11-20. 


.06 


May 21-31. 


2.55 


June 1-10 


. 2.70 


June 11-20 


39 


June 21-30 


.45 


July 1-10 


.04 


July 11-20 


.68 


July 21-31. 


.09 


Aug. 1-10 


. 4.32 


Aug. 11-20. 


.67 


Aug. 21-31 


.97 


Sept 1-10 . . . 


1.39 


Sept. 11-20 


3.97 


Sept. 21-30 


1.37 


Total 


24.88 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 


T 


.53 

.47 
.87 

1.02 
2.38 
.66 

2.56 
T 
1.02 

1.89 
.46 
.06 

1.96 
.83 
1.08 

2.30 
1.26 
1.91 

21.26 


.35 
.23 
1.06 

1.50 
.17 
1.03 

1.87 
1.34 
.34 

2.33 

.21 

6.19 
.30 
.56 

T 
.85 
.22 

18.55 


2.36 
.99 

.84 

2.75 
1.71 
1.42 

T 

1.07 

1.53 
.73 

.12 

2.47 
.28 
.22 

.01 
.38 
2.89 

19.77 


.99 

.08 
.05 

.26 
.01 

.48 

.44 
.15 
1.82 

.86 
1.57 
T 

.91 
2.02 
.40 

4.03 
1.11 
1.09 

16.27 


.32 

1.17 
.36 

3.47 
.97 
1.58 

1.02 
1 31 
2.39 

1.25 
.33 

.82 

4.60 
1.47 
.37 

1.26 
T 
1.75 

24.44 


.99 
.03 
.96 

1.77 
1.00 
.28 

.58 
T 
.24 

T 
.73 
.14 

1.24 
.76 
1.85 

1.86 
3.55 
3.08 

19.06 


1.81 
.95 
2.29 

1.51 

.78 
.78 

1.22 
1.95 
.43 

T 
2.12 
.31 

T 
2.54 
1.48 

.37 
.08 
.36 

18.98 


3.13 
.56 
.27 

.86 
2.97 
1.27 

2.90 
.45 
4.03 

.88 
.86 
2.35 

.26 
.18 
.10 

2.07 
1.86 
T 

25.00 


April 11-20.. . . 


3.31 


April 21-30 


86 


May 1-10 


.08 


May 11-20. 


.98 


May 21-31 . 


18 


June 1-10 


... 1.31 


June 11-20 


90 


June 21-30 


.83 


July 1-10 


.42 


July 11-20 


... 


July 21-31 


.03 


Aug. 1-10 . . . 


1 . 35 


Aug. 11-20 


.21 


Aug. 21-31 


.15 


Sept. 1-10 


... 2.04 


Sept. 11-20 


.11 


Sept 21-30 


23 


Total 


12 99 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


1.16 


1.53 
1.83 
.12 

1.26 
.86 
2.59 

.14 
1.01 
1.47 

.03 
.48 
1.17 

.05 
3.01 
1.78 

1.00 
T 
.06 

18.39 


1.16 
1.89 
.02 

.92 
1.35 
1.06 

1.84 
1.13 
.10 

1.23 
.47 
2.03 

.20 
1.83 
.32 

5.18 
.06 
2.82 

23.61 


1.89 
.20 
.23 

1.36 
.95 
.46 

1.14 
.98 
.06 

2.33 
2.45 
2.16 

2.32 
T 
1.43 

2.06 
.35 

.62 

20.99 


.86 
.51 
4.45 

1.81 
4.72 
.32 

1.92 
.46 
.04 

.88 
.17 
.81 

3.50 
.96 
.91 

.45 
1.33 
.04 

24.14 


.41 
2.12 
2.52 

1.08 
.87 
1.93 

.86 
1.97 
.32 

T 
.01 

.82 

T 
.82 
1.07 

.22 
1.37 
.56 

16.95 


1.10 
1.66 
1.33 

3.28 
3.56 
.43 

1.93 
.66 

.71 

T 
.06 
.09 

.71 
2.37 
.71 

2.12 
1.30 
3.82 

25.84 


.34 
.24 
.31 

3.16 
1.03 
.90 

T 
4.45 
.41 

.47 
.13 
.31 

.39 
1.10 
.11 

1.42 
.19 
.31 

15.27 


1.12 
1.13 
1.04 

1.21 
1.33 
1.09 

1.28 
1.27 
1.08 

.99 
.67 
.80 

1.91 
.93 

.80 

1.52 
1.20 
1.34 

20.71 


April 11-20 


1 97 


April 21-30 


20 


May 1-10 


2.10 


May 11-20. 


.45 


May 21-31.. . . 


... 1 41 


June 1-10 


. 2.86 


June 11-20 


1 03 


June 21-30. . 


... 2 37 


July 1-10. . . 


. 2.00 


July 11-20 


2 09 


July 21-31 


.14 


Aug. 1-10. . . 


1.70 


Aug. 11-20. . 


75 


Aug. 21-31 


.44 


Sept 1-10 





Sept 11-20 


.22 


Sept. 21-30 


.67 


Total . . . 


. 21 56 







1949] 
Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



303 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



MARENGO, McHenry county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


.43 


.72 
1.02 
.13 

.64 
.70 
1.13 

T 
.19 
T 

2.89 
1.85 
1.21 

.34 
.38 
.05 

2.46 
.37 


14.08 


.95 
.44 
.57 

.03 
.99 
T 

2.77 
.48 
1.26 

.81 
.24 
.85 

1.03 
1.64 
3.19 

1.72 
2.48 
.34 

19.79 


.44 
.29 
1.57 

.60 
.41 
1.13 

2.04 
1.80 
3.89 

.53 
T 

1.77 

2.41 

2.28 
.64 

1.01 
.97 
.39 

22.17 


T 
.42 
2.96 

.80 
1.04 
T 

.62 
2.68 
1.39 

2.10 
1.00 
.97 

.43 
.40 


1.06 
2.66 
2.14 

20.67 


1.00 
T 

.85 

.45 
.68 
2.51 

.24 
4.20 
.92 

2.89 
T 
3.63 

.73 
3.79 
.58 

2.45 
1.50 
3.54 

29.96 


1.46 
3.07 
1.41 

2.45 
1.04 
2.79 

.56 
.04 
2.37 

.57 
.44 
.10 

.99 
1.62 
.14 

.90 
2.57 
3.02 

25.54 


2.59 
.80 
T 

.06 
.75 
.65 

.66 
1.94 
4.13 

1.64 
1.04 
.05 

1.38 
.24 
2.36 

.55 
1.46 
T 

20.30 


1.48 
3.19 
.80 

.10 
2.56 
.70 

T 
5.98 
2.12 

1.09 
.22 
1.38 

1.60 
.19 
.06 

.60 
1.47 
3.54 

27.08 


April 11-20 


... 1.23 


April 21-30 


4 11 


May 1-10. . . . 


T 


May 11-20 


.18 


May 21-31. . 


69 


June 1-10 


.65 


June 11-20 


1 25 


June 21-30. 


. 3.01 


July 1-10 


... 1 . 04 


July 11-20 
July 21-31. 


.16 
34 


Aug. 1-10 


.95 


Aug. 11-20 


... 2.27 


Aug 21-31 


60 


Sept. 1-10 . . 


. . 3 93 


Sept. 11-20 


... 2.95 


Sept 21-30 


2 28 


Total 


. . 26 07 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 


T 


.13 
.83 
.70 

.92 
1.57 
.53 

1.70 
.33 
2.05 

1.09 
2.65 
.55 

.37 
.13 
1.00 

1.18 
1.00 
1.40 

18.13 


.28 
.09 
.32 

1.14 
.07 
1.73 

2.46 
.65 
.11 

2.53 

.09 

.46 
.27 
1.63 


1.10 
.09 

13.02 


2.17 
.10 
.75 

3.20 
2.93 
2.39 

.16 
T 
2.52 

2.69 
.91 
.61 

1.47 
.07 
T 

.44 
.79 
1.07 

22.27 


1.02 
T 
.04 

.07 
.06 
.29 

.68 
.96 
2.20 

1.63 
.44 
T 

1.15 
.50 
.06 

2.82 
1.00 
2.45 

15.37 


T 
1.56 
.41 

1.98 
1.59 
2.59 

1.09 
1.24 
1.28 

1.45 
.05 
1.51 

2.11 
1.21 
.15 

2.04 
.06 
.41 

20.73 


1.23 
T 

.38 

.35 
.53 
.50 

3.07 
.08 
.18 

T 
.19 
.21 

.52 
1.99 
4.46 

2.32 
5.18 
2.21 

23.40 


.85 
.73 
2.21 

.15 
.44 
2.38 

.33 
3.10 
1.84 

.11 
.86 
.33 

.41 
3.75 
.51 

1.19 
.60 
.26 

20.05 


.54 
1.01 
.26 

.65 
2.56 
.74 

1.89 
.48 
3.79 

1.24 
1.73 

.87 

1.54 
1.47 
1.31 

5.79 
2.10 


27.97 


April 11-20 


... 2.79 


April 21-30 


51 


May 1-10 


.66 


May 11-20 


26 


May 21-31. 


1 13 


June 1-10 


. . 1 . 52 


June 11-20 


64 


June 21-30 


69 


July 1-10. . . 


. . 1 11 


July 11-20 





July 21-31 


84 


Aug. 1-10. . 


.76 


Aug. 11-20 
Aug 21-31 


.27 
1 10 


Sept. 1-10 . . . 


... 2 34 


Sept. 11-20 





Sept 21-30 


2 85 


Total 


. . 17.47 








1939 


1940 


1941 


1942 


1943 


1944 


194S 


1946 


Aver. 


April 1-10 


.51 


1.02 
1.15 
.11 

1.39 

.89 
1.51 

T 
2.33 
2.57 

.04 
.84 
2.10 

.45 
2.32 
3.44 

.31 

.15 

20.62 


.68 
1.86 
T 

.89 
.85 
2.02 

.67 
.64 
.03 

.19 
.82 
1.36 

1.16 
2.02 
1.41 

5.26 
.16 
2.98 

23.00 


.34 
.35 

.12 

1.88 
1.84 
1.35 

1.63 
2.47 
.26 

1.21 
.33 
1.17 

3.72 
.02 
.83 

2.94 
1.15 
.33 

21.94 


1.00 
.44 
1.91 

.85 
2.86 
.41 

.60 
1.30 
.44 

1.94 
1.61 
.21 

.75 
1.78 
2.77 

.15 
.64 
.25 

19.91 


.40 
1.50 
1.40 

.47 
1.89 
1.54 

.53 
1.36 
1.42 

.12 
.93 
1.01 

.24 
.91 
1.24 

.21 
1.04 
.19 

16.40 


.64 
2.70 
.98 

2.64 
2.83 
1.48 

.89 
.25 
2.00 

.28 
.02 
.94 

2.01 
1.20 
.92 

2.08 
1.08 
3.01 

25.85 


.45 
.14 
.50 

.79 
.56 
1.27 

T 
2.36 
.43 

.08 
.01 
.29 

1.24 
.70 
.05 

.63 
.12 

.57 

10.19 


.78 
1.04 
.89 

.94 
1.18 
1.22 

1.01 
1.42 
1.59 

1.16 
.71 

.88 

1.14 
1.22 
1.11 

1.71 
1.26 
1.31 

20.57 


April 11-20 


1 20 


April 21-30 . . . 


.25 


May 1-10 


1 31 


May 11-20 


.59 


May 21-31 


.31 


June 1-10 


1 47 


June 11-20. . . . 


... 1.05 


June 21-30 


.47 


July 1-10 . . 


1 02 


July 11-20 


... 2.19 


July 21-31. 


42 


Aug. 1-10 


1.42 


Aug 1 1-20 


36 


Aug. 21-31. . . . 


.26 


Sept. 1-10 


.08 


Sept. 11-20 


.45 


Sept. 21-30 


.60 


Total 


... 13.95 







304 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



MINONK, 


Woodford 


county 


1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 




.25 

.63 

.88 

.30 

.29 
.61 

.45 

.74 
.06 

.19 
.93 

,72 

44 
.06 

.78 

.72 
64 
.91 

.60 


.79 
1.24 

.84 

.71 
1.82 
1.71 

.02 ' 
1.41 
.11 

1.23 

2.64 
.24 

.55 

1.66 

2.14 
.35 


17.46 


.74 
.07 
.42 

.09 
2.67 
.83 

.23 
.44 
2.91 

1.98 

.54 

2.18 

.87 
.91 

1.03 
.70 
.95 

17.56 


.05 
.53 
2.37 

.88 
.38 
.76 

3.24 
.36 
6.26 

.23 
1.02 
1.14 

2.30 
5.37 
1.22 

1.35 
1.34 

.68 

29.48 


3 

1 

1 
3 


42 
,16 
49 

39 
.32 


37 

07 
64 


.81 
1.00 
1.05 

.50 
.44 

.87 

.06 
2.99 
.40 

1.18 
.13 
4.34 

1.76 

.85 
.24 

7.34 
1.94 
2.65 

28.55 


1.44 
4.48 
1.65 

.80 
2.95 
2.57 

2.41 
1.14 
.51 

.11 
1.61 
.49 

.85 
2.02 
.55 

.87 

1.90 

26.35 


.63 
.95 
.15 

.07 
1.41 
.36 

.47 
1.69 
2.49 

1.28 
.65 
.16 

2.19 
.11 
1.72 

.56 
1.18 

.48 

16.55 


1.32 
2.00 
1.21 

.51 
2.59 
.21 

.74 
1.21 
1.51 

2.49 
.88 
.14 

2.04 
.15 

1.17 

.47 
.30 
.80 

19.74 


April 11-20 


. 2 


April 21-30 


... 2 


May 1-10 




May 11-20 




May 21-31 


. . . 2 


June 1-10 


... 2 


June 11-20 




June 21-30 .... 


... 3 


July 1-10 




July 11-20 


. 1 


July 21-31 




Aug 1-10 


2 


Aug 11-20 


1 


Aug. 21-31 


... 1 


Sept 1-10 


2 


Sept. 11-20 . 


. . 3 


Sept. 21-30 . . . 


... 2 


Total 


... 32 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





.86 
.21 

.25 

.82 
.32 

.20 
.37 
,04 

.46 

.40 

.37 

.01 
83 

.23 

.70 
.39 

.46 


.88 
.56 
.76 

1.81 
2.91 
.56 

1.94 
.03 
.35 

1.18 
1.46 
.30 

2.70 
.29 

.81 

1.68 
1.80 
1.10 

21.12 


.03 
.40 

.76 

4.10 
.18 
.92 

.45 
.60 

.84 

3.13 

.09 

3.60 
.59 
2.50 

T 
1.46 
.53 

20.18 


.65 
.90 

2.92 
4.02 
.53 

.04 
.36 
.30 

.57 
.20 
-.75 

2.09 
.14 
.41 

T 
.50 
5.53 

20.34 


1 
3 

1 
1 

3 

1 
16 


.44 
.26 
,18 

.03 
T 
44 

.69 

.58 
01 

.95 
75 


.09 
.83 
43 

.18 

.50 
.09 

.45 


.52 
1.20 
.65 

4.86 
.55 
1.21 

.64 
1.55 

2.72 

3.13 
.03 
1.67 

1.62 
1.06 
.05 

1.09 

1.46 

24.01 


.54 
.08 
.67 

2.16 
.61 
.03 

.30 


.22 


.39 
.38 

.57 
.22 
.92 

1.06 
4.86 
2.43 

15.44 


1.43 
.56 
1.90 

1.24 
.62 
.99 

.56 
1.99 
.98 


1.42 
.27 

.60 
.09 
1.10 

.35 
.13 
.29 

14.52 


2.86 
.26 


.68 
2.42 

.84 

1.27 
.53 
2.05 

2.89 
.88 
1.36 

.28 
.28 
2.00 

.05 
1.29 


19.94 


April 11-20 


... 3 


April 21-30 




May 1-10 




May 11-20 . . . 




May 21-31 




June 1-10 


1 


June 11-20 


... 1 


June 21-30 


... 1 


July 1-10. . . 




July 11-20 




July 21-31 




Aug. 1-10. . . 




Aug 11-20 . 


3 


Aug. 21-31 




Sept. 1-10.. . 




Sept 11-20 . 




Sept. 21-30 .... 




Total 


... 15 






1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 .... 


... 1 


.67 
.16 
.40 

.09 

.98 
.71 

.77 
.34 
.81 

.44 
.15 
.55 

.15 
.94 



.05 
.28 

49 


1.01 

.71 
.73 

1.29 
1.46 
1.55 

.04 
1.12 
.32 


1.13 
.14 

1.02 
3.23 
1.60 



.68 

16.03 


1.51 
2.21 


.95 
1.64 
.83 

1.58 
2.17 
2.51 

.26 
.45 

.84 

'94 

1.52 
.15 

2.08 

2.80 

22.44 


1.39 
.47 
.10 

1.54 
1.31 
.16 

2.58 
.74 
.11 

1.70 
1.58 


.53 

3.54 

1.80 
.47 
1.37 

19.39 


5 

2 
5 

1 

5 

1. 
25. 


.54 
.77 
.13 

.76 
.32 
.52 

,86 
.55 
.13 

.11 
.03 
22 

76 
03 
16 

13 
86 
03 

91 


1.07 
3.02 
3.54 

1.48 
.14 
4.69 

.90 
1.05 
.33 


.02 
2.50 


1.76 
2.71 


1.66 
1.08 

25.95 


.96 
2.54 
1.26 

2.34 
2.95 
.46 

.69 

2.31 
2.13 

.48 
.05 
.16 

1.31 
.37 


.91 
1.75 
4.16 

24.83 


.20 
.03 

.68 

3.37 
1.05 
.44 


5.37 
.45 

2.78 
T 
.51 

.87 
.95 
.04 

.47 
.18 
.55 

17.94 


.84 
1.26 
1.08 

1.41 
1.52 
.97 

1.01 

1.22 
1.29 

1.20 

.83 
.71 

1.58 
1.08 
1.02 

1.19 
1.11 
1.34 

20.66 


April 11-20 


... 2 


April 21-30 . . . 




May 1-10 


... 1 


May 11-20 




May 21-31 




June 1-10 


1 


June 11-20 


1 


June 21-30 




July 1-10. . . 


1 


July 11-20. .... 


... 1 


July 21-31 




Aug. 1-10 


3 


Aug. 11-20 




Aug 21-31 




Sept. 1-10 




Sept. 11-20 




Sept. 21-30 . . . 




Total 


... 18 







1949] 

Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



305 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



MONMOUTH, Warren county 


1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 .... 




.51 
39 
00 

02 

64 

,23 
12 

,84 

11 
10 
22 

32 

,14 
12 

07 
36 
,89 

08 


1 

2 
2 
1 

1 

2 
1 

2 
18 


.90 
.59 
.39 

.17 
.12 
.61 

.05 
.77 
.40 

.00 
.57 
.22 

T 
.03 
.64 

.33 
.46 


.25 


.59 
.34 
.26 

.13 

2.47 
.61 

.58 
.50 
1.86 

.70 
.07 
.41 

2.73 
.65 
1.35 

1.21 
.80 

2.87 

18.13 


.31 
.07 
.91 

.53 
.47 
1.28 

2.22 
1.56 
8.24 

.42 
1.10 
2.83 

2.71 
1.15 
2.61 

.85 
.68 
.40 

28.34 


.32 
.91 
2.09 

.23 
.91 
.11 

1.14 
1.65 
2.08 

2.58 
.28 

.77 

1.29 

1.62 


.83 
2.74 
1.97 
21.52 


.95 
.01 
1.27 

.55 
.39 
1.36 

.03 
7.32 
.69 

1.10 
.67 
.93 

2.81 
2.09 
1.08 

5.13 

2.48 
1.84 

30.70 


1.29 
2.00 
.70 

1.76 
1.66 
1.78 

2.17 
2.35 
.12 

1.20 
T 
1.49 

.06 
.63 

.84 

.50 
.57 
1.86 

20.98 


2.35 
.82 
.22 

.08 
1.22 
.05 

1.18 
2.07 
3.23 

1.71 
.36 
1.10 

.82 
.91 
1.92 

.09 
2.48 
.36 

20.97 


.41 
3.08 
3.03 

.06 
1.53 
1.11 

3.64 
3.26 
.09 

3.25 
7.52 
.89 

1.73 
.20 
.53 

.95 
1.64 
.65 

33.57 


April 11-20 


. 2, 


April 21-30 


... 2 


May 1-10 


... 1 


May 11-20 




May 21-31 




June 1-10 


1 


June 11-20 


2 


June 21-30 


... 2 


July 1-10 




July 11-20 . . 


... 1 


July 21-31 


... 1 


Aug. 1-10 


. 2 


Aug 11-20 . . 


... 2 


Aug. 21-31 




Sept 1-10 


... 3 


Sept 11-20 


... 1 


Sept. 21-30 


... 1 


Total 


... 26, 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





68 
29 

64 
57 
00 

69 
25 
32 

,17 

,03 

30 
.91. 
53 

40 

65 
78 

21 


1 

1 
1 
2 

2 
1 

1 

2 
1 

3 

1 

24 


.75 
.39 
.58 

.80 
.34 
.12 

.12 
.19 
T 

.35 

.88 


.82 
.49 
.36 

.42 
.97 
.90 

.48 


.31 
.24 
.45 

1.97 
.10 
1.10 

2.79 
2.56 
1.74 

6.07 


.80 

1.23 
5.34 

.86 


3.14 
.30 

29.00 


.61 
1.28 
.55 

1.56 
4.25 
2.57 



3.34 

1.10 
.20 
.26 

1.40 
.69 
.33 

T 

1.60 
2.78 

22.52 


1.90 
.06 
.50 

.09 
.40 
.73 

2.30 
.25 
1.46 

.86 
3.18 
T 

1.06 
.53 

.08 

3.66 
2.63 
2.41 

22.10 


.88 
1.10 
.14 

3.18 
1.32 
1.93 

3.26 
1.64 
3.31 

.67 
.65 
1.49 

2.83 
1.67 
.09 

2.39 
.02 
.94 

27.51 


.83 
.05 
.99 

1.34 
.19 
.37 

.66 

.37 

.10 
.06 
1.08 

1.38 
1.09 
1.42 

.76 
3.80 
4.37 

18.86 


1.46 
.22 
2.35 

1.44 

.87 
1.01 

1.21 
1.33 
.70 

.55 
2.43 
.29 

1.73 
.82 
.30 

.42 
.07 
.81 

18.01 


2.60 
.43 
.70 

1.78 
2.76 
1.35 

3.33 
.52 
1.97 

2.29 
.99 
3.32 

2.78 
.09 
.46 

1.21 
1.62 
T 

28.20 


April 11-20 


... 1. 


April 21-30 




May 1-10 




May 11-20 




May 21-31. 


... 1 


June 1-10 




June 11-20 


. 2, 


June 21-30 . . 


. . . 1 


July 1-10 


... 1 


July 11-20 




July 21-31 




Aug. 1-10 




Aug. 11-20 




Aug. 21-31 




Sept. 1-10 




Sept 11-20 




Sept 21-30 . . . 


... 1 


Total 


... 14 






1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


... 1 


,09 
37 

17 

,89 
,29 
79 

.87 
,18 
98 

.03 
.67 
37 

.33 
.23 
.45 


.11 

.28 

.10 


1 

1 
1 

1 

1 

1 
2 

13 


.19 
.11 
.49 

.11 
.55 
.15 

.39 
.54 
.66 

.05 

.43 
.49 

.53 
.29 
.62 

.08 

.06 

.74 


.58 
1.32 
T 

.57 
1.84 
4.35 

2.90 
1.57 
2.10 

1.69 

.17 
.60 


2.01 
T 

4.05 
.74 
1.56 

26.05 


1.26 
.32 
.16 

1.18 
3.43 
.65 

4.09 
1.91 
1.13 

3.03 
1.81 


.52 
T 
.75 

1.19 
.53 
.72 

22.68 


.45 
.28 
3.49 

1.46 
3.16 

.48 

4.18 
1.24 
1.57 

1.66 
.88 
1.54 

1.57 
1.39 
2.23 

.18 
.75 


26.51 


.65 
1.75 
3.53 

1.18 
1.71 
2.51 

1.26 

1.75 
.89 

.28 
.22 
1.10 

.16 
.68 
1.67 


1.71 
1.33 

22.38 


.35 
2.36 
1.74 

2.98 
3.27 

.77 

1.33 

2.82 
.51 

1.13 
.30 
.49 

.39 
.88 
T 

1.12 
1.82 
3.29 

25.55 


.15 
.70 
.43 

2.71 
1.85 
.80 


8.40 
1.10 

.07 
.37 
.56 

3.10 
1.58 
T 

1.90 
.62 

.82 

25.16 


.95 
1.07 
1.14 

1.26 
1.55 
1.33 

1.74 
2.07 
1.83 

1.35 
1.06 
.93 

1.48 
1.27 
.74 

1.37 
1.31 
1.35 

23.80 


April 11-20 


... 2 


April 21-30 




May 1-10 




May 11-20 




May 21-31 


... 1 


June 1-10 




June 11-20 . . 


1 


June 21-30 


... 3 


July 1-10 


. . 1 


July 11-20 


... 1 


July 21-31 




Aug. 1-10 


. 2 


Aug. 11-20. 


... 2 


Aug. 21-31 




Sept. 1-10 




Sept. 11-20 




Sept. 21-30.. . . , 




Total 


21 







306 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



MORRIS, Grundy county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


.16 


1.78 
1.04 
.52 

.24 
1.73 
1.50 t 


.45 
.03 

.17 
2.88 
.67 

.47 
.15 
.30 

2.86 
.36 


15.15 


.47 
.27 
.15 

.09 
2.54 
1.01 

.98 
1.04 
1.54 

1.38 
.18 
.66 

1.62 
.11 
1.29 

1.52 
1.61 

.57 

17.03 


.30 
.58 
.53 

.96 
.42 
.53 

2.90 
.15 
3.81 

.52 
.46 
1.88 

3.73 
1.24 
1.19 

1.21 
1.91 
1.17 

23.49 


.50 
1.26 
1.14 

.27 
1.22 
.07 

'.60 
2.12 
.16 

.89 
.32 
.65 

.28 
.51 


.97 
1.28 
.76 

13.00 


1.66 
.65 
1.44 

.03 
.90 
1.54 

.04 
3.41 
.12 

2.04 
.20 
3.28 

1.04 
.35 
.12 

4.12 
2.12 
3.30 

26.36 


1.59 
3.70 
2.35 

.50 
1.34 
2.06 

3.20 
.85 
1.00 

.30 
.61 
T 

1.21 
.26 
1.15 

.05 
1.52 
4.03 

25.72 


1.71 
.56 
.05 

.20 
1.50 
.66 

.67 
2.75 
.86 

2.62 
1.45 
.93 

1.70 
.13 

2.83 

1.24 

1.89 


21.75 


2.29 
2.02 
.72 

.33 
1.42 

.28 

.06 
4.64 
1.05 

1.96 
.19 
.05 

1.46 
T 
.54 

.22 
.40 
1.35 

18.98 


April 11-20 


2 12 


April 21-30 


... 2.35 


May 1-10 


.31 


May 11-20 


.13 


May 21-31 . 


. 1.36 


June 1-10 


. 2.99 


June 11-20 


.05 


June 21-30 


.30 


July 1-10 


.79 


July 11-20 


.44 


July 21-31 


.04 


Aug 1-10 


. 3 92 


Aug. 11-20 .... 


... 1.43 


Aug. 21-31 


... 1.42 


Sept 1-10 


1 06 


Sept. 11-20 


... 3 . 68 


Sept. 21-30 


... 2 . 20 


Total 


24 75 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 


T 


.76 
.64 

.87 

1.69 
2.36 
1.45 

2.34 
.45 
2.44 

.93 
.41 

.17 

.55 
.55 

.82 

1.32 

.78 
1.91 
20.44 


.19 
.13 
1.01 

2.99 
.06 
.60 

1.72 
1.04 
.34 

2.44 


.21 

3.93 
.14 
1.54 


1.20 
.48 

18.02 


2.74 
1.24 
.89 

2.25 
1.61 
.88 

T 


.80 

2.08 
.26 

.14 

2.84 
.24 
.18 

.02 
.15 
2.10 

18.42 


.55 
.23 
.13 

.07 
T 

.47 

1.00 
.08 
2.34 

.26 
1.09 
T 

1.57 
1.10 
.35 

2.55 
.83 
1.23 

13.85 


.14 
1.33 
.60 

4.32 
1.76 
1.25 

.57 
1.54 
1.87 

.45 
.34 
.96 

3.33 

1.09 
.14 

1.25 


1.91 

22.85 


1.03 
.03 
1.53 

2.11 
.44 
.15 

.42 
T 
.49 

.96 
.07 
.12 

.41 
1.84 
1.37 

.72 
5.33 
2.30 

19.32 


1.25 
2.14 
2.28 

.66 
.74 
.55 

.78 
2.48 
.61 

T 
.44 

.59 

T 
1.71 
.40 

.63 
.05 
.26 

15.57 


2.28 
.40 
.15 

.14 
3.19 
2.59 

2.23 
.48 
2.16 

1.55 
1.15 

1.88 

.18 
.52 
.40 

1.77 
2.35 


23.42 


April 11-20 


... 3.55 


April 21-30 


.83 


May 1-10 


98 


May 11-20 


1.42 


May 21-31 


.25 


June 1-10 


1.50 


June 11-20 


1 15 


June 21-30. . . . 


... 1 . 63 


July 1-10 


.40 


July 11-20 





July 21-31 


.34 


Aug. 1-10 


.54 


Aug 11-20 


78 


Aug 21-31 


35 


Sept. 1-10 . . . 


. 3.07 


Sept. 11-20 


.08 


Sept 21-30 


12 


Total . . . 


. . . 16.99 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


1 30 


1.66 
.77 
.55 

1.14 
.86 
3.86 

.72 
.76 
.71 


.02 
T 

.55 
1.13 
3.47 

.38 

.07 

16.65 


.86 
1.64 
.04 

1.13 
1.01 
1.34 

1.44 
.90 
.19 

.49 
.67 
1.02 

.33 
1.65 
.40 

4.25 
.15 
2.36 

19.87 


2.13 

.28 
.25 

1.18 
1.01 
.08 

.95 
.79 
T 

1.73 
1.38 
1.75 

2.04 
T 
4.10 

4.64 
.67 
1.12 

24.10 


1.02 
.67 
2.99 

1.89 
3.65 
.57 

2.14 

.41 
.14 

T 

1.09 
.62 

1.28 
.62 
1.10 

.17 
.86 
.07 

19.29 


.42 
2.75 
2.60 

1.17 
.81 

.38 

1.04 
2.18 
.08 

.04 
.43 
1.42 

.01 
.71 
1.37 

.19 
1.49 
.52 

17.61 


2.14 
1.73 
1.11 

2.97 
2.05 
.33 

.72 
.85 
.76 

.22 
T 
.80 

.96 
2.89 
.33 

1.50 

1.55 
5.09 

26.00 


.25 
.11 
.21 

2.37 
1.21 
1.14 

.02 
3.32 
.10 

.64 
.16 

.18 

.32 
1.56 
.17 

.89 
.02 
.56 

13.23 


1.12 
1.21 
.99 

1.19 
1.31 
.97 

1.18 
1.25 
.97 

.94 
.64 
.73 

1.36 
.80 
1.00 

1.41 
1.17 
1.30 

19.54 


April 11-20 


. . . 1.64 


April 21-30 


.56 


May 1-10 


1.01 


May 11-20. . . 


.66 


May 21-31 


.40 


June 1-10 


. 1 57 


June 11-20 


.59 


June 21-30 


... 1.72 


July 1-10 


. 1.46 


July 11-20 


... 2.31 


July 21-31 


.60 


Aug. 1-10 


... 1.08 


Aug 11-20 


20 


Aug. 21-31. 


.59 


Sept. 1-10 





Sept 1 1-20 


10 


Sept. 21-30. . . . 


.35 


Total 


... 16.14 







1949] 
Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



307 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



MORRISON, Whiteside county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


1.20 


1.69 
.76 
.12 

.74 
1.89 
4.06 

.02 
.63 
.02 

1.80 
2.56 
.55 

1.14 
T 
1.43 

1.68 
.11 


19.20 


.73 
.05 
.52 

.05 
1.90 
.45 

1.59 
1.15 
2.80 

.68 
.40 
.50 

1.25 
.25 
.75 

2.55 
1.72 
.83 

18.17 


.19 
.09 
1.67 

.95 
.40 

.73 

3.17 
.98 

4.11 

1.18 
.03 
2.70 

2.71 
4.59 
2.36 

.68 
1.13 
.26 

27.93 


.25 
1.16 
1.63 

.31 
.60 
.02 

2.02 
4.12 
1.08 

2.23 
.21 
.63 

2.15 
1.58 
T 

1.17 
3.11 
1.65 

23.92 


1.19 
.24 

.42 

.51 
1.40 
1.05 

.07 
4.57 
.40 

4.25 
.05 
3.92 

1.30 
1.58 
.43 

3.38 
2.59 
1.68 

29.03 


1.39 

2.27 
1.13 

.68 
.98 
3.02 

.96 
.20 
1.11 

.38 
.05 

.82 

1.24 
.31 
.24 

1.56 
1.43 
2.18 

19.95 


2.94 
.58 
.02 

.17 
.88 
.40 

.75 
1.82 
1.99 

2.06 
4.18 
.33 

.68 
.06 
.26 

.42 
.95 
.10 

18.59 


.88 
2.71 
1.44 

.17 
.71 
.89 

.25 
3.56 
.36 

2.14 
1.46 
.19 

2.39 
.01 
T 

1.82 
.59 

.84 

20.41 


April 11-20. . 


2 22 


April 21-30 


... 2 . 35 


May 1-10 


70 


May 11-20. . 


.05 


May 21-31 


... 1 . 10 


June 1-10 


97 


June 11-20 . . 


1 05 


June 21-30 


.99 


July 1-10. . . 


.25 


July 11-20. . . . 


1 15 


July 21-31 


.65 


Aug. 1-10 


3 70 


Aug. 11-20 . . 


. . 1 81 


Aug. 21-31 


.47 


Sept. 1-10 


1 32 


Sept. 1 1-20 . . 


. 5.41 


Sept. 21-30 


... 1.05 


Total 


26 44 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 . . . 


. . T 


.41 
.67 
.66 
.94 
2.03 
.65 

1.98 
.29 
.09 

.21 
1.55 
T 

.21 
.07 
2.00 

3.26 

1.28 
2.28 

18.58 


.18 
.35 
.50 

2.48 
.07 
1.57 

.62 
1.62 
.97 

2.50 
.04 
.33 

1.62 
1.00 
1.79 


.40 

.07 

16.11 


1.09 
.43 
.54 

3.78 
3.81 
2.70 

.07 

1.49 

1.36 
.38 
1.49 

2.09 
1.29 
.03 

.55 
.71 
1.36 

23.17 


.97 
.04 

.06 

.17 
.11 
.74 

1.36 
.75 
1.06 

4.10 
.93 
.01 

1.17 
2.79 
.43 

2.72 
2.69 
.94 

21.04 


2.45 
2.15 
3.36 

.15 
.12 
3.37 

2.19 
1.63 
.21 

2.62 
.02 
2.25 


1.11 
T 
.55 

.37 
.86 
.26 

4.23 

.62 

.22 
.43 

.18 

.30 
.72 
4.44 

2.27 
4.94 
1.75 

23.25 


1.07 
.93 
3.86 

1.24 
1.44 
.86 

.64 
1.99 
2.84 


1.18 
.14 

1.12 
2.09 
2.42 

1.41 
.03 

.54 

23.80 


1.18 
1.24 
.41 

1.13 
2.99 
2.15 

3.08 
1.09 
2.69 

3.54 

1.48 
2.47 

.06 
2.97 
.12 

4.61 
2.60 


33.81 


April 11-20 . 


... 3 . 58 


April 21-30 


.45 


May 1-10 


50 


May 11-20 


.46 


May 21-31 


1 08 


June 1-10 


. . 1 85 


June 11-20 


... 3 . 96 


June 21-30 


1 23 


July 1-10 . . 


. . 35 


July 11-20 





July 21-31 


.22 


Aug. 1-10 


69 


Aug. 11-20 


... 1 . 23 


Aug. 21-31 


.17 


Sept. 1-10 


... 1 70 


Sept. 11-20 


.04 


Sept. 21-30 


... 1 . 39 


Total 


... 18.90 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


73 


1.65 
1.14 
.55 

.45 
.86 
.92 

.46 
1.22 
2.04 

T 
.28 
.68 

.74 
3.11 
1.35 

1.05 


.28 

16.78 


1.35 
3.25 
T 

1.40 
1.37 
3.57 

4.31 

1.22 
3.32 

.38 
.70 
1.67 

.17 

.44 
.07 

6.15 
.08 
2.59 

32.04 


.43 
.15 
.23 

1.74 
2.32 
.65 

3.61 
1.11 

.08 

1.41 
2.02 
.62 

3.53 

.49 

1.41 
1.40 
.64 

21.84 


1.31 
.44 
2.47 

.71 
3.04 
.55 

.60 
.43 

.45 

3.09 
.86 
1.11 

.94 
2.11 
1.37 

.35 
1.04 
.12 

20.99 


.72 
1.26 
2.30 

1.46 

1.85 
2.29 

.93 
2.45 

.85 

.07 
.55 
.97 

.05 
1.83 
.99 

T 
1.73 

.24 

20.54 


.62 
2.44 
1.24 

1.94 
2.98 
1.40 

2.00 
1.06 
2.30 

.38 
.44 
1.06 

.50 
2.60 
.75 

1.14 
1.50 
3.74 

28.09 


.48 
.49 
.34 

2.17 
1.36 
1.50 

.07 
5.00 
1.27 

.39 
1.42 
.06 

.87 
4.34 
.07 

3.28 
.62 

.98 

24.71 


.95 
1.13 
.97 

1.02 
1.39 
1.33 

1.52 
1.65 
1.50 

1.31 
.98 
.95 

1.39 
1.50 

.89 

1.81 
1.40 
1.09 

22.78 


April 11-20 . . . 


... 1 . 83 


April 21-30 


.80 


May 1-10 


65 


May 11-20 


.46 


May 21-31 


56 


June 1-10 


1.50 


June 11-20 


57 


June 21-30. . . . 


... 1 . 60 


July 1-10. . . 


1.65 


July 11-20 


. . 2.96 


July 21-31 
Aug. 1-10. . 


.12 
. 3 41 


Aug. 11-20 


.69 


Aug. 21-31. . . 


39 


Sept. 1-10 


.04 


Sept. 11-20 


.26 


Sept. 21-30 


.63 


Total 


... 18.85 







308 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



MOUNT CARROLL, 


Carroll county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


.60 


1.67 


.63 


.37 


.05 


.97 


1.37 


1.20 


.69 


April 11-20 


... 1.67 


1.09 


.07 


.41 


2.12 


.45 


2.59 


.62 


3.25 


April 2 1-30 


... 2.67 


.13 


.62 


1.43 


1.72 


.15 


1.92 


.02 


1.16 


May 1-10. . . 


.63 


.46 


.05 


.47 


.58 


.42 


.77 


.10 


.07 


May 11-20 


.14 


1.56 


1.70 


.46 


.62 


1.65 


1.49 


1.29 


.76 


May 21-31 


... 1 . 54 


2.98 


.49 


.85 


.10 


1.65 


3.69 


.16 


1.00 


June 1-10 


.93 





1.26 


2.31 


1.41 


.41 


1.11 


.68 


.14 


June 11-20 


... 1.11 


.32 


.30 


1.93 


4.09 


7.47 


.04 


2.07 


1.74 


June 21-30 


... 1.00 


.01 


2.60 


2.63 


1.39 


.10 


1.69 


2.34 


1.50 


July 1-10 


.03 


3.08 


1.84 


.60 


1.08 


.79 


.04 


1.15 


.86 


July 11-20 


.91 


.90 


.05 


.56 


.63 


.02 


.04 


1.59 


.42 


July 21-31 


T 


2.02 


.83 


1.94 


.85 


5.27 


.45 


.03 


T 


Aug. 1-10 


1.18 


.78 


1.63 


1.97 


1.41 


1.24 


1.93 


2.66 


2.95 


Aug. 11-20 


... 2.59 


.02 


.99 


5.08 


.98 


3.17 


.14 


.75 


.09 


Aug. 21-31 


.50 


.76 


1.40 


2.47 


T 


2.36 


.08 


2.62 


.12 


Sept. 1-10 




2.62 


1.62 


.71 


.66 


2.89 


4.66 


.19 


1.52 


Sept. 11-20 




.07 


2.12 


1.67 


3.12 


1.96 


3.94 


.76 


.51 


Sept. 21-30 




.03 


.58 


.30 


2.47 


1.84 


1.80 


.07 


1.41 


Total 




18.50 


18.78 


26.16 


23.28 


32.81 


27.75 


18.30 


18.19 




1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 


T 


.20 


.29 


.81 


.73 


.36 


1.00 


1.16 


.70 


April 11-20 


... 4.08 


.88 


.15 


.36 


.05 


1.94 


T 


1.75 


.55 


April 21-30 


.88 


.53 


.92 


.79 


T 


.04 


.53 


1.71 


.63 


May 1-10. . . 


... 1.72 


1.75 


.66 


4.25 


.18 


2.51 


.49 


.95 


1.50 


May 11-20 


.36 


2.16 


.23 


3.92 


.27 


1.05 


.29 


1.32 


2.66 


May 21-31 


... 1.12 


.22 


1.69 


1.72 


.40 


2.22 


.50 


1.31 


1.58 


June 1-10 


. 2.09 


2.28 


2.05 


1.23 


.88 


2.26 


4.35 


.21 


1.63 


June 11-20 


... 4.80 


.45 


2.82 





.22 


1.18 


.30 


3.03 


2.12 


June 21-30 


... 1.24 


1.26 


.38 


1.18 


1.23 


2.32 


.16 


5.33 


3.68 


July 1-10 


.62 


.10 


1.99 


3.19 


2.70 


.80 


T 


.18 


3.80 


July 11-20 


T 


1.29 


.12 


.72 


1.24 


.54 


.83 


.58 


2.30 


July 21-31 


.18 


T 


.16 


2.80 


.07 


3.13 


.31 


.18 


1.97 


Aug. 1-10 


... 4.13 


1.38 


1.49 


1.10 


.92 


1.16 


.23 


.33 


.81 


Aug. 11-20 


T 


.55 


.74 


.66 


.64 


.60 


.78 


2.40 


5.66 


Aug. 21-31 


.21 


.91 


2.64 


.05 


.01 


.15 


3.94 


.04 


.31 


Sept. 1-10 


... 1.24 


1.98 


T 


.51 


2.34 


2.08 


1.96 


.39 


3.65 


Sept. 11-20 


.10 


.46 


.85 


1.00 


2.04 


.23 


3.93 


.04 


2.82 


Sept. 21-30 


... 1.10 


1.27 


.09 


1.56 


1.64 


1.17 


1.45 


.62 





Total 


23.87 


17.67 


17.27 


25.85 


15.56 


23.74 


21.05 


21.53 


36.37 




1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


.39 


1.63 


1.45 


.40 


1.75 


.56 


.54 


.35 


.77 


April 11-20 


... 1.96 


.89 


1.60 


.27 


.23 


1.53 


1.97 


.02 


1.21 


April 21-30 


... 1.88 


.38 


.02 


.53 


2.06 


2.14 


.85 


.41 


.93 


May 1-10. . . 


.76 


.61 


.59 


1.60 


.65 


1.83 


1.74 


1.24 


1.02 


May 11-20 


.15 


.90 


1.22 


2.09 


3.59 


1.48 


3.46 


.96 


1.34 


May 21-31 


.90 


.59 


2.79 


.81 


.97 


3.04 


1.27 


1.31 


1.34 


June 1-10 


1.40 


.03 


3.39 


2.36 


2.31 


1.26 


2.54 


.06 


1.48 


June 11-20 


.99 


2.75 


1.40- 


1.63 


1.27 


3.54 


.92 


4.62 


1.97 


June 21-30 


... 1.74 


3.87 


1.75 


.22 


.33 


2.11 


2.01 


.68 


1.64 


July 1-10 


1.05 


.03 


.38 


.18 


1.79 


.62 


.12 


.01 


1.04 


July 11-20 


... 1.48 


.42 


.25 


1.49 


1.73 


.57 


.26 


.95 


.76 


July 21-31 


.27 


2.18 


2.86 


1.01 


1.12 


1.70 


.83 


.06 


1.16 


Aug. 1-10 


... 2.28 


.64 


.06 


1.75 


2.03 


.06 


.31 


.15 


1.33 


Aug. 11-20 


... 1.42 


1.83 


.93 


.16 


1.26 


1.29 


2.18 


3.56 


1.48 


Aug. 21-31 


.21 


2.17 


.57 


1.31 


1.24 


1.27 


.41 


.13 


1.00 


Sept. 1-10 


.01 


.72 


4.74 


5.49 


1.71 


T 


.63 


2.57 


1.80 


Sept. 11-20 


.35 


.06 


.88 


.91 


.79 


2.03 


.88 


.60 


1.28 


Sept. 21-30 


.36 


.69 


3.01 


.63 


.17 


.18 


3.00 


1.40 


1.07 


Total 


. , . 17.60 


20.39 


27.89 


22.84 


25.00 


25.21 


23.92 


19.08 


22.62 



1949] 

Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



309 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



PAWPAW, Lee 


county 










1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 




32 
19 
93 

09 
34 
73 

41 
T 
66 

T 
,64 
04 

22 
.97 
.49 

13 
36 
57 

,09 


.73 
.27 
.15 

.94 
1.63 
1.82 

.05 
.36 
T 

2.10 

1.80 
.45 

.25 
T 
.10 

3.17 
.39 


14.21 


1 

2, 
1. 
1, 

1 
1 

4, 
1 

20 


78 
26 

17 

11 
,80 
53 

23 
37 
61 

,88 
,22 
14 

34 

,28 
.77 

40 
,52 

,84 

25 


.58 
.13 
.61 

.92 
.57 

.62 

2.29 
1.19 
4.42 

.54 
.29 
2.13 

2.90 
2.81 
.88 

1.07 

2.28 
.37 

24.60 


.11 

1.16 
1.29 

.25 
.76 
.02 

.83 
2.59 
2.23 

.49 
.62 
,40 

.45 
.32 
.10 

1.60 
2.16 
1.42 

16.80 


1.10 
.23 

.48 

.23 
1.35 
1.51 

.03 
3.09 
.41 

1.88 
T 
2.43 

1.31 
2.08 
.22 

2.64 
1.94 
2.97 

23.90 


1.70 
3.23 
1.63 

1.21 
.84 
3.00 

.52 
.47 
1.30 

.75 
.01 
.24 

1.74 
.31 
.52 

.31 
.89 
3.59 

22.26 


1.83 
.70 
.03 

.22 
1.22 
.19 

.28 
3.56 
2.48 

2.15 
2.56 
.44 

1.19 
.52 
1.85 

.94 
1.51 
.01 

21.68 


1.55 
3.51 
1.55 

.15 
1.16 
.44 

.24 
5.10 
.79 

1.67 
.50 
.05 

1.82 
.02 
.06 

1.23 
1.05 
1.15 

22.04 


April 11-20 


. 2, 


April 21-30 . . . 


. . . 2. 


May 1-10 




May 11-20 




May 21-31 


. . . 1 


June 1-10 


.. . 2, 


June 11-20 .... 




June 21-30 




July 1-10 




July 11-20 . . . 




July 21-31 




Aug 1-10 


. . 3 


Aug 11-20 .... 


... 1 


Aug. 21-31 




Sept 1-10 


. . 1 


Sept 11-20 . . . 


... 4 


Sept. 21-30 


... 1 


Total 


... 24 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





,93 
.59 

,29 
.46 
,25 

.95 

.58 
.45 

,88 


,47 

.17 
.59 
.16 

.90 
.02 
.43 

.12 


.37 
.38 
.66 

1.22 
1.50 
1.96 

2.47 
.02 
1.80 

1.76 
1.46 
.10 

1.05 
.41 
.75 

2.37 
1.04 
1.50 

20.82 


2 

1 
1 

1 
1 

1 
14 


.14 
10 
,69 

,41 
,07 
.45 

.96 
.34 
.75 

,97 
.12 
,36 

.30 

.58 
.73 

T 
.44 
T 

.41 


2.06 
.89 

.47 

3.59 
2.25 
2.01 

.03 

2.05 

1.40 
.58 
.16 

1.76 
.30 
T 

.20 
.44 

2.28 

20.47 


1.15 
.14 
.11 

T 
.02 
.43 

.56 
1.56 
2.27 

1.75 
.93 
T 

.50 
.94 
.80 

3.48 
.71 
1.10 

16.45 


.12 
1.63 
.35 

1.78 
1.58 
1.79 

.94 
2.31 
2.22 

1.27 
.11 
.75 

2.30 
2.66 
.08 

1.90 
.05 
2.62 

24.46 


.80 
.10 
.82 

1.37 

1.78 
.16 

.33 
T 

.19 

.31 
.21 
.08 

.14 
2.60 
2.85 

2.34 
5.35 
1.42 

20.85 


1.64 
.78 
3.26 

.84 
.91 
1.29 

.95 
1.71 
3.12 


1.20 

.82 

.11 
1.89 
.31 

1.19 
T 
.32 

20.34 


1.22 
.64 
.15 

.88 
3.37 
1.74 

4.51 
1.16 
5.40 

2.14 

1.45 
.97 

1.06 
.73 
.55 

2.94 
4.98 


33.89 


April 11-20 


... 3 


April 21-30 




May 1-10 . . . 




May 11-20 




May 21-31 




June 1-10 




June 11-20 




June 21-30 


. . 1 


July 1-10 




July 11-20 




July 21-31 . 




Aug. 1-10 


1 


Aug. 11-20 


... 3 


Aug 21-31 




Sept. 1-10 .... 


2 


Sept. 11-20 




Sept 21-30 .... 


... 3 


Total 


... 21 







1939 



1940 



1941 



1942 



1943 



1944 



1945 



1946 Aver. 



April 1-10 . . . 


. . . 1, 


04 


1.69 


.87 


.31 


1 


66 


.50 


.83 


.32 


.90 


April 11-20 


. . . 2. 


36 


1.22 


2.46 


.44 




60 


1.12 


1.89 


.23 


1.18 


April 21-30 




5? 


.24 


.03 


.08 


2 


23 


2.12 


1.36 


.26 


.88 


May 1-10 


. . . 2, 


36 


1.21 


1.19 


2.11 


1 


22 


1.58 


3.12 


2.12 


1.21 


May 11-20 




75 


1.33 


2.30 


1.70 


4, 


64 


1.58 


3.08 


1.74 


1.49 


May 21-31 




87 


1.68 


1.10 


.27 




67 


.78 


.51 


1.28 


1.04 


June 1-10 


. . . 2, 


47 


.64 


.80 


2.76 




,38 


.98 


1.79 


T 


1.17 


June 11-20. . . . 




6"i 


1.76 


1.09 


1.65 


1 


98 


2.12 


.65 


3.33 


1.52 


June 21-30 


. . . 2. 


IP 


1.45 


.87 


.03 




27 


.09 


3.02 


.69 


1.61 


July 1-10. . . 




69 


T 


.43 


.75 




.13 


.04 


.02 




1.00 


July 11-20 


1 


1? 


.54 


.29 


.74 


1 


14 


.08 


.28 




.68 


July 21-31 




10 


.64 


1.13 


3.76 




72 


1.54 


.09 




.72 


Aug. 1-10 


... 3 


11 


.23 


1.39 


2.91 




.73 





.26 




1.29 


Aug 11-20 




9q 


3.38 


1.10 


T 


1 


38 


1.23 


2.28 




1.27 


Aug. 21-31 




47 


3.11 


.08 


.90 




,78 


1.16 


1.32 




.80 


Sept 1-10 







.56 


4.88 


2.40 




.29 


.22 






1.76 


Sept. 11-20 . . . 




36 


.05 


.18 


.32 


1 


,08 


2.23 






1.43 


Sept. 21-30 




64 


.07 


2.76 


1.53 




,22 


.36 






1.26 


Total 


... 19 


PP 


19.80 


22.95 


22.66 


20 


,12 


17.73 






21.21 



























310 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



PONTIAC, 


Livingston county 


1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 




'.29 
.15 

.12 
.02 
.23 

.64 
.73 
.55 

.22 

.43 
.80 

35 

.17 
.63 

.01 
.52 
.89 

.88 


1.51 
1.92 
.76 

.47 
1.35 
1.61 
.02 ' 
.91 
.05 

.56 
1.79 
.12 

.45 
.28 
1.00 

1.03 
.29 


14.12 


.51 
.03 
.33 

.06 
4.44 
1.20 

.30 
.14 
1.42 

.06 

.40 

1.40 
.28 
1.24 

1.33 
.46 
.56 

14.16 


.13 
.80 
1.97 

.75 
.51 

.75 

2.07 
.45 
4.24 

.61 
1.51 
.65 

2.50 
1.43 
.61 

1.53 

.88 
1.15 

22.54 


1 

1 

1 
1 

10 


.29 

.22 
95 

.08 

,47 
01 

.13 

.88 
57 

.75 
.22 
36 

30 
.15 


.28 
.29 
88 

83 


.84 
1.13 
1.15 

.62 
.40 

2.28 

.01 
2.86 
.32 

.69 
.73 
4.36 

3.10 
1.92 
.31 

5.49 
1.13 
4.33 

31.67 


2.19. 
3.72 
1.51 

.79 
2.86 
2.18 

1.85 
1.08 
.04 

2.80 
.74 
.37 

.63 
.79 
.60 

.61 
.15 
5.57 

28.48 


1.43 
.91 
.37 

.23 
1.00 
.34 

.48 
1.00 
1.85 

1.73 
.24 

1.17 

.34 
.69 
.69 

.21 
.70 
.19 

13.57 


1.68 

1.87 
.97 

.87 
1.82 
.72 

.44 
2.82 
1.70 

3.00 
.08 
.30 

1.80 
.09 
.02 

.25 
.38 
.70 

19.51 


April 11-20 


. 2 


April 21-30 


... 2 


May 1-10 




May 11-20 




May 21-31 


... 1 


June 1-10 


. 1 


June 11-20 




June 21-30 




July 1-10 


. . 1 


July 11-20 .... 




July 21-31 




Aug 1-10 


. . 1 


Aug 11-20 


... 1 


Aug 21-31 




Sept 1-10 


. 1 


Sept 11-20 


... 4 


Sept 21-30 .... 


... 1 


Total 


... 21 






1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 .... 





.84 
.43 

.20 
.82 
.16 

.90 
.32 
.19 

.32 

.16 

56 
24 
.23 


.68 
.23 

,28 


1.39 
.66 

.88 

1.51 

2.24 
.80 

1.42 
.06 
1.34 

2.51 
1.67 
.09 

2.64 
.97 
.61 

.74 
2.14 
.94 

22.61 


.20 
.12 

.75 

1.73 
.13 

.76 

.87 
.71 
1.03 

2.14 

.45 

3.17 
.33 
.11 

.18 
1.01 
.82 

14.51 


2.56 
1.37 
.61 

2.70 
4.24 
.53 

.85 
1.18 
2.09 

.55 
.28 
.05 

2.03 
.24 
.23 

.57 
.64 
6.69 

27.41 


2 

2 

4 

I. 

15 


.76 
.38 
27 

.07 
13 
25 

,58 
37 
70 

,12 
15 
06 

,86 
62 

,28 

07 

23 
27 

,17 


.80 
1.33 
.72 

5.36 
.63 
1.24 

1.74 
.71 
1.95 

2.74 
.49 
.05 

1.28 

1.09 


:g 

1.08 

1.26 
.36 
.08 

.25 

.06 

.25 
.68 
.49 

.40 

.48 
2.78 

.52 
3.59 
3.11 

16.29 


1.61 

.87 
2.72 

1.25 
.95 
1.68 

1.17 
1.76 
1.73 

T 
1.26 

.18 

.61 
.42 
.17 

.37 
T 
.25 

17.00 


1.68 
.87 
.25 

.30 
3.12 
1.74 

2.20 
.42 
2.17 

1.40 
.45 
3.42 

.42 
1.19 
.83 

.64 

2.85 


23.95 


April 11-20 


... 3 


April 21-30 




May 1-10 ... 




May 11-20 




May 21-31 




June 1-10 




June 11-20 


. 2 


June 21-30 


. 1 


July 1-10 




July 11-20 




July 21-31 




Aug 1-10 .... 




Aug. 11-20 


... 1 


Aug 21-31 




Sept 1-10 .... 




Sept. 11-20 




Sept 21-30 




Total 


... 13 







1939 



1940 



1941 



1942 



1943 



1944 



1945 



1946 Aver. 



April 1-10 


. . 1 


76 


1 


33 


1.33 


3.21 


.57 


1.56 


1.06 


.44 


1.14 


April 11-20 . . . 


... 2 


3P 




73 


1.83 


.20 


1.00 


2.98 


2.18 


.55 


1.32 


April 21-30 




65 


1 


39 


T 


.12 


4.75 


4.36 


1.08 


1.04 


1.20 


May 1-10 




80 


1 


1? 


1.39 


1.68 


3.09 


1.12 


2.38 


3.59 


1.29 


May 11-20 




13 


1 


05 


1.46 


2.07 


5.10 


.65 


2.70 


.86 


1.52 


May 21-31 




81 


1 


65 


.75 


.06 


.41 


4.01 


.39 


1.08 


1.03 


June 1-10 


... 3 


57 




5? 


1.51 


3.64 


1.54 


.50 


.21 


.15 


1.07 


June 11-20 




46 


1 


?0 


1.31 


.69 


1.14 


1.94 


1.68 


6.77 


1.36 


June 21-30 


... 2 


5? 




39 


.63 


.27 


T 


.31 


.52 


.46 


1.05 


July 1-10. . . 


. 2 


00 




n 


1.12 


1.93 


.63 





.75 


2.84 


1.14 


July 11-20 


. 2, 


16 




?6 


.74 


1.04 


.24 


.49 


.04 


.30 


.70 


July 21-31 




94 




T 


.92 


.48 


.52 


1.20 


.11 


.83 


.78 


Aug. 1-10 


1 


15 


1 


?6 


.07 


1.64 


6.64 





1.02 


.32 


1.45 


Aug. 11-20 




4? 


3 


?6 


1.42 


T 


.02 


2.03 


.31 


1.14 


.94 


Aug 21-31 




56 




49 


.74 


3.96 


.31 


2.15 


.21 


.03 


.72 


Sept. 1-10 . 




01 




50 


1.43 


.78 


1.60 


.03 


.60 


.56 


1.02 


Sept 11-20 




OT 




T 


.06 


.68 


.69 


1 92 


1 93 


.11 


1.01 


Sept. 21-30 




16 




31 


1.84 


1.41 


.01 


1.24 


4.57 


.28 


1.52 


Total 


... 20. 


7? 


15 


46 


18.55 


23.86 


28.26 


26.49 


21.74 


21.35 


20.26 



























1949] 
Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



311 



-NORTHERN ILLINOIS : Precipitation During Growing Season 
(Continued) 



ROCKFORD, Winnebago county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


1 27 


.47 
2.26 
.08 

.55 
1.24 
1.89 

.09 
.25 
T 

2.60 
1.11 
1.57 

.21 
T 


1.34 
.16 
T 

13.82 


.70 
.27 

.41 

.03 
1.26 
T 

2.75 
.49 
1.52 

.67 
.47 
.53 

1.36 
.93 
1.79 

1.55 
1.19 
.70 

16.62 


.42 
.36 
1.74 

.19 
.48 
.80 

2.13 
1.14 
3.52 

.64 
T 
1.44 

3.25 
2.52 
.92 

.81 
.97 
.38 

21.71 


T 

.97 
1.70 

.64 
.78 
.03 

.56 
1.60 
1.05 

2.12 
1.18 
.98 

2.75 

.45 


1.27 
2.14 
2.50 

20.72 


.30 
1.00 
1.01 

.65 
9.32 
.67 

3.27 
T 
3.63 

.73 
1.34 
.90 

2.34 
1.60 
1.67 


1.94 
3.41 
1.77 

.47 
.74 
3.57 

.71 
.06 
1.11 

.17 
.57 
T 

.74 
.46 
T 

1.29 

3.87 
2.43 

23.31 


2.45 
.94 
T 

.05 
.93 
.24 

.50 
2.66 
3.34 

1.04 
1.29 
.02 

2.00 
1.07 
1.51 

.15 
1.38 
T 

19.57 


1.48 
3.22 
1.50 

.10 
1.49 
1.11 

T 

2.82 
2.18 

.81 
.36 
1.60 

.84 
.46 
.30 

1.97 
1.00 
2.00 

23.24 


April 11-20 


... 1 16 


April 21-30 


... 3 . 86 


May 1-10 


13 


May 11-20 


.08 


May 21-31 


... 1.13 


June 1-10 


.64 


June 11-20 


... 1 . 86 


June 21-30 


86 


July 1-10. . 


.04 


July 11-20 


.63 


July 21-31 


.05 


Aug. 1-10. . . . 


... 1 . 28 


Aug. 11-20 


... 2.61 


Aug 21-31. . . 


.32 


Sept. 1-10 


.94 


Sept 1 1-20 


3 34 


Sept 21-30 


. . 1 . 99 


Total 


... 22.19 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 


T 


.18 
.62 
1.09 

1.78 
1.75 
.13 

1.56 
.01 
2.00 

.47 
3.61 
.02 

1.37 
.13 
1.28 

.97 
1.55 
2.02 

20.54 


.27 
.05 
.90 

1.17 
.13 
.93 

.93 
1.62 
.46 

2.39 

T 

.33 
.84 
1.34 

1.06 

.87 
.12 

13.41 


.85 
.34 
.90 

3.95 
2.73 
2.20 

.02 

2.32 

3.69 

1.75 
.86 

1.32 
.06 
T 

.41 
1.50 
1.15 

24.05 


1.60 
T 
T 

.03 
.20 

.45 

.43 
.65 

1.41 

2.44 

.88 
.08 

1.71 
.37 
.46 

1.88 
1.07 
1.51 

15.17 


T 
1.84 
.37 

1.80 
1.15 
3.00 

1.29 
3.30 
2.18 

5.17 
.40 
.76 

3.49 
2.49 
.25 

1.94 
.44 
.31 

30.18 


1.17 
.13 
.45 

.22 
.60 

.24 

3.55 

.15 
.12 

T 
.26 

.40 

.84 
2.92 
6.97 

1.92 

4.41 
1.53 

25.88 


1.17 
.74 
2.11 

.86 
.87 
1.52 

.13 
3.99 
2.28 

.04 
.01 
T 

.25 
2.52 
.94 

1.09 
1.10 
.32 

19.94 


.56 
.91 

.24 

.87 
1.85 
1.64 

2.24 
1.16 
2.49 

2.79 
1.86 
.75 

1.33 
1.65 
2.56 

4.51 
3.05 
T 

30.54 


April 11-20 


. . 2 . 64 


April 21-30 


.55 


May 1-10 


.79 


May 11-20 . . 


.41 


May 21-31 


... 1.27 


June 1-10 


1.59 


June 11-20. . . . 


... 1.73 


June 21-30 


.99 


July 1-10 


1.47 


July 11-20 


.59 


July 21-31 


.64 


Aug 1-10 


.74 


Aug. 11-20 


.16 


Aug. 21-31 


.18 


Sept 1-10 . 


. 3.23 


Sept. 11-20 


.19 


Sept 21-30 


1.19 


Total. 


... 18 . 36 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


37 


1.62 
1.18 

.85 

1.00 
.89 
2.15 

.60 
4.61 
4.26 


1.10 
3.46 

.32 
4.13 
3.50 

.19 

.18 

30.04 


.79 
1.90 
.06 

.85 
1.31 
1.95 

2.32 

1.78 
1.98 

.29 
.80 
2.14 

.72 
2.36 
.25 

6.85 
.35 
3.06 

29.76 


.50 
.48 
.08 

1.58 
1.34 
1.76 

1.75 
2.54 
.09 

1.70 
1.57 
.73 

6.45 
.09 
1.34 

3.75 
1.79 
.50 

28.04 


1.45 
1.08 
1.69 

.95 
2.69 
2.08 

.98 
.57 
1.25 

2.39 
1.85 
.76 

1.87 
2.72 
2.29 

.80 
.54 
.27 

26.23 


.64 
1.65 
1.71 

1.15 
1.86 
2.19 

1.19 
1.95 
1.60 

.60 
1.04 
2.15 

.20 
2.02 
3.38 


2.37 
.25 

25.95 


.63 
2.48 
1.22 

2.10 
3.48 
2.09 

1.55 
.50 
3.55 

.10 
.05 
2.01 

.18 
1.60 
1.63 

2.38 
1.10 
5.10 

31.75 


.56 

.35 

.80 
.35 
2.04 

.25 
.05 
.05 

2.25 
.05 



.84 
1.21 
.98 

.91 
1.14 
1.46 
1.22 
1.81 
1.67 

1.37 

.89 
.95 

1.48 
1.32 
1.24 

1.73 
1.45 
1.19 

22.86 


April 1 1-20 


... 1.55 


April 21-30 


.91 


May 1-10 


. . 1.41 


May 11-20 


.12 


May 21-31 


2 53 


June 1-10 


. 2.34 


June 11-20 


39 


June 21-30. 


.59 


July 1-10 


43 


July 11-20 


. . 1 . 82 


July 21-31. 


.04 


Aug. 1-10 


1.89 


Aug. 11-20 
Aug 21-31 . . 


36 
.12 


Sept. 1-10 


.64 


Sept. 11-20 


.33 


Sept. 21-30. ... 


.68 


Total 


16.52 







312 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS : Precipitation During Growing Season 
(Continued) 



SYCAMORE, DeKalb county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 . . . 


.62 


.49 
1.63 
.12 

.56 
.79 
2.43 

.10 
.21 
.01 

2.49 
1.50 
2.22 

.62 

.11 

2.85 
.62 


16.75 


.76 
.32 
.54 

.10 
1.34 
.03 

' 3.11 
.49 
1.02 

.77 
.56 
.69 

1.51 
1.71 
1.76 

2.46 
1.17 
.41 

18.75 


.46 
.24 
1.21 

1.14 
.27 
.72 

1.86 
1.22 
4.41 

.54 

3.21 

5.19 

2.28 
.37 

.80 
1.34 
.41 

25.67 


.01 
.95 
1.32 

.84 
1.01 
.07 

1.20 
2.92 
1.16 

1.09 
.98 
1.94 

.51 
1.70 


.91 
2.53 
1.38 
20.52 


1.38 
.01 
.70 

.45 
1.07 

.48 

.37 
4.85 
.50 

2.30 
.01 
2.60 

2.76 
1.60 
1.75 

2.35 
1.94 
2.88 

28.00 


1.19 
3.41 
1.66 

1.09 
.73 
3.27 

1.04 
.09 
1.92 

.22 
.05 
.02 

1.06 
.32 

.26 

.20 
2.60 
3.51 

22.64 


2.41 

.77 
.01 

.17 
.78 
.56 

.52 
2.44 
3.14 

1.40 
3.24 
.51 

1.08 
.62 
3.79 

.35 
1.79 
.01 

23.59 


.30 
2.90 
1.69 

.08 
1.48 
1.43 

.06 
4.64 
.96 

1.21 
1.59 
1.51 

1.25 
.29 
.29 

.60 
.01 
2.59 

22.88 


April 11-20 


... 2.16 


April 21-30 


. . 2 68 


May 1-10 


.02 


May 11-20 


.22 


May 21-31 


.99 


June 1-10 


.70 


June 11-20 


.73 


June 21-30 


. . 2.42 


July 1-10 


.47 


July 11-20 


.20 


July 21-31 


.09 


Aug. 1-10 


1.50 


Aug. 11-20 


. 2.85 


Aug 21-31 


.17 


Sept 1-10 


1.89 


Sept 1 1-20 


3 05 


Sept 21-30 


... 1 . 07 


Total 


... 21.83 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





.41 
.05 
1.04 

.77 
1.86 
1.74 

1.53 
.16 

2.87 

2.62 
.81 


1.46 
.07 
1.43 

1.92 
.59 
1.53 

20.86 


.01 


.78 

2.18 
.10 
1.11 

3.79 
.52 

.88 

2.56 

.12 

.98 
.27 
2.27 

.64 
1.83 
.10 

18.14 


1.01 
.83 
1.12 

2.95 
2.49 
1.37 

.51 
T 
3.12 

2.98 

.10 

1.08 
.83 
.04 

.27 
1.01 
1.20 

20.91 


1.27 
.04 
.06 

.02 
.01 
.56 

.62 
.46 

.98 

2.13 
.79 


1.72 
1.13 
.53 

2.53 
1.02 
2.00 

15.87 


.95 
.87 
.20 

1.79 
1.36 
2.38 

.87 
2.11 
2.12 

1.01 

.02 
1.26 

.72 
1.19 
.27 

1.66 
.03 
1.61 

20.42 


.64 

.55 

.72 
1.31 
.12 

2.00 
.12 

.57 


.26 
.21 

.48 
5.84 
4.62 

1.96 
6.95 
1.38 

27.73 


1.12 
1.45 
1.90 

.76 
1.15 
1.63 

.21 
4.18 
1.89 

T 
.67 
.74 

1.21 

2.84 
.39 

2.19 

1.70 
.20 

24.23 


.68 
.94 
.17 

.93 
3.73 
1.40 

3.72 
.27 
3.53 

1.07 
1.33 
1.44 

1.31 
1.88 
1.03 

2.16 
2.57 


28.16 


April 11-20 . 


. 4.08 


April 21-30 


.21 


May 1-10 


1.07 


May 11-20 


.37 


May 21-31 


.45 


June 1-10 


1.19 


June 11-20 


.75 


June 21-30 


... 1 . 20 


July 1-10 


49 


July 11-20 


.42 


Jnly 21-31 


.34 


Aug. 1-10 


.67 


Aug. 11-20 


.97 


Aug 21-31 


01 


Sept. 1-10 . 


. . 2 90 


Sept. 11-20 


.04 


Sept. 21-30 


... 3.10 


Total 


... 18 . 26 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


77 


1.10 
1.73 
.14 

1.36 
1.05 
2.02 

.16 
2.50 
1.62 

.33 
.51 
1.19 

.33 
5.11 
3.59 

.43 

.13 

23.30 


.59 
1.82 
.04 

.96 
2.88 
4.00 

.89 
.46 
.64 

.59 
.92 
2.28 

1.08 
.57 
.76 

5.84 
.09 
2.66 

27.07 


.24 
.24 
.05 

2.08 
1.90 
.38 

1.55 
3.42 
.15 

.86 
.38 
1.13 

6.27 

.64 

2.45 
.94 
.40 

23.08 


1.05 
.26 
1.83 

1.16 
3.82 
.95 

2.04 
.87 
.65 

.95 
3.49 
.59 

.94 
1.16 
3.15 

.30 
1.32 
.15 

24.68 


.47 
.90 
1.80 

.82 
1.38 
2.64 

1.15 
1.26 
1.21 

.04 
.38 
1.12 


1.33 
1.70 


2.19 
.38 

18.77 


.73 
2.75 
1.42 

2.20 
3.99 
1.14 

1.43 

.86 
2.78 

.09 
.43 
1.33 

.67 
1.51 
1.17 

3.55 
1.50 
4.33 

31.88 


.46 

T 
.44 

1.11 
.94 
1.44 

.04 
3.95 

.80 

.23 

.13 

1.51 
1.04 


.18 

.97 

13.24 


.74 
1.14 

.84 

1.06 
1.41 
1.32 

1.25 
1.57 
1.63 

1.03 
.76 

.97 

1.48 
1.43 
1.17 

1.61 
1.42 
1.27 
22.10 


April 11-20 . . . 


... 2.21 


April 21-30 


.24 


May 1-10 


... 2 . 25 


May 11-20 


.53 


May 21-31 


. . 1 10 


June 1-10 


1.80 


June 11-20. . . 


... 1 34 


June 21-30 


... 1.91 


July 1-10 


33 


July 11-20 


... 1.13 


July 21-31 


.48 


Aug. 1-10 


. 2.64 


Aug. 11-20 


.16 


Aug. 21-31 


33 


Sept. 1-10 
Sept. 11-20 


.43 
22 


Sept. 21-30 


.68 


Total 


18 55 







1949] 

Table 12. 



CLIMATE OF ILLINOIS: APPENDIX C 



313 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Continued) 



TISKILWA, Bureau county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


.15 


1.49 
.63 

.55 

.27 
.73 
1.59 

.02 
.86 

.18 

.32 
2.83 
.37 

.86 
.01 

.75 

2.96 
.30 


14.72 


.36 
.19 
.93 

.08 
2.45 
1.92 

.87 
1.01 
3.03 

.83 
T 
.07 

1.58 
.11 
.45 

1.89 
.73 
1.66 

18.16 


.38 
.39 
1.66 

.49 
.43 
1.16 

2.87 
.53 
5.05 

1.01 
.97 
2.09 

2.78 
6.08 
1.48 

1.08 
2.07 
.59 

31.11 


.57 
.94 
1.96 

.15 
1.28 
.01 

1.09 
3.30 
.54 

1.35 
.90 

,48 

.41 
.80 
T 

.65 
2.94 
1.74 

19.11 


1.14 
1.16 
1.29 

.60 
.73 
2.23 

.66 
3.80 
.64 

2.09 
.15 
3.61 

2.24 
1.32 
.37 

4.24 
1.95 
3.19 

31.41 


2.78 
2.72 
1.16 

2.18 
1.70 
1.80 

2.50 
.83 
. .96 

.21 
.18 
.58 

.82 
1.10 
.68 

2.73 
1.49 

2.48 

26.90 


1.97 
.77 
.04 

.10 
.92 
.34 

.73 
2.08 
2.67 

1.86 

1.88 
.90 

1.12 
.02 
1.21 

.16 
1.07 
.25 

18.09 


2.43 
3.20 
1.79 

T 
1.09 
.69 

.37 
1.89 
.55 

8.48 
.49 
.52 

2.11 
T 
.49 

.08 
.28 
1.37 

25.83 


April 11-20 


... 2.94 


April 21-30 . . . 


... 2.76 


May 1-10 


.04 


May 11-20 


. . .78 


May 21-31 


... 2.81 


June 1-10 


. 2.35 


June 11-20. . . . 


.03 


June 21-30 


.40 


July 1-10 


. . 65 


July 11-20 


.84 


July 21-31 


.27 


Aug 1-10 


. . 3.67 


Aug. 11-20 


.83 


Aug. 21-31 


... 1.47 


Sept 1-10 


. 2.82 


Sept 11-20 . . . 


... 4.27 


Sept. 21-30 


... 1.67 


Total . . 


28.75 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10 





.52 
.55 
.90 

1.62 

1.75 
1.55 

1.87 
.24 
.13 

.71 
.99 

.79 

1.55 

.72 
1.52 

2.47 
.92 
2.04 

20.84 


.08 
.51 
.47 

2.61 
.15 
.67 

.57 
1.58 
.60 

2.81 

.04 

3.26 
.71 
1.06 

.03 
1.60 
.10 

16.85 


1.48 
1.00 
.69 

2.95 
2.44 
1.33 

.91 

1.38 

2.52 
.34 

.18 

2.29 
.06 
.22 

T 
.42 
2.59 

20.80 


.88 
.10 
.10 

.04 
.02 
.96 

1.39 
.42 
1.86 

.30 
2.76 
T 

.96 
2.18 
.33 

4.42 
1.74 
.94 

19.40 


.44 
.92 
.23 

3.31 

1.32 
1.90 

1.30 
2.13 
2.40 

2.37 
.68 
1.38 

2.25 
1.11 
.07 

1.44 

1.70 

24.95 


.93 
.04 

.75 

1.51 

.78 
.16 

.34 
T 
.20 

.07 
.47 
.18 

1.06 
.43 

2.28 

1.74 
3.94 
2.73 

17.61 


1.83 
.79 
2.42 

1.87 
.93 

.82 

1.09 
1.71 
.14 


2.26 
.68 

.08 
2.91 
1.32 

.46 
.16 
.32 

19.79 


3.14 
.69 

.18 

.99 
3.23 
.68 

2.87 
.53 
1.85 

1.88 
.96 
2.41 

.14 
.31 
.65 

.46 
.96 


21.93 


April 11-20 


... 3.29 


April 21-30 . . . 


.82 


May 1-10 


.22 


May 11-20 


. 1.47 


May 21-31 


.22 


June 1-10 


.85 


June 11-20 


.41 


June 21-30 


... 1 . 10 


July 1-10. . . 


.37 


July 11-20 





July 21-31 


.05 


Aug 1-10 


. . .98 


Aug. 11-20 


.30 


Aug. 21-31 


.03 


Sept 1-10 


.. 1.24 


Sept. 11-20 


.14 


Sept. 21-30 


2.91 


Total . . . , 


. . . 14.40 








1939 


1940 


1941 


1942 


1943 


1944 


1945 


1946 


Aver. 


April 1-10 


1 31 


.96 

1.29 
.35 

1.19 
.67 
1.45 

.02 
1.77 
1.18 

.01 
.42 

.68 

.30 
2.22 
2.91 

.80 

.13 

16.35 


1.63 
2.11 
.05 

.85 
1.83 
1.63 

2.65 
1.22 
1.76 

.38 
.50 
1.21 

.15 
1.99 
T 

4.08 
.11 
2.04 

24.19 


1.37 
.33 
.14 

2.17 
1.49 
.38 

1.37 
.95 
.12 

2.19 
3.11 
1.39 

4.21 

2.18 

2.47 
.35 

.48 

24.70 


.70 
.46 
4.59 

1.41 
5.10 
.32 

.98 
1.46 
.59 

.30 
.16 
.46 

2.75 
1.50 
1.65 

.40 
1.32 
.04 

24.19 


.35 

2.40 
2.64 

1.30 
.56 
4.42 

.90 
1.42 
1.75 




.78 


.52 

1.77 

.47 
1.92 
.68 

21.88 


1.00 
2.11 
1.47 

3.16 
3.23 
.56 

1.46 
.56 
1.19 



.12 

.84 

1.43 
1.17 

.88 

1.77 
2.03 
4.05 

27.03 


.26 
T 
.40 

2.24 
1.11 

.83 

.05 
6.24 
T 

.35 
.26 
.40 

.52 
1.63 
.05 

1.08 
.08 
.90 

16.40 


1.08 
1.21 
1.10 

1.31 
1.42 
1.25 

1.28 
1.37 
1.25 

1.33 

.85 
.80 

1.58 
1.11 
.94 

1.54 
1.20 
1.34 

21.96 


April 11-20 . . 


1.85 


April 21-30 


... .28 


May 1-10 


. 2.65 


May 11-20. . . . 


.66 


May 21-31. . . 


. . 1 . 99 


June 1-10 


. 3.33 


June 11-20 


.60 


June 21-30. 


... 2 . 29 


July 1-10 


. 3.47 


July 11-20. . . . 


92 


July 21-31. ... 


55 


Aug. 1-10 


. 3.46 


Aug 11-20 


.87 


Aug. 21-31. . . . 


53 


Sept 1-10 





Sept. 11-20 


28 


Sept. 21-30 


23 


Total 


, . . . 25.27 







314 
Table 12. 



BULLETIN NO. 532 



[April, 



-NORTHERN ILLINOIS: Precipitation During Growing Season 
(Concluded) 



WALNUT, Bureau county 




1921 


1922 


1923 


1924 


1925 


1926 


1927 


1928 


1929 


April 1-10 


.28 


1.39 
1.01 
.12 

.47 
.59 
2.71 

.01 
.63 
.07 

3.12 
1.72 
.26 

.75 
T 
1.33 

2.60 
.19 
T 

16.97 


.78 
.05 
.58 

.08 
1.85 
1.27 

1.31 

1.87 
1.86 

.85 
.18 
.11 

.78 
.29 
.44 

1.00 
.74 
1.48 

15.52 


.23 
.14 
1.16 

.57 
.30 
.39 

2.76 
.69 
3.99 

1.02 
.18 
2.42 

2.56 
2.84 
1.25 

1.58 
.96 

.74 

23.78 


.19 
1.50 
1.91 

.15 
.89 
.02 

.84 
3.10 
1.12 

.50 
.36 
1.02 

.67 
.91 
.21 

1.72 
3.11 
1.92 

20.14 


1.22 
.85 
.50 

.28 
.57 
1.20 

T 
3.13 
.20 

.98 
.09 
3.20 

2.40 
2.92 
1.07 

6.98 
4.01 
J.84 

31.44 


2.03 
2.16 
1.65 

1.67 
.93 
2.20 

2.89 
.57 

.44 

.39 
.03 

.85 

2.25 
1.20 
.45 

1.93 
1.13 
2.10 

24.87 


2.21 
.74 
.01 

.11 
1.17 
.66 

.49 
2.28 
1.96 

2.21 

2.19 
.68 

1.45 
.33 
1.63 

.42 
1.76 
T 

20.30 


1.18 
3.48 
1.58 

.01 
1.56 
1.32 

.20 
4.49 
.15 

3.90 
1.08 
T 

2.46 
.04 
.11 

'1.83 
1.48 
1.30 

26.17 


April 11-20 


2 37 


April 21-30 


... 2 . 54 


May 1-10 


.06 


May 11-20 


.36 


May 21-31 . . . 


... 1.61 


June 1-10 


1.53 


June 11-20 


.46 


June 21-30 


.80 


July 1-10 


T 


July 11-20 


1.21 


July 21-31 


.07 


Aug 1-10 . 


. 5.63 


Aug. 11-20 


... 2.37 


Aug 21-31 


.50 


Sept 1-10 


1.81 


Sept. 11-20 


... 6.01 


Sept. 21-30 


... 1.40 


Total . 


. 29.01 








1930 


1931 


1932 


1933 


1934 


1935 


1936 


1937 


1938 


April 1-10